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NO. 0193E
SPECIFICATIONS AND PARTS ARE SUBJECT TO CHANGE FOR IMPROVEMENT
ROOM AIR CONDITIONERINDOOR UNIT + OUTDOOR UNIT
DECEMBER 2003 Refrigeration & Air-Conditioning Division
SERVICE MANUAL
PM
REFER TO THE FOUNDATION MANUALTECHNICAL INFORMATION
FOR SERVICE PERSONNEL ONLY
(W)
(A)
(kW)
(B.T.U./h)
(W)
(A)
(kW)
(B.T.U./h)
W
H
D
(kg)
(WALL TYPE)TYPE
MODEL
POWER SOURCE
TOTAL INPUT
TOTAL AMPERES
CAPACITY
TOTAL INPUT
TOTAL AMPERES
CAPACITY
DIMENSIONS(mm)
NET WEIGHT
SPECIFICATIONS
CONTENTS
SPECIFICATIONS ----------------------------------------------------- 5
HOW TO USE ---------------------------------------------------------- 6
CONSTRUCTION AND DIMENSIONAL DIAGRAM ------- 29
MAIN PARTS COMPONENT ------------------------------------- 31
WIRING DIAGRAM -------------------------------------------------- 33
CIRCUIT DIAGRAM ------------------------------------------------- 35
PRINTED WIRING BOARD LOCATION DIAGRAM ------- 37
BLOCK DIAGRAM --------------------------------------------------- 39
BASIC MODE --------------------------------------------------------- 41
REFRIGERATING CYCLE DIAGRAM ------------------------- 47
DESCRIPTION OF MAIN CIRCUIT OPERATION --------- 49
AUTO SWING FUNCTION ---------------------------------------- 53
SERVICE CALL Q & A -------------------------------------------- 54
PARTS LIST AND DIAGRAM ------------------------------------ 63
RAS-07GH4 / RAC-07GH4RAS-09GH4 / RAC-09GH4RAS-14GH4 / RAC-14GH4
COOLING
HEATING
INDOOR UNIT
RAS-07GH4
780
280
210
9.0
After installation
RAS-07GH4RAS-09GH4RAS-14GH4
RAC-14GH4
RAC-07GH4RAC-09GH4
OUTDOOR UNIT
RAC-07GH4
INDOOR UNIT
RAS-09GH4
OUTDOOR UNIT
RAC-09GH4
INDOOR UNIT
RAS-14GH4
OUTDOOR UNIT
RAC-14GH4
700
570
210
32
750
570
280
38
780
280
210
9.0
700
570
210
32
780
280
210
9.0
1 PHASE, 50 Hz, 220-230-240V
590-610-630
2.80-2.80-2.80
2.10
7,160
490-510-530
2.30-2.30-2.30
2.20
7,500
1 PHASE, 50 Hz, 220-230-240V
890-900-950
4.20-4.10-4.10
2.90
9,900
740-770-810
3.50-3.50-3.50
3.00
10,230
1 PHASE, 50 Hz, 220-230-240V
1060-1090-1120
5.00-5.00-4.90
3.50
11,940
960-1000-1050
4.60-4.60-4.60
3.85
13,140
– 1 –
SAFETY DURING REPAIR WORK
1. In order to disassemble and repairthe unit in question, be sure todisconnect the power cord plugfrom the power outlet before startingthe work.
2. If it is necessary to replace any parts, they should be replaced with respective genuine parts for the unit, andthe replacement must be effected in correct manner according to the instructions in the Service Manual ofthe unit.
If the contacts of electrical partsare defective, replace theelectrical parts without trying torepair them.
3. After completion of repairs, the initial stateshould be restored.
4. Lead wires should be connected and laid asin the initial state.
5. Modification of the unit by user himself shouldabsolutely be prohibited.
6. Tools and measuring instruments for use in repairs or inspection should be accurately calibrated in advance.
7. In installing the unit having been repaired, be careful to prevent the occurence of any accident such aselectrical shock, leak of current, or bodily injury due to the drop of any part.
8. To check the insulation of the unit, measure the insulation resistance between the power cord plug andgrounding terminal of the unit. The insulation resistance should be 1MΩ or more as measured by a 500V DCmegger.
9. The initial location of installation such as window, floor or the other should be checked for being and safeenough to support the repaired unit again.If it is found not so strong and safe, the unit should be installed at the initial location reinforced or at a newlocation.
10. Any inflammable thing should neverbe placed about the location ofinstallation.
11. Check the grounding to see whetherit is proper or not, and if it is foundimproper, connect the groundingterminal to the earth.
DANGER
First, I must disconnect
the power cord plug
from the power outlet.
– 2 –
WORKING STANDARDS FOR PREVENTING BREAKAGE OF SEMICONDUCTORS
1. ScopeThe standards provide for items to be generally observed in carrying and handling semiconductors in relativemanufacturers during maintenance and handling thereof. (They apply the same to handling of abnormalgoods such as rejected goods being returned).
2. Object parts
(1) Micro computer(2) Integrated circuits (IC)(3) Field-effect transistors (FET)(4) P.C. boards or the like on which the parts mentioned in (1) and (2) of this paragraph are equipped.
3. Items to be observed in handling
(1) Use a conductive container for carrying and storing of parts. (Even rejected goods should be handled inthe same way).
Fig. 1. Conductive Container
(2) When any part is handled uncovered (in counting, packing and the like), the handling person must alwaysuse himself as a body earth. (Make yourself a body earth by passing one M ohm earth resistance througha ring or bracelet).
(3) Be careful not to touch the parts with your clothing when you hold a part even if a body earth is beingtaken.
(4) Be sure to place a part on a metal plate with grounding.
(5) Be careful not to fail to turn off power when you repair the printed circuit board. At the same time,try to repair the printed circuit board on a grounded metal plate.
1M
Fig. 2. Body Earth
Body earth(Elimik conductive band)
Clip for connection with agrounding wire
IC
A conductive polyvinyl bag IC
Conductive sponge
– 3 –
(6) Use a three wire type soldering iron including a grounding wire.
Bare copper wire (for body earth)
Workingtable
Resistor of 1 M (1/2W)
Earth wire
Fig. 3. Grounding of the working table
Screw stop at the screwedpart using a rag plate
Soldering iron
Groundingwire
Fig. 4. Grounding a soldering iron
Use a high insulation mode (100V, 10M or higher) when ordinary iron is to be used.
(7) In checking circuits for maintenance, inspection or some others, be careful not to have the test probes of themeasuring instrument shortcircuit a load circuit or the like.
Metal plate (of aluminium, stainless steel, etc.)
Staple
– 4 –
1. In quiet or stopping operation, slight flowing noise of refrigerant in the refrigerating cycle is heard occasionally,but this noise is not abnormal for the operation.
2. When it thunders near by, it is recommended to stop the operation and to disconnect the power cord plugfrom the power outlet for safety.
3. In the event of power failure, the airconditioner will restart automatically in the previously selected modeonce the power is restored. In the event of power failure during TIMER operation, the timer will be resetand the unit will begin or stop operating under a new timer setting.
4. If the room air conditioner is stopped by adjusting thermostat, or missoperation, and re-start in a moment,there is occasion that the cooling and heating operation does not start for 3 minutes, it is not abnormaland this is the result of the operation of IC delay circuit. This IC delay circuit ensures that there is nodanger of blowing fuse or damaging parts even if operation is restarted accidentally.
5. This room air conditioner should not be used at the cooling operation when the outside temperature isbelow 10°C (50°F).
6. This room air conditioner (the reverse cycle) should not be used when the outside temperature is below–10°C (14°F).If the reverse cycle is used under this condition, the outside heat exchanger is frosted and efficiency falls.
7. When the outside heat exchanger is frosted, the frost is melted by operating the hot gas system, it is nottrouble that at this time fan stops and the vapour may rise from the outside heat exchanger.
! CAUTION
– 5 –
SPECIFICATIONS
MODEL
FAN MOTOR
FAN MOTOR CAPACITOR
FAN MOTOR PROTECTOR
COMPRESSOR
COMPRESSOR MOTOR CAPACITOR
OVERLOAD PROTECTOR
OVERHEAT PROTECTOR
FUSE (for MICROPROCESSOR)
POWER RELAY
POWER SWITCH
TEMPORARY SWITCH
SERVICE SWITCH
TRANSFORMER
VARISTOR
FUSE CAPACITY (TIME DELAY FUSE)
THERMOSTAT
REMOTE CONTROL SWITCH (LIQUID CRYSTAL)
RAS-07GH4RAS-09GH4RAS-14GH4
20 W
NO
NO
–
NO
NO
NO
3.15A
G4A
YES
YES
YES
NO
450NR
---------
YES(IC)
YES
---------
---------
20 W 30 W
1.5μF, 450 VAC 2.5μF, 450VAC
NO
20μF, 450 VAC 25μF, 450 VAC
YES
NO
NO
NO
NO
NO
NO
NO
NO
10 A 15 A
NO
NO
1050g
10m
UNIT
MAX. PIPES
REFRIGERANT CHARGINGVOLUME(Refrigerant 410A)
RAC-07GH4 RAC-14GH4RAC-09GH4
5RS080 5RS132
650g600g
5RS112
15m
WITHOUT REFRIGERANT BECAUSE COUPLING IS FLARE TYPE
– 6 –
MODEL RAS-07GH4 / RAC-07GH4 and RAS-09GH4 / RAC-09GH4
Figure showing the installation of Indoor anf Outdoor unit
The installation height of indoor unit must be 2.3m or more in a non public area
CAUTION
!
above 50mm
above 100mmab
ove
0.45
m
abov
e 30
0mm
mus
t not
ben
d
above 100mm
2,300mm or more
12
Max
imum
pip
e le
ngth
10m
Min
imum
pip
e le
ngth
5m
Plug
above 100mm
❈ above 300mmabove 200mm
❈ above 100mm
❈ give clearanceas wide as possible
above 50mm wheninstalled on theceiling of balcony
above 200mm ● The difference in heightbetween the indoor andoutdoor unit should be keptmax 5m.
● The connecting pipe, nomatter big or small, shouldall be insulated withinsulation pipe and thenwrapped with vinyl tape.(The insulator willdeteriorate if it is notwrapped with tape).
The connection of insulateddrain hose.
Please use insulated drainhose for the indoor piping(commercial product).
The indoor piping should beinsulated with the enclosedinsulation pipe. (If the insulatoris insufficient, please usecommersial products).
inner diameter ø 16mm
– 5a –
– 7 –
MODEL RAS-14GH4 / RAC-14GH4
Figure showing the installation of Indoor anf Outdoor unit
The installation height of indoor unit must be 2.3m or more in a non public area
CAUTION
!
above 50mm
above 100mm
abov
e 0.
45m
abov
e 30
0mm
mus
t not
ben
d
above 100mm
2,300mm or more
12
Max
imum
pip
e le
ngth
15m
Min
imum
pip
e le
ngth
5m
above 200mm
above 700mm
above 200mm
above 50mm wheninstalled on theceiling of balcony( )
above 100mm
above 100mm
give clearance aswide as possible
Plug
● The difference in heightbetween the indoor andoutdoor unit should be keptmax 5m.
● The connecting pipe, nomatter big or small, shouldall be insulated withinsulation pipe and thenwrapped with vinyl tape. (Theinsulator will deteriorate if itis not wrapped with tape).
The connection of insulateddrain hose.
Please use insulated drainhose for the indoor piping(commercial product).
The indoor piping should beinsulated with the enclosedinsulation pipe. (If the insulatoris insufficient, please usecommersial products).
inner diameter ø 16mm
– 5b –
– 6 –
!
SAFETY PRECAUTION● Please read the “Safety Precaution” carefully before operating the unit to ensure correct usage of the unit.● Pay special attention to signs of “ Warning” and “ Caution”. The “Warning” section contains matters which,
if not observed strictly, may cause death or serious injury. The “Caution” section contains matters which mayresult in serious consequences if not observed properly. Please observe all instructions strictly to ensure safety.
● The sign indicate the following meanings.
● Please keep this manual after reading.
WARNING
PRECAUTIONS DURING INSTALLATION● Do not reconstruct the unit.
Water leakage, fault, short circuit or fire may occur if you reconstructthe unit by yourself.
● Please ask your sales agent or qualified technician for the installationof your unit. Water leakage, short circuit or fire may occur if you installthe unit by yourself.
● Please use earth line.Do not place the earth line near water or gas pipes, lightning-conductor,or the earth line of telephone. Improper installation of earth line maycause electric shock.
● A circuit breaker should be installed depending on the mounting site ofthe unit. Without a circuit breaker, the danger of electric shock exists.
● Do not install the unit near a location where there is flammable gas.The outdoor unit may catch fire if flammable gas leaks around it.
● Please ensure smooth flow of water when installing the drain hose.
CAUTION
!
!
PRECAUTIONS DURING SHIFTING OR MAINTENANCE
PRECAUTIONS DURING OPERATION
● Avoid an extended period of direct air flow for your health.
WARNING
!
● Should abnormal situation arises (like burning smell), please stop operating the unitand turn off the circuit breaker. Contact your agent. Fault, short circuit or fire mayoccur if you continue to operate the unit under abnormal situation.
● Please contact your agent for maintenance. Improper self maintenance may causeelectric shock and fire.
● Please contact your agent if you need to remove and reinstall the unit. Electricshock or fire may occur if you remove and reinstall the unit yourself improperly.
● Do not insert a finger, a rod or other objects into the air outlet or inlet. As thefan is rotating at a high speed, it will cause injury. Before cleaning, be sureto stop the operation and turn the breaker OFF.
● During thunder storm, disconnect and turn off the circuit breaker.
● Do not use any conductor as fuse wire, this could cause fatal accident.
!
Make sure to connect earth line.
Indicates the instructions that must be followed.
The sign in the figure indicates prohibition.
WARNING
!
– 7 –
PRECAUTIONS DURING OPERATION
● Do not attempt to operate the unit with wet hands, this could cause fatalaccident.
● When operating the unit with burning equipments, regularly ventilate theroom to avoid oxygen insufficiency.
● Do not direct the cool air coming out from the air-conditioner panel to facehousehold heating apparatus as this may affect the working of apparatussuch as the electric kettle, oven etc.
● Do not place plants directly under the air flow as it is bad for the plants.
● Please ensure that outdoor mounting frame is always stable, firm andwithout defect. If not, the outdoor unit may collapse and cause danger.
● Do not splash or direct water to the body of the unit when cleaning it as thismay cause short circuit.
● When operating the unit with the door and windows opened, (the room humidity is always above80%) and with the air deflector facing down or moving automatically for a long period of time,water will condense on the air deflector and drips down occasionally. This will wet your furniture.Therefore, do not operate under such condition for a long time.
