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CAUTIONBEFORE SERVICING THE UNIT,READ THE “SAFETYPRECAUTIONS” IN THIS MANUAL.
MODEL:GR-349/389SQF
REFRIGERATORSERVICE MANUAL
SAFETY PRECAUTIONS ....................................................................................................................................................... 2
SERVICING PRECAUTIONS.................................................................................................................................................. 3
SPECIFICATIONS................................................................................................................................................................... 4
PARTS IDENTIFICATION....................................................................................................................................................... 5
REPLACEMENT OF DOOR OPENING TYPE ....................................................................................................................... 6
DISASSEMBLY.................................................................................................................................................................... 7-8
DOOR................................................................................................................................................................................... 7
DOOR SWITCH.................................................................................................................................................................... 7
FAN AND FAN MOTOR........................................................................................................................................................ 7
DEF' CONTROL ASM .......................................................................................................................................................... 8
LAMP.................................................................................................................................................................................... 8
ADJUSTMENT................................................................................................................................................................... 9-10
COMPRESSOR.................................................................................................................................................................... 9
PTC-STARTER..................................................................................................................................................................... 9
OLP (OVER LOAD PROTECTOR) .................................................................................................................................... 10
CIRCUIT DIAGRAM.............................................................................................................................................................. 10
TROUBLESHOOTING..................................................................................................................................................... 11-16
COMPRESSOR AND ELECTRIC COMPONENTS............................................................................................................ 11
PTC AND OLP.................................................................................................................................................................... 12
ANOTHER ELECTRIC COMPONENT............................................................................................................................... 13
SERVICE DIAGNOSIS CHART.......................................................................................................................................... 14
REFRIGERATING CYCLE ............................................................................................................................................ 15-16
MICOM FUNCTION & PCB CIRCUIT EXPLANATION................................................................................................... 17-33
EXPLODED VIEW .......................................................................................................................................................... 34-35
REPLACEMENT PARTS LIST ............................................................................................................................................ 36-
Please read the following instructions before servicing yourrefrigerator.
1. Check the set for electric losses.
2. Unplug prior to servcing to prevent electric shock.
3. Whenever testing with power on, wear rubber gloves toprevent electric shock.
4. If you use any kind of appliance, check regular current,voltage and capacity.
5. Don't touch metal products in the freezer with wethands. This may cause frostbite.
6. Prevent water from following onto electric elements inthe mechanical parts.
7. When standing up after having checked the lowersection of the refrigerator with the upper door open,move with care to avoid hitting the upper door.
8. When tilting the set, remove any materials on the set,especially the thin plates(ex. Glass shelf or books.)
9. When servicing the evaporator, wear cotton gloves.This is to prevent injuries from the sharp evaporatorfins.
10. Leave the disassembly of the refrigerating cycle to aspecialized service center. The gas inside the circuitmay pollute the environment.