● If the amount of heat in the room is above the cooling or heating capability of the unit (forexample: more people entering the room, using heating equipments and etc.), the preset roomtemperature cannot be achieved.
● Do not climb on the outdoor unit or put objects on it.
● Please switch off the unit and turn off the circuit breaker during cleaning, thehigh-speed fan inside the unit may cause danger.
● Turn off the circuit breaker if the unit is not to be operated for a long period.
CAUTION
!
● The product shall be operated under the manufacturer specification andnot for any other intended use.
● Do not put water container (like vase) on the indoor unit to avoid waterdripping into the unit. Dripping water will damage the insulator inside the unitand causes short-circuit.
● Do not use any aerosol or hair sprays near the indoor unit. This chemicalcan adhere on heat exchanger fin and blocked the evaporation water flowto drain pan. The water will drop on tangential fan and cause water splashingout from indoor unit.
– 8 –
INDOOR UNIT
NAMES AND FUNCTIONS OF EACH PART
Air filterTo prevent dust from coming into the indoor unit.(Refer page 25)
Front panel
Indoor unit indicatorsLight indicator showing the operating condition.(Refer page 9)
Horizontal deflector ● Vertical deflector(Air Outlet)(Refer page 20)
Remote controllerSend out operation signal to the indoor unit. So as tooperate the whole unit.(Refer page 10)
OUTDOOR UNIT
Drain pipeCondensed water drain to outside.
Connecting cord and insulation pipe for piping
Air inlet (Back, Left side)
Air outlet
Drain pipeCondensed water drain to outside.
Connecting cord and insulation pipe for piping
Air inlet (Back and Left side)
Air outlet
WIDTH (mm)
780
700
750
MODEL
RAS-07GH4/09GH4/14GH4
RAC-07GH4/09GH4
RAC-14GH4
HEIGHT (mm)
280
570
570
DEPTH (mm)
210
210
280
MODEL NAME AND DIMENSIONS
CAUTION• When heating operation, drain or defrosted water flows
out from outdoor unit. Don’t close drain outlet portion in chilly area so as not to freeze these.
!
RAC-07GH4RAC-09GH4
RAC-14GH4
– 9 –
INDOOR UNIT INDICATORS
TEMPORARY SWITCH
Use this switch to start and stop when the remote controller does not work. [Use non-conductor stick(example toothpick)]
● By pressing the temporary switch, the operation is done in previously set operation mode.
● When the operation is done using the temporary switch after the power source is turned off and turn onagain, the operation is done in automatic mode.
OPERATION INDICATOR
FILTER LAMPWhen the device is operated for a total of about 100hours, the FILTER lamp lights to indicate that it is timeto clean the filter. The lamp goes out when the POWERSWITCH set to OFF and ON again.
OPERATION LAMPThis lamp lights during operation.The OPERATION LAMP flashes in the following casesduring heating.(1) During preheating
For about 2–3 minutes after starting up.(2) During defrosting
Defrosting will be performed about once every onehour when frost forms on the heat exchanger of theoutdoor unit, for 5–10 minutes each time.
TIMER LAMPThis lamp lights when the timer is working.
TEMPORARYSWITCH
TEMPORARYSWITCH
Press
Temporary Switch
Non-conductor Stick
– 10 –
AUTO
HEAT
DEHUMIDIFY
COOL
FAN
FAN SPEEDLOWMEDHI
SLEEPING
STOP (CANCEL)
START (RESERVE)
START/STOP
TIME
TIMER SET
TIMER SELECTOR ON TIMER OFF TIMER
AUTO SWING
˚CH
RESET
˚CH
NAMES AND FUNCTIONS OF REMOTE CONTROL UNIT
REMOTE CONTROLLER● This controls the operation of the indoor unit. The range of control is about 7 meters. If indoor lighting is
controlled electronically, the range of control may be shorter.This unit can be fixed on a wall using the fixture provided. Before fixing it, make sure the indoor unit canbe controlled from the remote controller.
● Handle the remote controller with care. Dropping it or getting it wet may compromise its signal transmissioncapability.
● After new batteries are inserted into the remote controller, the unit will initially require approximately 10seconds to respond to commands and operate.
● Signal emitting window/transmission signPoint this window toward the indoor unit when controlling it.The transmission sign blinks when a signal is sent.
● DisplayThis indicates the room temperature selected, current time, timer status, functionand intensity of circulation selected.
● START/STOP buttonPress this button to start operation. Press it again to stop operation.
● SLEEP buttonUse this button to set the sleep timer.
● TEMPERATURE buttonsUse these buttons to raise or lower the temperature setting. (Keep pressed, andthe value will change more quickly.)
● TIME buttonUse this button to set and check the time and date.
● RESET buttons● FUNCTION selector
Use this button to select the operating mode. Every time you press it,the mode will change from (AUTO) to (HEAT) to (DEHUMIDIFY) to
(COOL) and to (FAN) cyclically.● FAN SPEED selector
This determines the fan speed. Every time you press this button, the intensityof circulation will change from (AUTO) to (HI) to (MED) to (LOW)(during the (FAN) mode, from HI to MED to LOW).
● AUTO SWING buttonControls the angle of the horizontal air deflector.
● TIMER controlUse this button to set the timer.
● OFF-TIMER button Select the turn OFF time.● ON-TIMER button Select the turn ON time.● RESERVE button Time setting reservation.● CANCEL button Cancel time reservation.
Precautions for Use● Do not put the remote controller in the following places.
● Under direct sunlight.● In the vicinity of a heater.
● Handle the remote controller carefully. Do not drop it on the floor,and protect it from water.
● Once the outdoor unit stops, it will not restart for about 3 minutes(unless you turn the power switch off and on or unplug the powercord and plug it in again).This is to protect the device and does not indicate a failure.
● If you press the FUNCTION selector button during operation, thedevice may stop for about 3 minutes for protection.
– 11 –
AUTOMATIC OPERATION
The device will automatically determine the mode of operation, HEAT, COOL or DEHUMIDIFY depending onthe initial room temperature. The selected mode of operation will not change when the room temperaturevaries.
■ As the settings are stored in memory in the remote controller, you only haveto press the (START/STOP) button next time.
Press the FUNCTION selector so that the display indicates the (AUTO)mode of operation.
● When AUTO has been selected, the device will automatically determinethe mode of operation, HEAT, COOL or DEHUMIDIFY depending onthe initial room temperature.
Press the (START/STOP) button.Operation starts with a beep.Press the button again to stop operation.
You can raise or lower the temperature setting as necessary by maximum of3°C.
Press the temperature button and the temperature settingwill change by 1°C each time.
● The preset temperature and the actual room temperature may varysomewhat depending on conditions.
● The display does not indicate the preset temperature in the AUTO mode.If you change the setting, the indoor unit will produce a beep.
1
STARTSTOP
°C
RESET
Over 27°C COOL
23~27°C
Under 23°C HEAT
Temperature settingFunction
27°C
23°C
Slightly lower than theroom temperature LOW
FAN SPEED
HI at start, MED or LOWafter the preset temperatureis reached
HI at start, MED or LOWafter the preset temperatureis reached
--
DEHUMIDIFY
-
Initial room temperature(approx.)
■ Condition of Automatic Operation
– 12 –
HEATING OPERATION
● Use the device for heating when the outdoor temperature is under 21°C.When it is too warm (over 24°C), the heating function may not work in order to protect the device.
● In order to keep reliability of the device, please use this device above –10°C of the outdoor temperature.
Press the FUNCTION selector so that the display indicates (HEAT).
Set the desired FAN SPEED with the (FAN SPEED) button(the display indicates the setting).
(AUTO): The fan speed is HI at first and varies to MEDautomatically when the preset temperature hasbeen reached.
(HI) : Economical as the room will become warmquickly.But you may feel a chill at the beginning.
(MED) : Quiet.
(LOW) : More quiet.
Set the desired room temperature with the TEMPERATUREbuttons (the display indicates the setting).
The range of 18-22°C is recommended as theroom temperature for heating.If the temperature setting is 20°C, the roomtemperature will be controlled at around 20°C.
The temperature setting and the actual room temperature mayvary somewhat depending on conditions.
Press the (START/STOP) button. Heating operation startswith a beep. Press the button again to stop operation.
■ As the settings are stored in memory in the remote controller, you onlyhave to press the (START/STOP) button next time.
1
2
3
STARTSTOP
˚C
RESET
˚C
– 13 –
RESET
˚C
˚C
DEHUMIDIFYING OPERATION
Use the device for dehumidifying when the room temperature is over 16°C.When it is under 15°C, the dehumidifying function will not work.
■ Dehumidifying Function
When the room temperature is higher than the temperature setting: The device will dehumidify the room,reducing the room temperature to the preset level.When the room temperature is lower than the temperature setting: Dehumidifying will be performed atthe temperature setting slightly lower than the current room temperature, regardless of the temperaturesetting. The function will stop (the indoor unit will stop emitting air) as soon as the room temperaturebecomes lower than the setting temperature.
Set the desired room temperature with the TEMPERATUREbutton (the display indicates the setting).
The range of 20-26˚C is recommended asthe room temperature for dehumidifying.
Press the (START/STOP) button. Dehumidifying operationstarts with a beep. Press the button again to stop operation.
2
■ As the settings are stored in memory in the remote controller, youonly have to press the (START/STOP) button next time.
STARTSTOP
Press the FUNCTION selector so that the display indicates(DEHUMIDIFY).
The FAN SPEED is set at LOW automatically.The FAN SPEED button does not work.
1
– 14 –
˚C
RESET
˚C
COOLING OPERATION
Use the device for cooling when the outdoor temperature is 22-42°C.If indoor humidity is very high (over 80%), some dew may form on the air outlet grille of the indoor unit.
Press the FUNCTION selector so that the display indicates (COOL).
Set the desired FAN SPEED with the (FAN SPEED) button(the display indicates the setting).
(AUTO): The FAN SPEED is HI at first and varies toMED automatically when the preset temperaturehas been reached.
(HI) : Economical as the room will become coolquickly.
(MED) : Quiet.
(LOW) : More quiet.
Set the desired room temperature with the TEMPERATUREbutton (the display indicates the setting).
The range of 25-28°C is recommended as theroom temperature for cooling.If the temperature setting is 27°C, the roomtemperature will be controlled at around 27°C.
The temperature setting and the actual room temperature mayvary some how depending on conditions.
Press the (START/STOP) button. Cooling operation startswith a beep. Press the button again to stop operation. Thecooling function does not start if the temperature setting ishigher than the current room temperature (even though the (OPERATION) lamp lights). The cooling function will start assoon as you set the temperature below the current roomtemperature.
■ As the settings are stored in memory in the remote controller, youonly have to press the (START/STOP) button next time.
1
2
3
STARTSTOP
– 15 –
FAN SPEED (AUTO) ..... When the AUTO fan speed mode is set in the cooling/heating operation:
For the heating operation
● The fan speed will automatically change according to the temperatureof discharged air.
● When the difference of room temperature and setting temperature islarge, fan starts to run at HI speed.
● When the room temperature reaches setting temperature, fan speedchanges to LOW automatically.
● When the difference of room temperature and setting temperature islarge, fan starts to run at HI speed.
● After room temperature reaches the preset temperature, the coolingoperation, which changes the fan speed and room temperature to obtainoptimum conditions for natural healthful cooling will be performed.
For the cooling operation
FAN OPERATION
You can use the device simply as an air circulator. Use this function to dry the interior of the indoorunit at the end of summer.
Press the FUNCTION selector so that the display indicates (FAN).
Press the (FAN SPEED) button.
Press the (START/STOP) button. Fan operation starts witha beep. Press the button again to stop operation.
12
STARTSTOP
RESET
– 16 –
HOW TO SET THE TIMER
ON/OFF-Timer
● The device will turn on (off) and off(on) at the designated times.
● The switching occurs first at thepreset time that comes earlier.
● The arrow mark appearing on thedisplay indicates the sequence ofswitching operations.
1 Press the (ON-OFF)button so that the (OFF)mark blinks.
OFF-Timer
You can set the device to turn offat the present time.
After you change thebatteries;
How to Cancel Reservation
Point the signal window of the remote controller toward the indoor unit, and press the (CANCEL)button.The (RESERVED) sign goes out with a beep and the (TIMER) lamp turns off on the indoor unit.
1 Set the current month andday with the TIMER controlbutton.
1 Press the (OFF-TIMER)button. The (OFF) mark blinkson the display.
1 Press the (ON-TIMER)button the (ON) mark blinkson the display.
2 Set the turn-off timewith the TIMER controlbutton.Press the (RESERVE)button.
3 Press the (ON-TIMER) button so that the (OFF) mark lights andthe (ON) mark blinks.
NOTEYou can set only one of the OFF-timer,ON-timer and ON/OFF-timer.
ON-Timer
Time, Day, Month
● The device will turn onat the designated times.
TIME, DAY,MONTH(current time,day, month)
OFF TIMER
ON TIMER
RESERVE
CANCEL
M DM D
AMSTOPStart
AM
StartStop
PM
Start Stop
PM
AM
PM
RESET
– 17 –
3 Point the signal window of the remote controller toward the indoor unit, andpress the (RESERVE) button.The (OFF) mark starts lighting instead of flashing and the sign (RESERVED)lights. A beep occurs and the (TIMER) lamp lights on the indoor unit.
● The time indication will disappearautomatically in 10 second.
● To check the current time setting,press the (TIME) button twice.
The setting of the current time isnow complete.
● The timer may be used in three ways: off-timer, on-timer, and ON/OFF (OFF/ON)-timer. Setthe current time at first because it serves as a reference.
● As the time settings are stored in memory in the remote controller, you only have to pressthe (RESERVE) button in order to use the same settings next time.
2 Press the(TIME) button.
3 Set the current time with theTIMER control button.
Example: The current time is 1:30 p.m.
2 Set the turn-off time with theTIMER control button.
The setting of turn-off time is now complete.
Example: The device will turn off at 11:00p.m.
Example:The device will automatically turn on earlier so that the presettemperature can be reached at 7:00 a.m.The setting of the turn-on time is now complete.
4 Set the turn-on time with theTIMER control button.
5 Point the signal window of the remote controller toward the indoor unit, andpress the (RESERVE) button.The (ON) mark starts lighting instead of flashing and the (RESERVED) signlights. A beep occurs and the (TIMER) lamp lights on the indoor unit.
3 Point the signal window of the remote controller toward the indoor unit, andpress the (RESERVE) button.The (ON) mark starts lighting instead of flashing and the (RESERVED) signlights. A beep occurs and the (TIMER) lamp lights on the indoor unit.
2 Set the turn-on time with theTIMER control button.
Example:The device will turn off at 10:30 p.m. and then automaticallyturn on earlier so that the preset temperature can be reachedat 7:00 a.m.The settings of the turn-on/off times are now complete.
4 Press the (TIME) button again.The time indication starts lightinginstead of flashing.
PM PMAM
PM
PM
PM
AMAM
AMAM
PM
PM
– 18 –
HOW TO SET THE SLEEP TIMER
1 Set the ON-timer.
Set the current time at first if it is not set before (see the pages for settingthe current time). Press the (SLEEP) button, and the display changes asshown below.
Mode
Sleep timer
Indication
1 hour 2 hours 3 hours 7 hoursSleep timer off
4 4 44
1
Sleep Timer: The device will continue working for the designatednumber of hours and then turn off.Point the signal window of the remote controller toward the indoorunit, and press the SLEEP button.The timer information will be displayed on the remote controller.The TIMER lamp lights with a beep from the indoor unit. When thesleep timer has been set, the display indicates the turn-off time.
Example: If you set 3 hours sleeptime at 11:38 p.m., the turn-offtime is 2:38 a.m.
2 Press the (SLEEP) button and set the sleep timer.
The device will be turned off by the sleeptimer and turned on by on-timer.
How to Cancel Reservation
Point the signal window of the remote controller toward the indoor unit, and press the (CANCEL)button.The (RESERVED) sign goes out with a beep and the (TIMER) lamp turns off on the indoor unit.
Example:
In this case, the device will turn offin 2 hours (at 1:38 a.m.) and turnon early so that the presettemperature will be almost reachedat 6:00 next morning.
SLEEP
H
HAM
AM
Sleeptimer
Start
H
– 19 –
Cooling
“ ”
and
dehumidifying
“ ”
Explanation of the sleep timer
The device will control the FAN SPEED and room temperature automaticallyso as to be quiet and good for people’s health.You can set the sleep timer to turn off after 1, 2, 3 or 7 hours. The FANSPEED and room temperature will be controlled as shown below.
Function Operation
The settings of room temperature and circulation are varied.
The room temperature will becontrolled 2°C above thetemperature and the FANSPEED will be set to LOWsetting 60 minutes after thesetting of the sleep timer.
Fan
“ ”
Heating
“ ”
The room temperature will becontrolled 5°C below thetemperature and the FANSPEED will be set to LOWsetting 60 minutes after thesetting of the sleep timer.
Operation with the sleep timer
● If date or current time is not set, sleep timer can not be set.● If you set the sleep timer after the off-, on/off- or off/on-timer has been set, the sleep timer
becomes effective instead of the off-, on/off- or off/on-timer set earlier.● You can not set other timer during sleep timer operation.● After sleep timer time is up and when press sleep button again, the sleep timer will be set as
last setting.● Sleep timer effective only once.
NOTE
Sleeptimer set
60 minutes later 3 hours later
7 hours later2 hourslater
6 hourslater
2°C
– 20 –
ADJUSTING THE AIR DEFLECTOR
1
2 Adjustment of the conditioned air to the left and right.
Hold the vertical air deflector as shown in the figure and adjustthe conditioned air to the left and right.
● If the “ (AUTO SWING)” button is pressed once,the horizontal air deflector swings up and down. If thebutton is pressed again, the deflector stops in its currentposition. Several seconds (about 6 seconds) may berequired before the deflector starts to move.
● Use the horizontal air deflector within the adjusting rangeshown on the right.
● When the operation is stopped, the horizontal air deflectormoves and stops at the position where the air outletcloses.
Vertical
Vertical
about 15
about 60
about 45
about 30
When cooling,dehumidifying
When heating
! CAUTION
● In “Cooling” operation, do not keep the horizontal airdeflector swinging for a long time. Some dew may formon the horizontal air deflector and dew may drop.
RESET
Adjustment of the conditioned air in the upward and downwarddirections.
The horizontal air deflector is automatically set to the properangle suitable for each operation. The deflector can be swungup and down continuously and also set to the desired angleusing the “ (AUTO SWING)” button.
! CAUTION
When operating the unit in cooling operation with the air deflector facing down and movingautomatically for a long period of time, water will condensed on the air deflector and drips downoccasionally. This will wet your furniture.
– 21 –
HOW TO EXCHANGE THE BATTERIES IN THE REMOTE CONTROLLER
1 Remove the cover as shown in the figure and take out theold batteries.
=
2 Install the new batteries.The direction of the batteries should match the marks in thecase.
1. Do not use new and old batteries, or different kinds of batteriestogether.
2. Take out the batteries when you do not use the remote controllerfor 2 or 3 months.
CAUTION!
Push and pull to thedirection of arrow
– 22 –
Suitable Room Temperature Install curtain or blinds
Ventilation Effective Usage Of Timer
Do Not Forget To Clean The Air Filter Please Adjust Suitable TemperatureFor Baby And Children
WarningFreezing temperatureis bad for health and awaste of electric power.
! It is possible toreduce heatentering theroom throughwindows.
At night, please use the “OFF or ON timeroperation mode”, together with your wake uptime in the morning. This will enable you toenjoy a comfortable room temperature. Pleaseuse the timer effectively.
Dusty air filter will reduce the air volume andthe cooling efficiency. To prevent from wastingelectric energy, please clean the filter every 2weeks.
Please pay attention to the room temperatureand air flow direction when operating the unitfor baby, children and old folks who havedifficulty in movement.
CautionDo not close the room for a long period oftime. Occasionally open the door and windowsto allow theentrance offresh air.
!
THE IDEAL WAYS OF OPERATION
– 23 –
FOR USER’S INFORMATION
The Air Conditioner And The Heat Source In The Room
Not Operating For A Long Time
When Lightning Occurs
CautionIf the amount of heat in the room is above the coolingcapability of the air conditioner (for example: morepeople entering the room, using heating equipmentsand etc.), the preset room temperature cannot beachieved.
!
When the indoor unit is not to be used for a longperiod of time, please switch off the power from themains. If the power from mains remains “ON”, theindoor unit still consumes about 8W in the operationcontrol circuit even if it is in “OFF” mode.
WarningTo protect the whole unit during lightning, pleasestop operating the unit and remove the plug from thesocket.
!
OFF
Interference From Electrical Products
CautionTo avoid noise interference, please place the indoorunit and its remote controller at least 1m away fromelectrical products.
! Inverter-type fluorescentlamp.
To preventinterference,place at least1m away.
TV
– 24 –
ATTACHING THE AIR CLEANSING AND DEODORIZING FILTERS
1 Open the front panel.● Pull up the front panel by holding it at both
sides with both hands.
2 Remove the filter.● Push upward to release the claws and pull out
the filter.
3 Attaching the air cleansing and deodorizingfilters to the filter.● Attach the air cleansing and deodorizing filters
to the frame by gently compress its both sidesand release after insertion into filter frame.
4 Attach the filters.● Attach the filters by ensuring that the surface
written “FRONT” is facing front.● After attaching the filters, push the front panel
at three arrow portion as shown in figure andclose it.
Cleaning and maintenance must be carried out only by qualified service personal. Before cleaning,stop operation and switch off the power supply.
CAUTION!
! CAUTIONDo not bend the air cleansingand deodorizing filter as it maycause damage to the structure.
NOTE
● In case of removing the air cleansing and deodorizing filters, please follow the above procedures.● The cooling capacity is slightly weakened and the cooling speed becomes slower when the air cleansing
and deodorizing filters are used. So, set the fan speed to "HIGH" when using it in this condition.● Air cleansing and deodorizing filters are washable and reusable up to 20 times by using vacuum
cleaner or water rinse under running tap water. Type number for this air cleansing filter is<SPX-CFH11>. Please use this number for ordering when you want to renew it.
● Do not operate the air conditioner without filter. Dust may enter the air conditioner and fault may occur.
– 25 –
MAINTENANCE
Cleaning and maintenance must be carried out only by qualified service personal. Before cleaning,stop operation and switch off the power supply.
1. AIR FILTER
Clean the air filter, as it removes dust inside the room. In case the air filter is full of dust, the air flowwill decrease and the cooling capacity will be reduced. Further, noise may occur. Be sure to clean thefilter following the procedure below.
! CAUTION
1 Open the front panel and remove the filter● Gently lift and remove the air cleansing and
deodorizing filter from the air filter frame.
2 Vacuum dust from the air filter and air cleansingand deodorizing filter using vacuum cleaner. Ifthere is too much dust, rinse under running tapwater and gently brush it with soft bristle brush.Allow filters to dry in shade.
3 ● Re-insert the air cleansing and deodorizingfilter to the filter frame. Set the filter with“FRONT” mark facing front, and slot them intothe original state.
● After attaching the filters, push the front panelat three arrow portions as shown in figureand close it.
! CAUTION
● Do not wash with hot water at more than 40°C. The filter may shrink.
● When washing it, shake off moisture completely and dry it in the shade; do not expose it directly tothe sun. The filter may shrink.
● Do not use detergent on the air cleansing and deodorizing filter as some detergent may deterioratethe filter electrostatic performance.
PROCEDURE
NOTE:● Air cleansing and deodorizing filter should be cleaned every month or sooner if noticeable loading
occurs. When used overtime, it may loose its deodorizing function. For maximum performance, it isrecommended to replace it every 3-6 months depending on application requirements.
– 26 –
3. MAINTENANCE AT BEGINNING OF LONG OFF PERIOD
● Run the unit by setting the operation mode to(FAN) and the fan speed to HI for about half a dayon a fine day, and dry the whole of the unit.
● Switch off the power plug. AirBlow
2. Washable Front Panel
● Remove the front panel and wash with cleanwater.Wash it with a soft sponge.After using neutral detergent, wash thoroughlywith clean water.
● When front panel is not removed, wipe it witha soft dry cloth. Wipe the remote controllerthoroughly with a soft dry cloth.
● Wipe the water thoroughly.If water remains at indicators or signalreceiver of indoor unit, it causes trouble.
Method of removing the front panel.Be sure to hold the front panel with both handsto detach and attach it.
! CAUTION
● Do not splash or direct water to the body of the unit when cleaningit as this may cause short circuit.
● Never use hot water (above 40°C), benzine, gasoline, acid, thinner ora brush, because they will damage the plastic surface and the coating.
Removing the Front Panel
● When the front panel is fully opened withboth hands, push the right arm to the insideto release it, and while closing the front panelslightly, put it out forward.
Attaching the Front Panel
● Move the projections of the left and rightarms into the Flanges in the unit andsecurely insert them into the holes.
Projection
Flange
Hole
– 27 –
Cleaning and maintenance must be carried out only by qualified service personal. Before cleaning,stop operation and switch off the power supply.
! CAUTION
Confirm
CAUTION
● Please use earth line.Do not place the earth line near water or gas pipes, lightning-conductor, or the earthline of telephone. Improper installation of earth line may cause electric shock.
!
● A circuit breaker should be installed depending on the mounting site of the unit. Without a circuitbreaker, the danger of electric shock exists.
IMPORTANTThe wires in this mains lead are coloured in accordance with the following code:
Green-and-yellow : EarthBlue : NeutralBrown : Live
As the colours of the wires in the mains lead of this appliance may not correspond with the colouredmarkings identifying the terminals in your plug, proceed as follows:The wire which is coloured green-and-yellow must be connected to the terminal in the plug which ismarked with the letter E or by the earth symbol or coloured green or green-and-yellow.The wire which is coloured blue must be connected to the terminal which is marked with the letter Nor coloured black.The wire which is coloured brown must be connected to the terminal which is marked with the letterL or coloured red.
NOTEIf the supply cord is damaged, it must be replaced by the special cord obtainable at authorized service/parts centers.
1
2
3
REGULAR INSPECTION
PLEASE CHECK THE FOLLOWING POINTS BY QUALIFIED SERVICE PERSONAL EITHEREVERY HALF YEARLY OR YEARLY. CONTACT YOUR SALES AGENT OR SERVICE SHOP.
Is the earth line disconnected or broken?
Is the mounting frame seriously affected by rust and is theoutdoor unit tilted or unstable?
Is the plug of power line firmly plugged into the socket?(Please ensure no loose contact between them).
– 28 –
Please note:On switching on the equipment, particularly when the room light is dimmed, a slight brightness fluctuationmay occur. This is of no consequence.The conditions of the local Power Supply Companies are to be observed.
AFTER SALE SERVICE AND WARRANTY
WHEN ASKING FOR SERVICE, CHECK THE FOLLOWING POINTS.
When it does not operate
● Is the fuse all right?● Is the voltage extremely high or low?● Is the circuit breaker “ON”?
● Was the air filter cleaned?● Does sunlight fall directly on the outdoor unit?● Is the air flow of the outdoor unit obstructed?● Are the doors or windows opened, or is there any source of
heat in the room?● Is the set temperature suitable?
CONDITION CHECK THE FOLLOWING POINTS
Notes● In quiet operation or stopping the operation, the following phenomena
may occassionally occur, but they are not abnormal for the operation.(1) Slight flowing noise of refrigerant in the refrigerating cycle.(2) Slight rubbing noise from the fan casing which is cooled and then
gradually warmed as operation stops.● The odor will possibly be emitted from the room air conditioner because
the various odor, emitted by smoke, foodstuffs, cosmetics and so on,sticks to it. So the air filter and the evaporator regularly must be cleanedto reduce the odor.
● Please contact your sales agent immediately if the air conditioner still fails to operate normally after the aboveinspections. Inform your agent of the model of your unit, production number, date of installation. Please alsoinform him regarding the fault.
● Power supply shall be connected at the rated voltage, otherwise the unit will be broken or could not reach thespecified capacity.
When it does not cool wellWhen it does not hot well
Minimum Maximum Minimum Maximum
IndoorDry bulb °C 21 32 20 27Wet bulb °C 15 23 12 19
OutdoorDry bulb °C 21 43 2 21Wet bulb °C 15 26 1 15
Note● Avoid to use the room air conditioner for cooling operation when the outside temperature is below
21°C (70°F).The recommended maximum and minimum operating temperatures of the hot and cold sidesshould be as below:
Cooling Heating
– 29 –
CONSTRUCTION AND DIMENSIONAL DIAGRAMMODEL RAS-07GH4/09GH4/14GH4
Note:1. Servicing space of 100mm or more is required on the left and right sides of the indoor unit and also 50mm or
more space is required above the unit2. Insulated pipes should be used for both the narrow and wide dia. pipes.3. Piping length is within 15m (RAS-14GH4), 10m (RAS-07GH4/RAS-09GH4)4. Height different of the piping between the indoor unit and the outdoor unit should be within 5m.5. Power supply cord length is about 2m6. Connecting cable 2.5mm dia. x 3 (AB Line), 1.6mm dia. x 2 (CD Line) is used for the connection.