SAFETY PRECAUTIONS
CONTENTS
- 2 -
Air Recharging in CompressorTest the refrigeration by connecting it electrically beforerefilling operation. It is necessary to ascertain the functionof the motor-compressor and identify the defectsimmediately. If defects have been found, empty the oldsystem of possible R134a residue by breaking off the endof the extension piece at its narrow point. (Figure 1)Replace the filter and any damaged components. Unsolderand pull off the piece remaining inside the service tube andthen attach an complete extension with male Hansen andat last, solder it to the same tube again. (Figure 2)
It is necessary to execute the soldering operation withvalve open so that the fumes caused by oil residue cancome out freely without blowholes between two tubesduring the heating of the point to be soldered.The extension fitted with the male Hansen is connected tothe female fitting of the vacuum pump tube. (Figure 3)
Air evacuating from the system begins as soon as thepump starts. The refrigeration system must be kept undervacuum until the reading on the low-pressure gaugeindicates vacuum (0 absolute, -1 atm., -760 mm hg) in anycase it is advisable to keep the pump running for about 30minutes. (Figure 3)In case that a considerable leakage occurs it will benecessary to stop the vaccum pump and to add a smallquantity of Freon to the system, if vacuum should not beobtained (pressure gauge can't fall to 1 atmosphere), startthe refrigeration unit and find the leakage with the specialleak-finder. When the defective soldering point is visible,re-do it after opening the extension tube valve andreestablishing the normal outside pressure inside thegroup.Because the melted alloy is sucked into the tubes andblock them, the pressure must be rebalanced whenvacuum is in the system in soldering. As soon as the
vacuum operation is over, add the quantity in grams ofR134a to the refrigeration system. Remember that everysystem has an exact quantity of R134a with a tolerance of±5 grams that can be added. (Figure 4)
Before performing this operation (if the vacuum pump andrefilling cylinder are connected), make sure that the valveplaced between the vacuum pump and the refilling tube areclosed in order to keep the Freon for addition to the system.(Figure 5)
In addition, check the graduated scale on the cylinder forthe quantity of R134a to be added, for example, if we have750 grams of Freon in the cylinder and must add 165grams to the group, this amount will be reached when R-134a has dropped to 585 grams, remembering that theindicator shows a lower limit of meniscus. Do this afterchoosing the scale corresponding to the gas pressuredifferent scales reported as the same gas pressureindicated by the pressure gauge on the top of the column.To make R134a flow into the system, open the valveplaced at the base of the cylinder and connected to thefilling tube. The amount of Freon cannot be added to thesystem all at once because it may cause a blocking ofthe motor-compressor. Therefore, proceed by adding theoriginal quantity of about 20-30 grams and close the valveimmediately.The pressure rises and the motor compressor must startsucking the gas and lowering the pressure again.Regulate the valve again, in the safe way until reaching thequantity of R134a established for the system beingcharged. When the system is running, the suction pressuremust be stabilized between 0.30 to 0.6 atmosphere.
POINT TO BEBROKEN CHARGE TUBE
EXTENSION
FEMALEHANSEN
MALE HANSEN
SOLDERING POINTSERVICE TUBE EXTENSION
Figure 1 Figure 2
TO THE VACUUMPUMP
PRESSUREGAUGE
Figure 3
TO THE R134a CYLINDER
TO THE REFRIGERATIONSYSTEM
Figure 4
FILLING ORCHARGE TUBE
VALVE TO BE OPENEDWHEN REFILLING
VALVE TO BE CLOSEDAFTER VACUUM
TO THE VACUUM PUMP