DCBA
LN
DCBA
Indoor UnitOutdoor Unit
ConnectingCord
ø1.6 or ø2.0
ø2.0
Linecord
REDBRN
WHTBLK
Power cord
Connecting cord
Drain hose
Approx 370 Approx 70 Narrow pipe (06.35)
Wide pipe (09.52)
Mounting plate
210
780
280
50
Discharge grill
Top air suction grill
50
47
205
Top air suction grill
Front panel
Approx 108
Drain pan
Drain cap connection port
H-deflector
Indoor unit service space
47
(190)
400 400 (190)
7070
60
30 60 22 60 81.5
47
V-deflector
47
560
11
5
When piping isdrawn horizontally,exchange the drainhose for the drain cap
147
56 17.5
About 380
Abo
ut 3
50
View from back(Pipe lead-out)
– 30 –
MODEL RAC-07GH4 / RAC-09GH4
MODEL RAC-14GH4
Air outlet
Handle
Air inlet
(18)
490
Handle
Viewed from P
157
245
225
8
10
50035
12
16
55
570
428
700
243
53 236
210 10 482
517
135
75
77
P
500
1237
124
57
1655628 750
85276
570
95 166
559
2616 280
195
280
1510
340
340
1032
0
– 31 –
MAIN PARTS COMPONENT
THERMOSTAT (Room Temperature Thermistor)
Thermostat Specifications
FAN MOTOR
Fan Motor Specifications
CONNECTION
INDICATION16
INDICATION24
INDICATION32
MODEL RAS-07GH4/09GH4/14GH4
THERMOSTAT MODEL IC
OPERATION COOL HEAT
ON 16.6 (61.9) 18.7 (65.6)
OFF 16.0 (60.8) 19.3 (66.7)
ON 24.6 (76.3) 26.7 (80.1)
OFF 24.0 (75.2) 27.3 (81.1)
ON 32.6 (90.7) 34.2 (94.5)
OFF 32.0 (89.6) 35.3 (95.5)
MODEL RAS-07GH4/09GH4/14GH4 RAC-07GH4/09GH4/14GH4
PHASE
RATED VOLTAGE
– – – – – SINGLE
RATED FREQUENCY
DC35V 220-240V
TEMPERATURE °C (°F)
OUTPUT
POLE NUMBER – – – – – 6
20 W 20W 30W 30W
– – – – – 50 Hz
35V
5V
RED
YELLOW
BLUE
M BLACK
CAPACITORRA
RED
INTERNALTHERMAL FUSE
GRAY
RM
RESISTANCE VALUE( )
20°C
75°C
– – – – –
– – – – –
RM = 355.1RA = 252.6
RM = 250.3RA = 171.1
RM = 253.0RA = 173.4
RM = 431.9RA = 307.1
RM = 304.4RA = 208.1
RM = 307.7RA = 210.9
– 32 –
MODEL RAC-07GH4/09GH4/14GH4
COMPRESSOR MODEL 5RS080 5PS112 5PS132
PHASE SINGLE
RATED VOLTAGE 220 – 240 V
RATED FREQUENCY 50 Hz
LOCKED ROTOR CURRENT 45 A
POLE NUMBER 2
COMPRESSOR MOTOR
Compressor Motor Specifications
CONNECTION
20°C(68°F)
75°C(167°F)
( )
RESISTANCE VALUE
! CAUTIONWhen the Air Conditioner has been operated for a long time with the capillary tubes clogged or crushed orwith too little coolant, check the color of the refrigerant oil inside the compressor. If the color has beenchanged conspicuously, replace the compressor.
RM = 5.233RA = 5.621
EXTERNAL OVERLOAD RELAY
INTERNAL PROTECTOR
YES
NO
ORANGE RM
WHITE
RA
RED
CAPACITOR
S (RED)
C (WHITE)
M OR R (ORANGE)
RAC-07GH4 / RAC-09GH4 / RAC-14GH4
RM = 2.826RA = 5.413
RM = 3.192RA = 4.621
RM = 6.364RA = 6.836
RM = 3.437RA = 6.583
RM = 3.882RA = 5.620
– 33 –
WIR
ING
DIA
GR
AM
MO
DE
LR
AS
-07/
09/1
4GH
4 //
RA
C-0
7/09
/14G
H4
RA
S-6
3CH
A1/
RA
C-6
3CH
A1
– 35
–
CIR
CU
IT D
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RA
M
Rem
ote
Con
trol
1 2 3 4 5 6 7 8 10 11 13 14 15 16 17 19 209 12 18
SEG
19SE
G18
SEG
17SE
G16
SEG
21SE
G24
SEG
25SE
G26
SEG
27SE
G28 NC
NC
NC
NC NC
NC
NC
NC
NC
SEG
20SE
G5
SEG
0SE
G1
SEG
2SE
G3
SEG
4SE
G5
SEG
6SE
G7
CO
M3
CO
M2
CO
M1
CO
M0
SEG
14SE
G13
SEG
12SE
G11
SEG
13SE
G9
SEG
8
40 39 38 37 36 35 34 33 31 30 28 27 26 25 24 22 2132 29 23
40 39 38 37 36 35 34 33 31 30 28 27 26 2532 29
6463
6261
6059
5857
5655
5453
5251
5049
4847
4645
4443
4142
65 66 67 68 69 70 71 72 74 75 77 78 79 8073 76
12
34
56
78
910
1112
1314
1516
1718
1920
2122
2423
SEG
20SE
G21
SEG
22SE
G23
SEG
24SE
G25
SEG
26SE
G27
SEG
28SE
G29
SEG
30SE
G31
SEG
32SE
G33
SEG
34SE
G35
SEG19SEG18SEG17SEG16SEG15SEG14SEG13SEG12SEG11SEG10SEG9SEG8SEG7SEG6SEG5SEG4SEG3SEG2SEG1SEG0
SEG43SEG42SEG41SEG40
P40P41P42P43P00P01P02P03P10P11P12P13D0D1D2D3D4D5D6D7D8D9BEEPP20P3
0P3
1N
CVL
C1
VL C
2VL
C3
XC IN
XC O
UT
VDD
X O
UT
X IN
RES
ETC
ARR
P23
P22
P21
VSS
IC
1 M
3455
OM6A
-504
FP
LCD
1
C8 50v/
1u
K 1
D3 RB42
5D(1
/2)
K2K3
K4 K5
P10
P11
P12
K6 K7 K
8
K8 K
10
K11K
12K1
8
K17
K15
K16
K13
K14
D0 D1 D2 D3
R1 100k
SW1
R2
P
100k
R3 100k R4 100k
R5Q1 2S
C344
3or
2SC
2982
R6R7
R9
D2D1
D1 D
2EL
-1L7
D3
(1/2)
RB42
5D
R10
12M
K19
X1
C9
R11
R15
R16
R13
R14
910k
Hz
105
104
104
150k
X2 kHz
C4C5
C6C7
18p
22p
R12
220k
220K
220k
100k
100k
32.76
8
C1C2
C322
0p22
0p33
4
R6 R
924
(1/8W
)
R8
330
SW
-187
-2P
Key
mat
rix ta
ble
P10
Inpu
tO
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0D
1D
2D
3
P11
P12
Doo
r op
en
Doo
r sh
ut
Doo
r op
en
Doo
r sh
ut–
Off
timer
–
Sle
ep–
On
timer
Hou
r up
Sta
rt/S
top
Sup
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ilent
coo
ling
Sta
rt/S
top
Roo
m te
mpe
ratu
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p
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ratio
n se
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ion
Res
erva
tion
–
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wn
–
Roo
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mpe
ratu
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own
Fan
spe
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elec
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Sup
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oolin
g
Can
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–
Day
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esen
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–
Aut
omat
ic s
win
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en
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– 37
–
PR
INT
ED
WIR
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BO
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OC
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DIA
GR
AM
MO
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LR
AS
-07G
H4/
09G
H4/
14G
H4
// R
AC
-07G
H4/
09G
H4/
14G
H4
– 39 –
BL
OC
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4/R
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H4/
RA
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4
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CU
IT
INIT
IALI
ZIN
GC
IRC
UIT
RE
SE
TC
IRC
UIT
MICROCOMPUTER
(AX
-3U
)M
FM
M F M
RE
VE
RS
ING
VA
LVE
R V
15 s
ec30
sec
30 s
ec
15 s
ec30
sec
30 s
ec15
sec
30 s
ec30
sec
+3
+2
+1
-1 -2 -3 -4
Set
tem
pera
ture
Sta
rt/s
top
switc
h
Fan
rel
ay H
Fan
rel
ay L
Fan
rel
ay S
Pow
er r
elay
Stic
k re
lay
Ext
erna
l fan
rel
ay
Rev
ersi
ng v
alve
rel
ay
Pilo
t lam
p
Hot
kee
p la
mp
SS
LH
SH
SL
B
SL
SL
H
2 se
c
2 se
c
2 se
c2
sec30
sec 30
sec
H
-1 -2 -3 -4
0.66
deg
0.33
deg
Set
tem
pera
ture
Sta
rt/s
top
butto
nF
an S
peed
S
Pow
er r
elay
Stic
k re
lay
Ope
ratio
n la
mp
30 s
ec 2 se
c
5 se
c
2 se
c
Ext
erna
l fan
rel
ay
30 s
ec
2 se
c2
sec
+3
+2
+1 -1 -2 -3
(Set
tem
pera
ture
) +
(Tem
pera
ture
shi
ft am
ount
)
Sta
rt/s
top
butto
nF
an r
elay
S
Pow
er r
elay
Stic
k re
lay
Ope
ratio
n la
mp
S
S
S
5 se
c
2 se
c
5 se
c
2 se
c2
sec
Ext
erna
l fan
rel
ay
30 s
ec30
sec
2 se
c2
sec
2 se
c
+3
+2
+1 -1 -2 -3
Set
tem
pera
ture
Sta
rt/s
top
butto
n
Fan
rel
ay H
Fan
rel
ay L
Fan
rel
ay S
Pow
er r
elay
Stic
k re
lay
Ext
erna
l fan
rel
ay
Ope
ratio
n la
mp
H
S
L
S L
H
S
S L
L
Sta
rt/s
top
butto
nF
an r
elay
H
Stic
k re
lay
Sta
rt/s
top
butto
nO
pera
tion
lam
p
Sta
rt/s
top
butto
nR
eser
vatio
nC
ance
lO
pera
tion
lam
pT
imer
lam
pT
imer
mem
ory
(OF
F ti
mer
dur
ing
stop
)(C
ance
l)(C
hang
e of
the
rese
rvat
ion
time)
Sta
rt/s
top
butto
nR
eser
vatio
nC
ance
lO
pera
tion
lam
pT
imer
lam
pT
imer
mem
ory
(ON
tim
er d
urin
g op
erat
ion)
(Can
cel)
(Cha
nge
of th
e re
serv
atio
n tim
e)
Sta
rt/s
top
butto
nR
eser
vatio
nC
ance
lO
pera
tion
lam
pT
imer
lam
pT
imer
mem
ory
(OF
FO
N ti
mer
)(O
N
OF
F ti
mer
)(O
N
O
FF
tim
er d
urin
g op
erat
ion)
(OF
F
O
N ti
mer
dur
ing
stop
)
PM
1:00
PM
3:00
PM
5:00
PM
1:00
PM
3:00
PM
5:00
PM
1:00
PM
3:00
PM
5:00
PM
1:00
PM
3:00
PM
5:00
Ope
ratio
n m
ode
Con
trol
fun
ctio
nFa
nC
oolin
gS
enso
r de
hum
idifi
catio
nH
eatin
gA
utom
atic
1S
tart
/sto
p bu
tton,
basi
c m
ode
2T
imer
oper
atio
nO
N t
imer
OF
F t
imer
OF
F
→
ON
timer
Aut
omat
ic
ME
D
LOHI
•O
pera
tion
in t
he p
revi
ous
circ
ulat
ion
mod
e
•O
pera
tion
in “
HI”
mod
e
•O
pera
tion
in “
ME
D”
mod
e
•O
pera
tion
in “
LO”
mod
e
•S
ame
as o
n th
e le
ft.
•S
ame
as o
n th
e le
ft.
•S
ame
as o
n th
e le
ft.
•O
nly
circ
ulat
ion
with
cut
vel
ocity
is
exec
uted
, in
depe
nden
tof
the
the
rmos
tat
sign
al.
(1)
Str
ong
3C
ircul
atio
nm
ode
The
rmos
tat
oper
atio
nH
→ H
I
L →
ME
D
S →
LO
•T
he p
ower
rel
ay i
sde
laye
d by
2 s
econ
dsfr
om t
he s
tart
of
ther
mos
tat
oper
atio
n.
(1)
In c
ase
of “
Aut
omat
ic”
mod
e
Not
e:•
The
min
. O
N t
ime
of t
he p
ower
rel
ayis
3 m
inut
es,
and
the
min
. O
FF
tim
eal
so i
s 3
min
utes
.
(2)
In o
ther
mod
es t
han
“Aut
omat
ic”
Sam
e as
abo
ve (
but
oper
atio
n is
mad
e w
ith t
he v
eloc
ity s
et a
t th
etim
e of
ope
ratio
n st
art)
.
•“H
I”,
“ME
D”,
or
“LO
” op
erat
ion
isex
ecut
ed a
ccor
ding
to
the
ther
mos
tat
sign
al.
(Ref
er t
o “T
herm
osta
t op
erat
ion”
.)
→
•“L
O”
and
“Sto
p” a
re r
epea
ted
acco
rdin
g to
the
the
rmos
tat
sign
al,
inde
pend
ent
of t
he s
ettin
g.
Note
s:•
Forc
ed o
pera
tion
by s
tart/
stop
butto
n O
N is
exec
uted
eve
nwi
th th
erm
osta
t OFF
.•
The
room
tem
pera
ture
30
sec
afte
r ope
ratio
n st
art,
min
us0.
66 d
eg, b
ecom
es th
e se
tte
mpe
ratu
re.
•W
hen
the
room
tem
pera
ture
is 16
°C o
r low
er, 1
6°C
beco
mes
the
set t
empe
ratu
re.
•Th
e ot
her
oper
atio
ns a
re th
esa
me
as fo
r (1
).
Air-
blow
mod
e(A
)(B
)
HL
H
LL
L
SS
LA
utom
atic
LX
L
•“H
I”,
“ME
D”,
“LO
”, a
nd “
Sto
p” a
re r
epea
ted
acco
rdin
g to
the
the
rmos
tat
sign
al a
nd t
ime.
•“H
I”,
“ME
D”,
“LO
”, a
nd “
Sto
p” a
re r
epea
ted
acco
rdin
g to
the
the
rmos
tat
sign
al a
nd t
ime.
•“M
ED
”, “
LO”,
and
“S
top”
are
rep
eate
d ac
cord
ing
to t
he t
herm
osta
t si
gnal
and
time.
•“L
O”
and
“Sto
p” a
re r
epea
ted
acco
rdin
g to
the
the
rmos
tat
sign
al a
nd t
ime.
•T
he “
Aut
omat
ic”
spee
d m
ode
for
each
ope
ratio
n m
ode
is u
sed
inde
pend
ent
of t
he s
ettin
g.(“
Wee
k” a
t th
e tim
e of
“S
enso
rde
hum
idifi
catio
n”.)
•T
he o
pera
tion
mod
e at
the
star
t of
ope
ratio
n di
ffers
as
show
n be
low
acc
ordi
ng t
oth
e ro
om t
empe
ratu
re.
•A
shi
ft is
not
acc
epte
d at
the
time
of o
pera
tion
star
t.•
The
re i
s no
sw
itchi
ng b
etw
een
mod
es a
fter
star
t of
ope
ratio
n.•
Whe
n th
e op
erat
ion
is s
tart
edag
ain
with
in 2
0 m
in.
afte
rst
op w
ith t
he s
tart
/sto
p bu
tton,
oper
atio
n w
ill b
e ex
ecut
ed i
nth
e pr
evio
us m
ode.
•T
he o
pera
tion
deta
ils a
re t
hesa
me
as f
or e
ach
oper
atio
n m
ode.
•T
he s
et t
empe
ratu
re i
s se
t w
ithth
e ro
om t
empe
ratu
read
just
men
t bu
tton.
Cor
rect
ion
by V
, ±3
°C i
s po
ssib
le w
ith.
At
this
tim
e, t
he o
pera
tion
mod
eju
dgem
ent
tem
pera
ture
als
o is
shift
ed a
t th
e sa
me
time.
How
ever
, co
rrec
tion
is p
ossi
ble
only
in
cool
ing
oper
atio
n m
ode,
but
not
in “
Sen
sor
dehu
mid
ifica
-tio
n” m
ode.
(2)
Set
tem
pera
ture
is
high
er t
han
room
tem
pera
ture
.
(1)
Whe
n th
e se
t te
mpe
ratu
re i
s lo
wer
tha
n th
e ro
omte
mpe
ratu
re.
Exa
mpl
e fo
r “H
I” c
ircul
atio
n m
ode
4
Not
es:
•T
he m
in.
ON
tim
e of
the
pow
er r
elay
is
3 m
inut
es,
and
the
min
. O
FF
tim
eal
so i
s 3
min
utes
.•
In a
utom
atic
circ
ulat
ion
mod
e, “
HI”
in
sect
ion
(B)
occu
rs o
nly
the
first
tim
e.
BA
SIC
MO
DE
MO
DE
LR
AS
-07G
H4/
09G
H4/
14G
H4
// R
AC
-07G
H4/
09G
H4/
14G
H4
•T
he m
in.
ON
tim
e of
the
pow
er r
elay
is
3 m
inut
es,
and
the
min
. O
FF
tim
e al
so i
s 3
min
utes
.•
The
ind
oor
fan
is n
ot d
elay
ed w
ith o
pera
tion
star
t by
sta
rt/
stop
but
ton
ON
.•
The
ind
oor
fan
is d
elay
ed b
y 5
sec
with
ope
ratio
n st
art
by t
herm
osta
t op
erat
ion.
Cool
ing
The
set t
empe
ratu
resh
all b
e 27
°C.
Sens
orTh
e se
t tem
pera
ture
dehu
mid
i-sh
all b
e 2
degr
ees
ficat
ion
belo
w th
e ro
omte
mpe
ratu
re a
t the
star
t of o
pera
tion.
Heat
ing
The
set t
empe
ratu
resh
all b
e 23
°C +
tem
pera
ture
shi
ftam
ount
.
No.
(0.5
)(0
.5)
(0.5
)(0.
5)(0
.5) (0
.5)(0
.5)(0
.5)
1 se
c1
sec
(1 s
ec)
Fan
rel
ay H
Pow
er r
elay
Stic
k re
lay
Ext
erna
l fan
rel
ay
Rev
ersi
ng fa
n re
lay
Tim
er r
elay
Indo
or h
eat e
xcha
nger
ther
mis
tor
tem
pera
ture
T1
Low
-tem
pera
ture
inpu
t
T8
T9
T6
T7
T5
T3
T4
TE
MP
ER
AT
UR
E O
F IN
DO
OR
HE
AT
EX
CH
AN
GE
R T
HE
RM
IST
OR
PD
CU
T 1
PD
CU
T 2
PD
CU
T 3
FA
N R
ELA
Y H
FA
N R
ELA
Y L
PO
WE
R R
ELA
Y
ST
ICK
RE
LAY
EX
TE
RN
AL
FA
N R
ELA
Y
RE
VE
RS
ING
VA
LVE
RE
LAY
5 6
Reversing valve lock protection
AIR
BLO
W C
HA
NG
E T
O "
H"
FO
RC
ILY
WH
EN
EN
TE
RIN
G "
PD
CU
T 2
"A
IR B
LOW
CA
N B
E C
HA
NG
ED
BY
RE
MO
TE
CO
NT
RO
L A
FT
ER
TE
MP
. T
7.A
IR B
LOW
RE
TU
RN
S T
O T
HE
SE
T S
PE
ED
AT
T5.
•A
ll re
lays
are
sto
pped
by
low
-te
mpe
ratu
re in
put.
•N
ot a
ccep
ted
durin
g ho
t ke
ep,
durin
g co
mpr
esso
r st
op,
durin
gde
frost
ing
and
durin
g fo
rced
3 m
inut
es.
•A
ccep
ted
only
dur
ing
heat
ing
oper
atio
n.•
Rec
over
y at
the
tim
e of
sto
p by
low
-tem
pera
ture
inpu
t is
res
etre
cove
ry.
•Th
e tim
er la
mp
flash
es a
t th
etim
e of
sto
p.
– 41
–
Heating load reduction and Pd cut
Room temperatureat the start of
operation
➜
➜
– 43
–
Set
tem
pera
ture
Sta
rt/s
top
switc
h
Sle
ep k
ey
Ope
ratio
n la
mp
Ope
ratio
n la
mp
Tim
er la
mp
Tim
er la
mp
60 m
inut
es5 de
g do
wn
LO (
slee
p op
erat
ion)
Set
circ
ulat
ion
velo
city
Set
tem
pera
ture
Sta
rt/s
top
switc
h
Sle
ep k
ey
Ope
ratio
n la
mp
Sle
ep k
ey
Tim
er la
mp
60 m
inut
es5 de
g do
wn
LO (
slee
p op
erat
ion)
Set
circ
ulat
ion
velo
city
Sta
rt/s
top
switc
h
The
rmos
tat s
igna
l
Pre
heat
ing
sign
al
Fan
rel
ay H
Fan
rel
ay L
Fan
rel
ay S
Pow
er r
elay
Hot
ke e
p la
mp
2 se
c
T3
min
utes
30 s
ec 3
0 se
c15
sec
30 s
ec 3
0 se
c"S
tron
g" c
ircul
atio
n
2 se
c
TE
15 s
ec
15 m
inut
es-T
E
30 s
ec30
sec
Com
plet
ion
Def
rost
ing
star
t
30 s
ec30
sec
2 se
c
10 s
ec
Sta
rt/s
top
switc
h
Def
rost
ing
sign
al
Pre
heat
ing
sign
al
Fan
rel
ay H
Fan
rel
ay L
Fan
rel
ay S
Pow
er r
elay
Stic
k re
lay
Ext
erna
l fan
rel
ay
Rev
ersi
ng v
alve
rel
ay
Hea
ter
rela
y
Ope
ratio
n la
mp
Hot
kee
p la
mp
2 se
c
10 s
ec
TA
30 s
ec60
sec
3 m
inut
es
TA
30 s
ec60
sec
TB
TC
15 s
ec
Indo
or h
eat e
xcha
nger
ther
mis
tor
tem
pera
ture
T1
Fan
rel
ay H
Pow
er r
elay
Stic
k re
lay
Out
side
fan
rela
y
Ope
ratio
n la
mp
Fan
rel
ay S
Pow
er r
elay
Stic
k re
lay
Out
side
fan
rela
y
Ope
ratio
n la
mp
Min
. 3 m
inut
es
Set
circ
ulat
ion
velo
city
Set
tem
pera
ture
Sta
rt/s
top
switc
h
Sle
ep k
ey
Ope
ratio
n la
mp
Tim
er la
mp
60 m
inut
es
2 de
g up
LO (
slee
p op
erat
ion)
Con
trol
fun
ctio
n
Ope
ratio
n m
ode
Fan
Coo
ling
Sen
sor
dehu
mid
ifica
tion
Hea
ting
Aut
omat
ic
•S
leep
ope
ratio
n is
exe
cute
dfo
r ea
ch o
pera
tion
mod
e.
•S
leep
ope
ratio
n is
exe
cute
dfo
r ea
ch o
pera
tion
mod
e.
•A
t th
e tim
e of
hea
ting
oper
atio
n m
ode,
the
sam
eop
erat
ion
as f
or h
eatin
gis
exe
cute
d.
•D
efro
stin
g of
eac
h op
erat
ion
mod
e is
exe
cute
d.
7•
The
ope
ratio
n is
switc
hed
OF
Fat
the
set
tim
e.
8P
rehe
atin
gop
erat
ion
9D
efro
stin
g(in
clud
ing
auto
mat
icfr
esh
defr
ostin
g).
Not
es:
•60
min
utes
afte
r th
e sl
eep
key
is s
witc
hed
on,
slee
p op
erat
ion
is s
tart
ed.
•W
hen
the
slee
p ke
y is
sw
itche
d on
dur
ing
OF
F t
imer
ope
ratio
n,th
e O
FF
tim
er w
ill b
e ca
ncel
ed.
• W
hen
the
slee
p ke
y is
sw
itche
d on
dur
ing
OF
F t
imer
ope
ratio
n, t
he O
FF
tim
er w
ill b
e ca
ncel
led.
• W
hen
the
slee
p ke
y is
sw
itche
d on
dur
ing
ON
afte
r a
timer
res
erva
tion,
sle
ep o
pera
tion
will
be
star
ted.
Not
es:
•E
ven
whe
n th
e pr
ehea
ting
sign
al i
s no
t gi
ven
as i
nput
, he
atin
g op
erat
ion
is s
tart
ed w
hen
3 m
inut
es h
ave
pass
ed f
or T
.•
Pre
heat
ing
oper
atio
n is
exe
cute
d at
the
tim
e of
ope
ratio
n st
art
and
afte
r co
mpl
etio
nof
def
rost
ing,
and
at
all
othe
r tim
es,
ther
e is
no
oper
atio
n, i
ndep
ende
nt o
f th
e pr
ehea
ting
sign
al.
TA(R
ever
se c
ycle
def
rost
ing)
10
min
.m
in.
TB(S
ilenc
ing
perio
d)30
sec
TC(C
ycle
bal
anci
ng t
ime)
30 s
ec
TE(D
efro
stin
g pr
ohib
ition
time)
50
min
.m
in.
+0 -5+0 -1
•F
or t
he t
ime
TE
afte
r st
art
of h
eatin
g op
erat
ion,
def
rost
ing
will
not
be
exec
uted
eve
n w
hen
the
defr
ostin
g si
gnal
is
give
n as
inp
ut.
•W
hen
the
rese
rve
cycl
e de
fros
ting
TA
has
con
tinue
d fo
r th
e tim
esh
own
in t
he t
able
on
the
left,
the
ope
ratio
n ad
vanc
es t
o T
B a
nd T
Cin
depe
nden
t of
the
def
rost
ing
sign
al.
•W
hen
the
pow
er r
elay
bec
omes
ON
afte
r ex
pira
tion
of t
he t
ime
TE
,de
fros
ting
will
be
star
ted
imm
edia
tely
with
inp
ut o
f th
e de
fros
ting
sign
al.
•O
nce
defr
ostin
g ha
s be
en c
ompl
eted
, th
e de
fros
ting
sign
al i
s no
tac
cept
ed f
or t
he t
ime
TE
.•
Whe
n a
defr
ostin
g si
gnal
has
bee
n gi
ven
as i
nput
at
the
time
of s
top
by m
eans
of
the
star
t/sto
p sw
itch
or a
t th
e tim
e of
OF
F t
imer
cou
nt-u
p,de
fros
ting
is e
xecu
ted
befo
re o
pera
tion
stop
.•
The
def
rost
ing
sign
al i
s no
t ac
cept
ed a
t th
e tim
e of
ove
rload
inp
ut.
Sensor dehumidificationCooling strong
No.
•T
he s
et t
empe
ratu
reaf
ter
slee
p sh
ift i
nse
nsor
deh
umid
ifica
tion
oper
atio
n is
lim
ited
by 1
6°C
.
Aut
omat
icH
eatin
g
Fan
Sen
sor
dehu
mid
ifica
tion
Coo
ling
Hea
ting
Coo
ling
Yes
Yes
Yes
Yes
Yes
Yes
(au
tom
atic
)N
OY
es
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes No
Yes
Yes
Coo
ling/
Hea
ting
Item
Ope
ratio
n sw
itchi
ng
Tem
pora
ry s
witc
h
Ser
vice
sw
itch
Nic
e te
mpe
ratu
re r
eser
vatio
nA
utom
atic
fre
sh d
efro
stin
gD
efro
stin
gP
d cu
t 1
Pd
cut
2P
d cu
t 3
Hea
ting
load
red
uctio
nE
xter
nal
fan
rela
yR
ever
sing
val
ve r
elay
Rev
ersi
ng v
alve
loc
k pr
otec
tion
Sle
ep c
ircui
t
Hea
ter
oper
atio
n at
the
tim
e of
sen
sor
dehu
mid
ifica
tion
Aut
omat
ic b
low
ing
dire
ctio
nF
ilter
sig
n
Wire
less
mod
e
Item
Coo
ling,
Sen
sor
1616
.6
ON
tem
pera
ture
dehu
mid
ifica
tion
2424
.6T
herm
osta
t(T
herm
osta
t re
lay)
3232
.6
oper
atio
npo
wer
rel
ayH
eatin
g16
18.7
(°C
)24
26.7
3234
.7D
iffer
entia
l (°
C)
0.33
– –Lo
w-t
empe
ratu
re(T
1)O
N (
°C)
1.0
defr
ostin
gR
eset
(°C
)12
.0P
rehe
atin
gR
eset
(°C
)17
.0O
N (
°C)
15.0 – –
Pd
cut
1(T
3)O
N (
°C)
50.0
42(T
4)R
eset
(°C
)47
.038
Pd
cut
2(T
6)O
N (
°C)
63.0
(T7)
Res
et (
°C)
57.0
(T5)
Fan
Rel
ay H
[ O
rigin
al (
°C)
43.0
Pd
cut
3(T
8)O
N (
°C)
71.0
(T9)
Res
et (
°C)
63.0
Tab
le 1
Spe
cific
atio
ns
Tab
le 2
Sen
sor
oper
atio
n va
lues
Oth
er d
etai
led
spec
ifica
tions
1.W
hen
the
room
tem
pera
ture
ris
esw
ithin
3 m
inut
es a
fter
ther
mos
tat
OF
F d
urin
g co
olin
g op
erat
ion
with
au
tom
ati
c ve
loci
ty,
the
b
low
ing
velo
city
cha
nges
in
the
orde
r of
S →
L →
H i
n th
e sa
me
way
as
at t
he t
ime
of t
herm
osta
t O
N.