TO THE REFRIGERATIONSYSTEM
TO THE CHARGE �CYLINDER
Figure 5
SERVICING PRECAUTIONS
- 3 -
1.Ref. No:
2.Ref. No:
ITEMS SPECIFICATIONS
DIMENSIONS (mm) 595(W)X626(D)X1880(H)
NET WEIGHT (kg) 74
COOLING SYSTEM Fan Cooling
REFRIGERATOR Knob Dial
FREEZER Button
Full AutomaticDEFROSTING SYSTEM
Heater Defrost
DOOR FINISH Pre-Coated Metal
OUT CASE Painted Steel Sheet
INNER CASE ABS
INSULATION Polyurethane Foam
DEFROSTING DEVICE Heater, Sheath
REFRIGERANT R134a(135g)
LUBRICATION OIL FREOL @ 22G(210 cc)
TEMPERATURECONTROL
ITEMS SPECIFICATIONS
Transparent Shelf(3 EA)
REFRIGERATOR Vegetable Container(2 EA)
COMPARTMENT Vegetable Container Cover(1 EA)
Chilled Container(1 EA)*
Dairy Pocket Cover(1 EA)
Egg Tray(2 EA)DOOR POCKET
Little Pocket(5 EA)
Bottle Pocket(1 EA)
FREEZER Tray Drawer(4 EA)
COMPARTMENT Ice Tray(1 EA)
COMPRESSOR PTC Starting Type
EVAPORATOR Fin Tube Type
CONDENSER Side & Wire Condenser
SPECIFICATIONS
- 4 -
* Optional Parts
ITEMS SPECIFICATIONS
DIMENSIONS (mm) 595(W)X626(D)X1710(H)
NET WEIGHT (kg) 69
COOLING SYSTEM Fan Cooling
REFRIGERATOR Knob Dial
FREEZER Button
Full AutomaticDEFROSTING SYSTEM
Heater Defrost
DOOR FINISH Pre-Coated Metal
OUT CASE Painted Steel Sheet
INNER CASE ABS
INSULATION Polyurethane Foam
DEFROSTING DEVICE Heater, Sheath
REFRIGERANT R134a(135g)
LUBRICATION OIL FREOL @ 22G(210 cc)
TEMPERATURECONTROL
ITEMS SPECIFICATIONS
Transparent Shelf(2 EA)
REFRIGERATOR Vegetable Container(2 EA)
COMPARTMENT Vegetable Container Cover(1 EA)
Chilled Container(1 EA)*
Dairy Pocket Cover(1 EA)
Egg Tray(1 EA)DOOR POCKET
Little Pocket(3 EA)
Bottle Pocket(1 EA)
FREEZER Tray Drawer(4 EA)
COMPARTMENT Ice Tray(1 EA)
COMPRESSOR PTC Starting Type
EVAPORATOR Fin Tube Type
CONDENSER Side & Wire Condenser
* Optional Parts
or Vinyl Coated Metal
or Vinyl Coated Metal
GC-389
GC-349
NOTE : This is a basic model. The shape of refrigerator is subject to change.
PARTS IDENTIFICATION
- 5 -
RotatableDoor Basket(3 or 5)
Utility Corner(movable)
Bottle Holder
2L Bottle Door Basket
Leveling Screw
Egg Tray(1 or 2)
Freezer TemperatureControl
RemovableGlass Shelf(2 or 3)
Lamp
Multi-air Flow Duct
Fresh Meat Keeper(Optional)
RefrigeratorTemperature �Control
Vegetable DrawerUsed to keep fruits
and vegetables, etc.fresh and crisp.
Ice Cube Tray
Freezer Compartment
Removable Plinth
1. PRECAUTION1) Before reversing the door, first of all, you should take
out food and accessories like shelves or trays which arenot fixed in the refrigerator.
2) Use Torque Wrench or Spanner to fix or remove thebolt.
3) Don't lay the refrigerator down in working with it, it willcause to get out of order.
4) Be careful not to drop the door in disassembling orassembling the freezer or the refrigerator door.
2. HOW TO REVERSE THE DOORS1) Seperate screw ➋ and remove lower cover ➊ and move
cap lower cover ➌. And, seperate screw ➍, lower hinge➎, and remove pin ➏. Separating the freezer door inopening, and more the position the cap ➐. Move the position of bracket door ➑ and screw ➒.
2) Separating screw and remove the center hinge and the refrigerator door . Move the position of cap .Move the position of bracket door and screw .
3) Move the position of upper hinge pin , and cap .Assemble the refrigerator door . Assemble centerhinge and bolt . Assemble freezer door .Assemble the lower hinge ➎, bolt ➍ and lower cover ➊.
REPLACEMENT OF DOOR OPENING TYPE
- 6 -
21
7
2
3
1
214
6
5
8
9
14
15
12
11
5
4
21
10
21
12
13
10
11
16
17
1110
12
16 17
13
15
12
11 10 21
14
Note: Reversing the doors is not covered by the warranty.
1 DOOR● Freezer Door1) Loosen 2 screws and pull the Lower Cover. 2) Loosen hexagonal bolts fixing the lower hinge to the
body to remove the freezer door only.
3) Pull out the Door Gasket to remover from the Door Foam Assy, F.