2.In
cas
e of
Tel
e. c
ontr
ol in
put
durin
gst
oppe
d O
N t
imer
, op
erat
ion
will
be s
tart
ed a
t tha
t tim
e an
d th
e tim
erw
ill b
e cl
eare
d.
3.In
cas
e of
Tel
e. c
ontr
ol in
put
durin
go
pe
ratio
n
of
the
O
FF
tim
er,
th
eop
erat
ion
will
be
stop
ped
at t
hat
time
and
the
timer
will
be
clea
red.
4.E
ven
w
he
n
op
era
tio
n
sto
p
isex
ecut
ed a
t th
e tim
e of
out
side
fan
OF
F b
y ov
erlo
ad,
auto
mat
ic f
resh
defr
ostin
g w
ill n
ot b
e ex
ecut
ed.
5.In
cas
e of
sw
itchi
ng t
o “H
eatin
g”d
uri
ng
“A
uto
ma
tic”
h
ea
tin
go
pe
ratio
n,
the
o
pe
ratio
n
will
b
eco
nti
nu
ed
a
s it
is
w
he
n
the
ther
mos
tat
is O
N.
3 m
in d
elay
will
not
be e
nter
ed.
How
ever
, th
e se
tro
om t
empe
ratu
re a
nd t
he b
low
ing
velo
city
will
be
acco
rdin
g to
the
rem
ote
cont
rol
sign
al.
The
sam
eap
plie
s fo
r sw
itchi
ng f
rom
“H
eatin
g”to
“A
utom
atic
” he
atin
g.
6.In
cas
e of
sw
itchi
ng f
rom
“S
enso
rd
eh
um
idif
ica
tio
n”
op
era
tio
n
to“C
oo
lin
g”,
a
s it
is
w
he
n
the
ther
mos
tat
is O
N.
3 m
in d
elay
will
not
be e
nter
ed.
How
ever
, th
e se
tro
om t
empe
ratu
re a
nd t
he b
low
ing
velo
city
will
be
acco
rdin
g to
the
rem
ote
cont
rol
sign
al.
Th
e
sam
e
ap
plie
s fo
r sw
itch
ing
from
“Coo
ling”
to
“S
enso
r de
hum
idifi
ca-
tion”
. T
he s
ame
also
app
lies
for
“Aut
omat
ic”
sens
or d
ehum
idifi
ca-
tion,
coo
ling
“Sen
sor
dehu
mid
ifica
-tio
n”,
“Coo
ling”
.
7.T
he f
ilter
sig
n lig
hts
afte
r op
erat
ion
of t
he i
ndoo
r fa
n fo
r 10
0 ho
urs.
The
tim
e is
cle
ared
whe
n po
wer
switc
h se
t to
OF
F a
nd O
N a
gain
.
8.A
fter
entr
y in
to t
roub
le m
ode
(whe
nth
e in
dica
tion
lam
p is
fla
shin
g),
the
rap
id
fee
d
mo
de
ca
n
no
t b
ech
ange
d.
9.W
he
n
op
era
tio
n
by
nic
ete
mp
era
ture
re
serv
ati
on
is
exec
uted
dur
ing
slee
p op
erat
ion,
norm
al o
pera
tion
will
be
cont
inue
d,an
d th
e ad
vanc
e tim
e be
com
es t
hete
mpe
ratu
re d
iffer
ence
bet
wee
n th
ese
t te
mpe
ratu
re w
ithou
t sl
eep
shift
and
the
room
tem
pera
ture
.
10.
Th
e
50
m
inu
tes
of
de
fro
stin
gp
roh
ibit
ion
a
re
cou
nte
d
fro
mT
he
rmo
sta
t O
N
aft
er
sta
rt/s
top
switc
h O
N.
Whe
n th
e th
erm
osta
tis
OF
F a
t th
e tim
e of
sta
rt/s
top
switc
h O
N,
the
60 m
inut
es w
ill b
eco
unte
d fr
om th
e tim
e of
ther
mos
tat
ON
. T
he i
nitia
l O
FF
tim
e is
not
coun
ted.
Cou
ntin
g st
arts
whe
n th
eth
erm
osta
t be
com
es O
N,
and
the
coun
t th
en c
ontin
ues
even
if
the
ther
mos
tat
beco
mes
OF
F.
11.
In c
ase
of s
witc
hing
fro
m “
Hea
ting”
the
reve
rsin
g va
lve
is h
eld
for
3m
inut
es.
12.
Th
e
de
fro
stin
g
sig
na
l is
n
ot
acce
pted
with
ove
rload
inp
ut,
and
the
oper
atio
n be
com
es a
s sh
own
be
low
w
he
n
the
o
verl
oa
d
inp
ut
disa
ppea
rs.
(1)
Wh
en
p
revi
ou
sly
the
de
fro
stin
g
sig
na
l e
xist
ed
wit
ho
ut
ove
rlo
ad
in
pu
t,d
efr
ost
ing
w
ill
sta
rtim
med
iate
ly.
(2)
In
case
s o
the
r th
an
th
ea
bo
ve,
de
fro
stin
g
will
b
eex
ecut
ed w
ith a
def
rost
ing
sig
na
l in
th
e
con
dit
ion
with
out
over
load
inp
ut.
RAS-
07GH
4/09
GH4
RAS-
14GH
4
●T
he a
ir de
flect
or c
ontr
ol o
pera
tion
show
n be
low
is
done
whe
n th
e sw
ing
switc
his
pre
ssed
or
whe
n th
e op
erat
ion
mod
e is
cha
nged
.●
The
air
defle
ctor
con
trol
ope
ratio
n sh
own
belo
w i
s do
ne w
hen
the
oper
atio
nsw
itch
is t
urne
d of
f.
Item
3-w
ayA
UT
O (
Sw
ing)
Spe
cific
atio
n
Cool
ing/
dehu
mid
i-fy
ing
Heat
ing
(Whe
n th
eop
erat
ionsw
itch
istu
rned
off
Auto
mat
icsh
utop
erat
ion)
Air
blow
ing
dire
ctio
nco
ntro
l
8
Oth
er d
etai
led
spec
ifica
tions
1.W
hen
the
room
tem
pera
ture
sta
rts
toin
crea
se w
ithin
3 m
inut
es a
fter
ther
mo
OF
F in
“co
olin
g” a
nd f
an s
peed
“A
UT
O”,
the
fan
spee
d ch
ange
s L
→ M
→ H
as
whe
n th
erm
o O
N.
2.If
“coo
ling”
is
sele
cted
dur
ing
“sen
sor
dehu
mid
ifica
tion”
ope
ratio
n th
e op
erat
ion
cont
inue
s as
it
is w
ith t
he t
herm
o O
N.
The
3 m
inut
es d
elay
is
not
star
ted.
The
set
tem
pera
ture
and
fan
spe
ed d
epen
don
the
rem
ote
cont
rol
sign
al.
It is
sam
e fo
r “c
oolin
g” –
– –
– “
sens
orde
hum
idifi
catio
n”.
It is
sam
e fo
r “A
UT
O”
sens
or d
ehum
idifi
catio
n co
olin
g “s
enso
rde
hum
idifi
catio
n” “
cool
ing”
.
3.T
he
fil
ter
sig
n
ligh
ts
aft
er
10
0
ho
urs
oper
atio
n of
the
room
fan.
The
lam
p go
esou
t w
hen
the
PO
WE
R S
WIT
CH
set
to
OF
F a
nd O
N a
gain
.
4.A
fter
the
failu
re m
ode
is s
tart
ed (
indi
cato
rla
mp
flick
erin
g),
rapi
d m
ode
chan
ging
cann
ot b
e do
ne.
5.If
the
ope
ratio
n is
mad
e by
the
nic
ete
mpe
ratu
re r
eser
vatio
n du
ring
the
slee
po
pe
rati
on
, th
e
no
rma
l o
pe
rati
on
cont
inuo
usly
occ
urs,
and
for
the
adva
nce
time,
the
tem
pera
ture
diff
eren
ce b
etw
een
the
set
tem
pera
ture
with
out
slee
p sh
iftan
d “r
oom
tem
pera
ture
” is
use
d.
– 45
–
●O
pera
tion
star
ts in
adv
ance
so
that
the
roo
m t
empe
ratu
re r
each
esth
e pr
eset
val
ue a
t th
e se
t tim
e.●
The
ope
ratio
n tim
e is
obt
aine
d as
fol
low
s de
pend
ing
on t
he r
oom
tem
pera
ture
whe
n op
erat
ion
star
ts.
(1)
Cal
cula
tion
met
hod
of t
he m
oved
-up
time.
Mov
ed-u
p tim
e (M
T)
= M
oved
-up
time
depe
ndin
g on
the
tem
pera
ture
diffe
renc
e (O
T)
+ c
ompe
nsat
ion
time
(HT
).M
T i
s at
lea
st 1
min
ute
if O
T i
s no
t ze
ro.
Hea
ting
Coo
ling
(MT
)00
~ 6
0 m
in.
00 ~
60
min
.
(OT
)00
~ 6
0 m
in.
00 ~
60
min
.
(HT
)–6
0 ~
60
min
.–6
0 ~
60
min
.
Obt
ain
OT
(m
oved
-up
time
depe
ndin
g on
the
tem
pera
ture
diff
eren
ce)
from
the
tab
le b
elow
.
10
“NIC
ETE
MPE
RA-
TURE
”re
serv
atio
n
Hea
ting
Coo
ling
Setti
ng te
mp.
–Ro
om te
mp.
Tim
e (m
in.)
Setti
ng te
mp.
–Ro
om te
mp.
Tim
e (m
in.)
00–
01.0
000
00.0
0–
02.0
000
01.2
5–
03.0
010
02.2
5–
05.0
015
03.2
5–
07.0
020
05.2
5–
08.0
030
07.2
5–
10.0
030
08.2
5–
11.0
045
10.2
5–
13.0
040
11.2
5–
6013
.25
–16
.00
5016
.25
–19
.00
6019
.25
–22
.00
6022
.25
–❈
The
pre
set
tem
pera
ture
val
ue s
how
n ab
ove
does
not
incl
ude
any
shift
val
ue.
(2)
Com
pens
atio
n
1T
he “
Atta
ined
” st
ate
is m
onito
red
and
a “N
ot a
ttain
ed”
chec
k is
done
to
revi
se t
he c
ompe
nsat
ion
time
(HT
).
“Atta
ined
” m
onito
r
Con
tinuo
usly
mon
itore
d du
ring
“NIC
E T
EM
PE
RA
TU
RE
” op
erat
ion.
(H
eatin
g)
Whe
n th
e ro
om t
empe
ratu
re <
Set
val
ue +
com
pens
atio
n sh
ift,
itis
reg
arde
d to
be
“atta
ined
” an
d 5
min
utes
are
red
uced
fro
m t
heco
mpe
nsat
ion
time.
(C
oolin
g)
Whe
n th
e ro
om te
mpe
ratu
re <
Set
val
ue +
com
pens
atio
n sh
ift, i
t’sop
erat
ed s
ame
as a
bove
.
“Not
atta
ined
” ch
eck
Per
form
ed o
nce
whe
n th
e “N
ICE
TE
MP
ER
AT
UR
E”
timer
is c
ompl
eted
.
(H
eatin
g)
Whe
n th
e ro
om te
mpe
ratu
re <
Set
val
ue +
com
pens
atio
n sh
ift 1
°C,
it is
reg
arde
d to
be
“Not
atta
ined
” an
d 5
min
utes
are
add
ed t
o th
eco
mpe
nsat
ion
time.
(C
oolin
g)
Whe
n th
e ro
om t
empe
ratu
re >
Set
val
ue +
com
pens
atio
n sh
ift+
1°C
, it’
s op
erat
ed s
ame
as a
bove
.
❈If
the
room
tem
pera
ture
is
with
in +
1°C
fro
m t
he s
et v
alue
+co
mpe
nsat
ion
shift
, co
mpe
nsat
ion
is n
ot d
one.
Item
ON
tem
pera
ture
The
rmos
tat
oper
atio
n(T
herm
osta
t re
lay)
pow
er r
elay
(°C
)
Diff
eren
tial
(°C
)
Low
-tem
pera
ture
def
rost
ing
Coo
ling,
sen
sor
dehu
mid
ifica
tion
(T1)
RA
S-0
7/09
/14G
H4
1616
.624
24.6
3232
.60.
33
ON
(°C
)1.
0R
eset
(°C
)12
.0
Tab
le 2
Sen
sor
oper
atio
n va
lues
Item
RA
S-0
7/09
/14G
H4
Aut
omat
icY
esH
eatin
gY
esO
pera
tion
switc
hing
Sen
sor
dehu
mid
ifica
tion
Yes
Coo
ling
Yes
Fan
Yes
Tem
pora
ry s
witc
hY
es (
auto
mat
ic)
Ser
vice
sw
itch
Coo
ling
Yes
Nic
e te
mpe
ratu
re r
eser
vatio
nY
esD
efro
stin
gY
esS
leep
circ
uit
Yes
Hea
ter
oper
atio
n at
the
tim
e of
sen
sor
dehu
mid
ifica
tion
No
Aut
omat
ic b
low
ing
dire
ctio
nY
esF
ilter
sig
nY
esW
irele
ss m
ode
Hea
t an
d C
ool
wire
less
Tab
le 1
Spe
cific
atio
ns
Dow
nU
pD
own
Up
❈ S
win
g st
art d
irect
ion
Dow
n
Up
❈ S
win
g st
art d
irect
ion
– 47 –
REFRIGERANT CYCLE DIAGRAMMODEL RAS-07GH4/RAC-07GH4
2S—VALVE
STRAINER
HEATING &COOLINGCAPILLARYSTRAINER
CHARGINGPIPE
COMP
CONDENSER
REVERSINGVALVE
S — TANK
3S — VALVE
EVAPORATOR
MODEL RAS-09GH4/RAC-09GH4
COMP
CONDENSER
REVERSINGVALVE
HEATINGCAPILLARY
STRAINER
CHARGINGPIPE
CHECK VALVE STRAINER
HEATING &COOLINGCAPILLARY
S-TANK
3S-VALVE
2S-VALVE
EVAPORATOR
– 48 –
MODEL RAS-09GH4/RAC-09GH4
HEATINGCAPILLARY
STRAINER
CHARGINGPIPE
HEATING &COOLINGCAPILLARY
EVAPORATOR
2S — VALVE
3S — VALVE
S — TANK
COMP
CONDENSER
REVERSINGVALVE
ACCUMULATOR
STRAINERCHECK VALVE
– 49 –
DESCRIPTION OF MAIN CIRCUIT OPERATION
1. ON / OFF
The “ON / OFF” and “Timer reserve button” and “Sleeping” function independently.Their operations are shown in Fig. 1-1.