● Refrigerator Door1) Loosen hexagonal bolts fixing the center hinge(Hinge,C)
to the body to remove the refrigerator door only.
2) Pull out the Door Gasket to remove from the Door Foam Assy, R.
2 DOOR SWITCH1) Loosen four screws in upper part and disconnect top
cover.2) Disconnect Lead Wire from switch.3) Disengage hook behind the switch by pressing it with
hands.
3 REFRIGERATOR ROOM LAMP1) Remove the Cover Lamp, R by pulling with a 'Ð' type
driver.2) Remove the Lamp by turning.
Bolt
Lower Hinge
Figure 6
GASKET
Figure 7
Hinge, C
Bolt
Figure 8
Figure 9
DISASSEMBLY
- 7 -
Figure 10
4 FAN AND FAN MOTOR1) Remove freezer drawers.2) Remove two cap, screws and loosen two screws in Grille Fan.3) Pull out the Grille Fan and Shroud, F.4) Disconnect the housing of lead wire.5) Separate the Fan Assy.6) Losse 2 screw fixed to the Bracket.7) Pull out Shroud, F remove the Fan Motor Assy.8) Separate the Motor Bracket and Rubber.
5 DEFROST CONTROL ASSYDefrost Control Assy consists of Thermistor and Fuse, Melting.Thermistor functions to defrost automatically and it is attached tometal side of the Evaporator and senses temperature.Fuse, Melting is a kind of safety device for preventing overheatingof the Heater when defrosting. At the temperature of 72¡C, it stops the emission of heat from theHeater.1) Pull out the Shroud, F after removing the Grille.2) Separate the connector connected with the Defrost Control
Assy and replace new one.
6 DAMPER CONTROL1) Remove the Cover Lamp, R and loosen 2 screw.2) Pull the Control Box, R and separate the lead wire
housing.3) Remove the Cover Lamp, R.4) Separate the Insulation Multi Duct and Control Box, R.5) Disassemble the Knob.6) Separate the Damper Control and Control Box, R.7) Separate the Damper Control and Resistor.8) Disconnect the lead wire.
7 HEATER, SHEATHIn this refrigerator, Heater, Sheath is used for defrostingheater. During heating, the temperature of heater risesabout 300~500¡C. Therefore, be careful not to burn whileservicing.1) After removing the Grille and Shroud, separate the
Heater, Sheath by disconnecting the connectors.2) Exchanged Heater, Sheath and connected the housing.
REFRIGERATOR ROOM LAMP
GUIDE FANFAN
SHROUDFAN MOTOR
GRILLE
Figure 13
Figure 14
Figure 11
Figure 12
- 8 -
Heater, Sheath
Fuse, Melting
Thermistor
Figure 14Figure
A
B12 B
ANote: B has been only applied to europe area.
Fuse, Melting
ThermistorHeater, Sheath
1 COMPRESSOR1) Role
The compressor intakes low temperature and low pressuregas evaporated from Evaporator of the Refrigerator, andcondenses this gas to high temperature and high pressuregas, and then plays delivering role to Condenser.
2) CompositionThe Compressor is Composed of Compressor Apparatuscompressing gas, Compressor Motor moving CompressorApparatus and Case protecting Compressor Apparatusand Motor. There are PTC-Starter, and Over LoadProtector (OLP) in the Compressor outside. On the otherhand, because the Compressor consists of 1/1000mm processingprecision components and is sealed after production in absenceof dust or humidity, deal and repair with care.
3) Note for Usage(1) Be careful not to allow over-voltage and over-current.(2) No Strike
If applying forcible power or strike (dropping or carelessdealing), poor operation and noise may occur.
(3) Use proper electric components appropriate to theCompressor.
(4) Note to Keep Compressor.If Compressor gets wet in the rain and rust in the pin ofHermetic Terminal, the result may be poor operationand poor contact may cause.
(5) Be careful that dust, humidity, and flux welding don'tinflow in the