ON/OFF button
Timer reserve button(Sleeping)
Operation lamp
Timer lamp
When OFFtimer(sleeping)is set
Start Stop Start
"OFF" time
When ONtimer is set
"ON" time
ON/OFF button
Timer reserve button
Operation lamp
Timer lamp
StopStart
Fig. 1-1 Timer operation
– 50 –
2. Reset Circuit
● The reset circuit is used to reset the program to its initial settings when the power is turned on or when thepower is recovered after a power failure.
● The micro computer is reset when the reset input is “Hi”, and operation is possible when the reset input is“Lo”.
● The waveforms at each point when the power is turned on and off are shown in the diagrams.
● When the power is turned on, the voltages of the DC 12V line and DC 5V lines are increased. When thevoltage of DC 12V lines reaches about 7V, ZD511 is turned ON, the potential of Q511’s base rises and Q511is turned ON. Since Q511’s collector is set to “LO” at this time, Q512 is turned OFF and the reset input ofthe micro computer is set to “Lo”. The DC 5V line voltage has already become 5V at this time and the microcomputer starts operation.
● When the power is turned OFF, the voltage of the DC 12V line decreases. When it becomes about 7V, ZD511is turned OFF, then Q511 is turned OFF, Q512 is turned ON the reset input of the micro computer is set to“Hi’ and the micro computer is set to the reset mode.
POWER ON
12V
7V
5V
DC12V Line
DC5V Line
Base
POWER OFF
5VMicro computerPin 26
12V
5V
0V
0V
Q511 C512
26
Micro computer(AX-3U)
RES
Q512R
511
R51
4
ZD
511
R51
3
R51
5
R51
2 +
C51
1
– 51 –
3. Buzzer Circuit
Micro computer(AX-3U)
BUZZER
BZ1
12V
0V
R80
1
Q30
2
B.Z
30
When the buzzer is to be activated, buzzer output pin 30 of the micro computer alternates between ON and OFFrepeatedly at 4kHz and Q302 is turned ON/OFF accordingly. A 4kHz voltage is applied to the buzzer and thediaphragm of the buzzer vibrates to output 4kHz sound.
4. Initial setting (IC301)
The pre-heating operation start value, ratings of the compressor, maximum rotation speed, etc. are preset inthe micro computer.
5. Receive circuit
Infrared signals from the wireless remote controller are received by the light receiving unit and output after beingamplified and shaped.
8 7IC301
(E 2PROM)
6 5
5V
0V
R302
Micro computer(AX-3U)
3
4R305
5V
C30
1
C30
2
D30
4
D30
3
R30
3
D30
2
D30
1
R30
6
1 2 4
0V
3
R621
R712C710
ZD
701
0V
0V
R622
ReceiverUnit
R71
4
R71
3
12V
27
Micro computer(AX-3U)
REMOCON I/P
– 52 –
6. Service Operation Circuit
● Use the service switch to select “Cooling” temporarily when the interior electric equipment has troubled.
● Setting the switch to “Cooling” causes continuous cooling room temperature control. To control the roomtemperature, turn on and off the disconnect switch. To protect the compressor, wait at least 3 minutesbefore turning on again.
● The fan speed is “MED”.
● Does not operate is 12V is not generated in the control circuit.
● When the service switch is used for operation, each change switch is overridden.
● Setting the service switch to “Cooling” turns on the “Stick relay” and “Power relay”.
Micro computer(AX-3U)
FORCE COOL 42
5V
0V
R606
CoolNormal
– 53 –
INP
UT
SIG
NA
LO
PE
RA
TIN
G S
PE
CIF
ICA
TIO
NR
EF
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EN
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OP
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AT
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OP
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MO
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AIR
DE
FLE
CT
OR
PR
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EN
T C
ON
DIT
ION
KE
Y I
NP
UT
INT
ER
NA
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AN
ON
(TH
ER
MO
. O
N)
INT
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NA
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OF
F(T
HE
RM
O.
OF
F)
MA
IN S
WIT
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ON
MA
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F
CH
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OF
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ST
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DU
RIN
GO
PE
RA
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DU
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GO
PE
RA
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ST
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DU
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GO
PE
RA
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DU
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RA
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EA
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MO
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CO
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DR
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ON
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WIN
G (
CLO
SIN
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IR D
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LEC
TO
R)
1 D
OW
NW
AR
D2
UP
WA
RD
INIT
IALI
ZE
1 D
OW
NW
AR
D
INIT
IALI
ZE
1 D
OW
NW
AR
D2
UP
WA
RD
ST
OP
AT
TH
E M
OM
EN
T.
ST
AR
T S
WIN
GIN
G1
DO
WN
WA
RD
2 U
PW
AR
D3
DO
WN
WA
RD
ST
OP
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TH
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EN
T.
ST
AR
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WIN
GIN
G1
DO
WN
WA
RD
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WIN
G (
CLO
SIN
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ER
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.
INIT
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.
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DU
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SW
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DU
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WIN
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DU
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WIN
GIN
G
TE
MP
OR
AR
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TO
P
DU
RIN
G S
WIN
GIN
G
ST
OP
DU
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G O
NE
SW
ING
ST
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DU
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G O
NE
SW
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ST
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DU
RIN
G S
WIN
GIN
G
DU
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GIN
ITIA
LIZ
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ST
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DU
RIN
G S
WIN
GIN
G
AU
TO
SW
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FU
NC
TIO
N
ST
OP
SW
ING
ING
TE
MP
OR
AR
ILY
.(S
WIN
G M
OD
E I
S C
LEA
RE
D I
F S
WIN
G C
OM
MA
ND
IS
TR
AN
SM
ITT
ED
DU
RIN
G T
EM
PO
RA
RY
ST
OP
.)
ST
AR
T S
WIN
G A
GA
IN.
– 54 –
SERVICE CALL Q & A
While cooling, thecompressor sometimes stopsabruptly.
Q1Check whether frost stickson the heat exchanger of in-door unit or not.Wait for 3 – 4 minutes untilthe frost melts.
A1If cooling is performancewhen the room temperatureis low, frost may stick on theheat exchanger of indoorunit.
Cooling operation
The fan speed does notchange during adehumidifying operation.
Q2
Dehumidifying operation
The fan speed is always LOat a dehumidifying operation.A2
Cold air comes out during adehumidifying operation.Q3
To improve the dehumidi-fication efficiency, LO fanspeed operation isperformed. Therefore the airis cold. This is not a trouble.
A3
The operation does not stopeven by raising the roomtemperature setting of remotecontrol at a dehumidifyingoperation.
Q4At a dehumidifying operation,the actual room temperature iscompared with the room tem-perature setting when startingthe operation and the opera-tion is as follows.1) When actual room tem-
perature > room tempera-ture setting.The operation is accordingto the room temperaturesetting on the remote con-troller.
2) * When actual room tem-perature < room tempera-ture settingRegardless of the roomtemperature setting, thetemperature is automati-cally set slightly lower thanthe room temperature.
In this case, the status is as 2)and, therefore, the operationby the room temperaturecontrol is impossible. Turn offthe On / OFF switch, set theroom temperature to a newvalue and turn on the opera-tion by the On / Off switch.
A4
In the dehumidifying mode,the temperature set byremote controller is setslightly higher than the roomtemperature but theoperation starts.
Q5This is the status in 2) of(A4). The temperature is seta little lower than the roomtemperature to carry out adehumidifying operation asfar as possible.
A5
– 55 –
Air does not come out whenstarting a heating operation.Q6
It is not a trouble. The fan isstopped to avoid cold wind.A6
When starting the operation,the heat exchanger is coldand, therefore, the fan isstopped.Wait 2–3 minutes.
Heating operation
Air does not come outsometimes while in a heatingoperation.
Defrosting is on. Wait for 5–10 minutes unit the outdoorunit is defrosted.
A7
The fan speed is set to “HI”or “MED” but the heatingoperation starts with a LO fanspeed.
Q8The heating operationstarts with a LO fan speedfor 30 seconds. If the fanspeed is set to HI, theoperation starts with LO fanspeed, followed by MEDfan speed for 30 secondsand then by HI fan speed.
A8
Q7
The operation stops duringa heating operation while theroom temperature is set at“30”.
Q9If a heating operation is per-formed when the exteriortemperature is high, the op-eration may stop to protectthe equipment.
A9
The outdoor fan does notmove at a heating operationby the service switch.
It is not a trouble.When heating, the outdoorfan is stopped to avoid ex-cessive pressure rise.
A10Q10
Heating has been turned off by the mainoperation but the “Hot keep lamp” lights andthe outdoor unit operations.
Q11
Auto fresh defrosting
“Auto fresh defrosting” operates. Whenstopping the operation, whether the outdoorunit is frosted or not is checked and, if in theaffirmative, defrosting is performed beforestopping the operation.
A11
– 56 –
How is the automaticoperation mode determined?Q12
According to the roomtemperature, cooling ordehumidifying operation isautomatically selected.
Cooling:When room temperature isapprox. 27°C or higher
Dehumidifying:When room temperature isbetween approx. 23°C and27°C
Heating:When room temperature isapprox. 23°C or lower
A12
Automatic operation
At an automatic operation,changing the fan speedchange switch does not varythe fan speed.
Q13The fan speed is automati-cally determined.A13
The room temperaturecannot be controlled at anautomatic operation.
Q14It is automatically set asfollows.
At cooling: Set at 27°C
At dehumidifying:Set slightlylower than roomtemperature
The room temperaturesetting can be raised 3°C by“ ” or lowered 3°C by “ V ”.
A14When changing the roomtemperature setting in anautomatic operation, the nextautomatic operation mode isdetermined by new roomtemperature setting.If, for example, the roomtemperature setting is 2°Clowered for example, theoperation mode is as follows.
Cooling : When roomtemperature isapprox. 25°C orhigher
Dehumidifying :When roomtemperature isbetween approx.21°C and 25°C
Heating :When roomtemperature isapprox. 21°C orlower
V
– 57 –
There is a differencebetween the roomtemperature setting andactual room temperature.
Q15There may be a differencebetween the roomtemperature setting andactual room temperature onaccount of the roomstructure, air flow, etc.If there is a difference fromthe room temperature, adjustthe set temperature to keepliving space at a comfortabletemperature.
A15
Common, etc.
What will happen if the timesetting is changed while in atimer operation?
Q16A timer operation isperformed until the time afterchanging the time setting.
A16
In the “Automatic fan speed”mode, the indoor fanchanges to MED and LO fanspeed.
Q17It is not a trouble. The coldwind preventive functionoperates.
A17Set the temporary switchnormal.
In case of “ON” timer, the operation does notstart at a preprogrammed time but a littleearlier.
Q18
Nice temperature reservation
The “Nice temperature reservation” functions.The operation starts earlier so the roomtemperature will be as set at a programmedtime.The operation starts at most 60 minutes beforea preprogrammed time.
A18
The time to start an operation is irregularwhile preprogramming at the same time.Q19
The “Nice temperature reservation” operates.The starting time depends on the room load.A19
– 58 –
1) When the “Automatic”operation mode isselected, “Automatic”does not change bypressing the fan speedselect button.
2) The room temperaturesetting is not displayed.
3) Pressing the roomtemperature control buttondevelops transmit mark“ ” and sounds areceive sound but doesnot display the roomtemperature setting.
Q20
Wireless remote controller
The room temperaturesensing thermistor in theindoor unit detects the roomtemperature and, accordingto the particular temperature,automatically performs“Cooling” or “Dehumidifying”operation.The value indicated not at an“Automatic” but manualoperation is not the actualroom temperature but theroom temperature setting.
When the room temperaturesetting is “16”, pressing theroom temperature controlbutton “ V ” causes notransmission. At “32”,pressing “ ” causes notransmission either.
Q21The room temperature issettable within the range of16 - 32 and not beyond.
A21
The timer cannot be set.Q22
Is the current time set?The timer cannot be setunless the clock is adjustedcorrectly.
A22
V
The current time disap-pears soon.Q23
The current time disappearssoon and the timer setttingindication takes aprecedence.
A23When setting the current time,its indication blinks forapproximately 3 minutes.
1) When the operation modeis “Automatic”, the fanspeed is automaticallyfixed to “Automatic”.
2) At an “Automatic”operation, the roomtemperature setting is notdisplayed.The room temperature isautomatically set asfollows.
At cooling
Set at 27°C.
At dehumidifying
Set to a temperatureslightly lower than theroom temperature.
At heating
Set at 23°C.
3) At an “Automatic”operation, the roomtemperature setting is notdisplayed.However, every pressing“ ” or “ V ” buttonchanges 1°C within therange of:27±3°C when cooling,23±3°C when heating.
A20
V
– 59 –
In spite of timer “Preprogram”,the time setting isextinguished.
Q24Isn’t the time over the pre-programmed time?As soon as the prepro-grammed time is reached, thetime setting disappears.
A24
After selecting a“Dehumidifying” operationmode, the fan speed moderemains “LO” fan speed”.
Q25At a “Dehumidifying”operation, the “LO” fan speed”is forcibly selected.
A25
– 60 –
TROUBLE-SHOOTING
No operation at all.*1
*1 Before using the service switch,disengage and engage the plug. Do notoperate the remote controller.
Check the following parts and replace if faulty
Remove and check the continuity across.1) Current fuse
2) Varistor Check whether the appearance is blackish ornot.
The resistance must be infinite. *2
No cooling or heating
Stick relay abnormal
Power relay abnormal
YES
Check the continuity between contacts.3) Power switch
4) Thermal fuse fortherminal board
(96°C) Continuity across ➝ If there is no continuity,also check the fan motor and capacitor.
(102°C) Continuity across ➝ If there is no continuity,check the electric parts and replace if abnormal.
5) Thermal fuse forTerminal board
*2 Before checking the varistor, detach a terminal.
NO
Operates by setting the serviceswitch to forced cooling?
Return the service switch to"Normal".
Set the remote controller to anoperation status and press the ON/OFF button.
Is the level LO (approx. 0.5V)between driver IC701 pin 11 powerrelay and 0V?
NO
NO
Is the level LO (approx. 0.5V)between driver IC701 pin 10 stickrelay and 0V?
Is voltage normal between Blue andRed of the CN6? *3
NO
YESCompressor does not turn at LO.
YES
YES
Indoor fan motor orQ904 abnormal
Replace Stick relay
Replace Power relay
YES
Is the level LO (approx. 0.5V)between driver IC 701 pin 13
(Reversing valve relay) and 0V atheating operation?
NO
Reversing valverelay abnormal
Replace Reversingvalve relay
– 61 –
Is voltage normal (approx. 280 ~300V) at out put side of the DB201?
Check the circuit board ofcontrol board
YES
NO
Check the circuit board inside parts.When checking, carry out a selfdiagnosis by indoor indicator lamp.
Fan Speed
RAS-07GH4RAC-07GH4
*3
Replace faulty part*4 Wait for 3 minutes before forced
re-operation by the service switch.
CN6 BLUE-RED (V)
Cool Heat
20.8
15.6
12.5
11.0
20.8
17.9
15.0
15.0
HI
MED
LO
SLEEP MODE
RAS-09GH4RAC-09GH4
RAS-14GH4RAC-14GH4
Cool Heat
21.3
18.0
13.7
11.9
23.0
19.7
16.6
16.6
Cool Heat
27.0
20.9
15.8
13.0
28.4
23.6
19.3
19.3
– 62 –
CAUTION
Remote control is disabled while the Timer lamp is flashing.To check operation, turn off the power switch and turn it on again.
Timer-Lamp, break-down checking in blinking sign.Check the break-down factor from the frequency of timer-lamp blinking.
No. Mode of Timer-Lamp blinking Indication Factor Estimated Break-Down Part
4-way valve not workingInside temperature is low in heatingoperation time or insidetemperature is high in coolingoperation time.
(1) 4-way valve is not working.
(2) Heat-exchanger thermistor isin disconnection.
(Only heating time)
Force cooling operationUnit is under forcible operation orunder balancing after forcibleoperation.
Check force cooling switch atindoor electrical.
IC 401 Data read wronglyIn case that data read from IC401is wrong.
IC401 data is not in order.
Heat exchanger thermistor
error
Heat exchanger thermistor openor short-circuit detected.
(1) Thermistor
(2) Indoor - control circuit board.
Room thermistor errorRoom thermistor error open orshort-circuit detected.
(1) Thermistor
(2) Indoor - control circuit board.
1
2
3
4
5
6
( – – 0.5 second on, 0.5 second off.)
– – – – 15 times
– – – 14 times
– – – 13 times
– – – – – – – 2 times
– – – – – – – – 1 time5
sec.
5 sec.
5 sec.
5 sec.
5 sec.
!
DC Fan motor - over flow ofelectricityIndoor - DC Fan motor has overflow of electricity.
(1) Indoor - Fan is locked.
(2) Indoor - Fan motor damage.
(3) Indoor - control circuit board.
– – – 10 times5 sec.
– 63 –
PARTS LIST AND DIAGRAM
INDOOR UNIT MODEL : RAS-07GH4 / RAS-09GH4 / RAS-14GH4
1
12
16
15
20 23 25
11
10
7
20
19
27 24
1317
18
21
6
268
5
4
3
9
2
14
– 64 –
MODEL RAS-07GH4
1 HWRAS-25YH4 901 1 CABINET
2 HWRAS-25YH4 940 1 MOUNTING PLATE
3 PMRAS-07GH4 001 1 FAN MOTOR
4 HWRAS-25YH4 907 1 TANGENTIAL FAN
5 HWRAS-25YH4 908 1 P-BEARING ASSY
6 HWRAS-25YH4 910 1 FAN MOTOR BASE
7 PMRAS-07GH4 002 1 CYCLE ASSY
8 HWRAS-25YH4 909 1 BEARING COVER
9 HWRAS-25YH4 914 1 PIPE SUPPORT
10 HWRAS-25YH4 926 1 DRAIN PAN ASSY
11 HWRAS-25YH4 929 1 AUTO SWEEP MOTOR
13 HWRAS-25YH4 933 1 FRONT COVER ASSY
14 HWRAS-25YH4 936 1 FRONT PANEL
15 HWRAS-25YH4 937 1 AIR FILTER (R)
16 HWRAS-25YH4 938 1 AIR FILTER (L)
17 PMRAS-51CHA1 011 1 REMOTE CONTROL ASSEMBLY
18 PMRAS-10C3M 003 1 REMOTE CONTROL SUPPORT
19 PMRAS-10C8M 003 1 THERMISTOR SUPPORT
20 PMRAS-07CH2 012 1 THERMISTOR
21 HWRAS-25YH4 920 1 POWER SWITCH
22 PMRAS-07GH4 003 1 P.W.B (MAIN)
23 PMRAS-07GH4 004 1 P.W.B (POWER SW SUPPLY)
24 HWRAS-25YH4 916 1 TERMINAL BOARD (THERM-FUSE)
26 HWRAS-25YH4 939 1 LOW COVER
27 HWRAS-25YH4 917 1 TERMINAL BOARD
PART N0.RAS-07GH4
NO. Q’TY / UNIT PARTS NAME
– 65 –
MODEL RAS-09GH4
1 HWRAS-25YH4 901 1 CABINET
2 HWRAS-25YH4 940 1 MOUNTING PLATE
3 PMRAS-07GH4 001 1 FAN MOTOR
4 HWRAS-25YH4 907 1 TANGENTIAL FAN
5 HWRAS-25YH4 908 1 P-BEARING ASSY
6 HWRAS-25YH4 910 1 FAN MOTOR BASE
7 PMRAS-07GH4 002 1 CYCLE ASSY
8 HWRAS-25YH4 909 1 BEARING COVER
9 HWRAS-25YH4 914 1 PIPE SUPPORT
10 HWRAS-25YH4 926 1 DRAIN PAN ASSY
11 HWRAS-25YH4 929 1 AUTO SWEEP MOTOR
13 HWRAS-25YH4 933 1 FRONT COVER ASSY
14 HWRAS-25YH4 936 1 FRONT PANEL
15 HWRAS-25YH4 937 1 AIR FILTER (R)
16 HWRAS-25YH4 938 1 AIR FILTER (L)
17 PMRAS-51CHA1 011 1 REMOTE CONTROL ASSEMBLY
18 PMRAS-10C3M 003 1 REMOTE CONTROL SUPPORT
19 PMRAS-10C8M 003 1 THERMISTOR SUPPORT
20 PMRAS-07CH2 012 1 THERMISTOR
21 HWRAS-25YH4 920 1 POWER SWITCH
22 PMRAS-09GH4 001 1 P.W.B (MAIN)
23 PMRAS-07GH4 004 1 P.W.B (POWER SW SUPPLY)
24 HWRAS-25YH4 916 1 TERMINAL BOARD (FUSE)
26 HWRAS-25YH4 939 1 LOW COVER
27 HWRAS-25YH4 917 1 TERMINAL BOARD
PART N0.RAS-09GH4
NO. Q’TY / UNIT PARTS NAME
– 66 –
MODEL RAS-14GH4
1 HWRAS-25YH4 901 1 CABINET
2 HWRAS-25YH4 940 1 MOUNTING PLATE
3 PMRAS-07GH4 001 1 FAN MOTOR
4 HWRAS-25YH4 907 1 TANGENTIAL FAN
5 HWRAS-25YH4 908 1 P-BEARING ASSY
6 HWRAS-25YH4 910 1 FAN MOTOR BASE
7 PMRAS-07GH4 002 1 CYCLE ASSY
8 HWRAS-25YH4 909 1 BEARING COVER
9 HWRAS-25YH4 914 1 PIPE SUPPORT
10 HWRAS-25YH4 926 1 DRAIN PAN ASSY
11 HWRAS-25YH4 929 1 AUTO SWEEP MOTOR
13 HWRAS-25YH4 933 1 FRONT COVER ASSY
14 HWRAS-25YH4 936 1 FRONT PANEL
15 HWRAS-25YH4 937 1 AIR FILTER (R)
16 HWRAS-25YH4 938 1 AIR FILTER (L)
17 PMRAS-51CHA1 011 1 REMOTE CONTROL ASSEMBLY
18 PMRAS-10C3M 003 1 REMOTE CONTROL SUPPORT
19 PMRAS-10C8M 003 1 THERMISTOR SUPPORT
20 PMRAS-07CH2 012 1 THERMISTOR
21 HWRAS-25YH4 920 1 POWER SWITCH
22 PMRAS-14GH4 001 1 P.W.B (MAIN)
23 PMRAS-07GH4 004 1 P.W.B (POWER SW SUPPLY)
24 HWRAS-25YH4 916 1 TERMINAL BOARD (FUSE)
26 HWRAS-25YH4 939 1 LOW COVER
27 HWRAS-25YH4 917 1 TERMINAL BOARD (2P)
PART N0.RAS-14GH4
NO. Q’TY / UNIT PARTS NAME
– 67 –
7
10
8
9
11
5
4
15 14
17
18
12
16
6
50
30
31
52
5113
3
1
2
PARTS LIST AND DIAGRAM
INDOOR UNIT MODEL : RAC-07GH4 / RAC-09GH4
53
– 68 –
MODEL RAC-07GH4
2 PMRAC-07GH4 907 1 STRAINER (CAPILLARY)
3 PMRAC-07GH4 908 1 STRAINER (CONDENSOR)
4 PMRAC-05CV 901 1 FAN MOTOR SUPPORT
5 PMRAC-10C8 908 1 FAN MOTOR
6 PMRAC-25CNH2 902 1 PROPELLER FAN
7 PMRAC-07CH2 901 1 CABINET
9 PMRAC-05CV 906 1 SIDE PLATE (R)
10 PMRAC-05CV 907 1 SIDE PLATE (L)
11 PMRAC-05CV 908 1 HANDLE
12 PMRAC-09CHA1 903 1 D-GRILL
13 PMRAC-07GH4 901 1 COMPRESSOR
14 PMRA-08GF 904 3 COMPRESSOR RUBBER
15 PMRA-08GF 905 3 COMPRESSOR NUT
16 PMRAC-07GH4 902 1 CONDENSER
17 PMRAC-07GH4 904 1 2S-VALVE
18 PMRAC-07GH4 905 1 3S-VALVE
30 PMRAC-10C8 905 1 FAN MOTOR CAPACITOR
31 PMRAC-51CHA1 903 1 TERMINAL BOARD (4P)
50 PMRAC-07GH4 906 1 COMPRESSOR CAPACITOR
51 PMRAC-07GH4 903 1 REVERSING VALVE
52 PMRAC-07CH2 905 1 COIL (REVERSING VALVE)
53 PMRAC-07GH4 909 1 OVERLOAD PROTECTOR
PART N0.RAC-07GH4
NO. Q’TY / UNIT PARTS NAME
– 69 –
MODEL RAC-09GH4
1 PMRAC-09GH4 904 1 CHECKVALVE
2 PMRAC-07GH4 907 1 STRAINER (CAPILLARY)
3 PMRAC-09GH4 905 1 STRAINER (CONDENSOR)
4 PMRAC-05CV 901 1 FAN MOTOR SUPPORT
5 PMRAC-10C7 903 1 FAN MOTOR
6 PMRAC-25CNH2 902 1 PROPELLER FAN
7 PMRAC-09GH4 907 1 CABINET
9 PMRAC-05CV 906 1 SIDE PLATE (R)
10 PMRAC-05CV 907 1 SIDE PLATE (L)
11 PMRAC-05CV 908 1 HANDLE
12 PMRAC-09CHA1 903 1 D-GRILL
13 PMRAC-09GH4 901 1 COMPRESSOR
14 PMRA-08GF 904 3 COMPRESSOR RUBBER
15 PMRA-08GF 905 3 COMPRESSOR NUT
16 PMRAC-09GH4 902 1 CONDENSER
17 PMRAC-07GH4 904 1 2S-VALVE
18 PMRAC-07GH4 905 1 3S-VALVE
30 PMRAC-10C7 904 1 FAN MOTOR CAPACITOR
31 PMRAS-51CHA1 903 2 TERMINAL BOARD (4P)
50 PMRAC-09GH4 903 1 COMPRESSOR CAPACITOR
51 PMRAC-07GH4 903 1 REVERSING VALVE
52 PMRAC-07CH2 905 1 COIL (REVERSING VALVE)
53 PMRAC-09GH4 906 1 OVERLOAD PROTECTOR
PART N0.RAC-09GH4
NO. Q’TY / UNIT PARTS NAME
– 70 –
5
41
8
9
157
6
18
17
14 16
10
1112
22
3
323
20
2421
2
53
PARTS LIST AND DIAGRAM
OUTDOOR UNIT MODEL : RAC-14GH4
– 71 –
MODEL RAC-14GH4
1 KPNT1 001 3 PUSH NUT
2 PMRAC-14GH4 901 1 COMPRESSOR
3 RAC-2226HV 805 3 COMPRESSOR RUBBER
4 PMRAC-25NH4 904 1 VALVE (2S)
5 PMRAC-25NH4 905 1 VALVE (3S)
6 PMRAC-25NH4 901 1 CONDENSOR
7 PMRAC-51CA1 905 1 FAN MOTOR SUPPORT
8 PMRAC-18C7 901 1 FAN MOTOR
9 PMRAC-25CNH2 902 1 PROPELLER FAN
10 PMRAC-51CHA1 903 1 TERMINAL BOARD (4P)
11 PMRAC-09GH4 903 1 COMPRESSOR CAPACITOR
12 PMRAC-10C7 904 1 FAN MOTOR CAPACITOR
13 PMRAC-14GH4 902 1 HANDLE
14 PMRAC-51CA1 901 1 CABINET
15 PMRAC-09CHA1 903 1 D-GRILL
16 PMRAC-14GH4 905 1 SIDE PLATE (R)
18 PMRAC-51CA1 909 1 TOP COVER
21 PMRAC-07GH4 903 1 REVERSING VALVE
22 PMRAC-14GH4 903 1 STRAINER (CAPILLARY)
23 PMRAC-14GH4 904 1 STRAINER (CONDENSOR)
24 PMRAC-09GH4 904 1 CHECKVALVE
53 PMRAC-14GH4 906 1 OVERLOAD PROTECTOR
PART N0.RAC-14GH4
NO. Q’TY / UNIT PARTS NAME
HITACHI
PM NO. 0000EPrinted in Malaysia
RAS-07GH4 / RAC-07GH4RAS-09GH4 / RAC-09GH4RAS-14GH4 / RAC-14GH4
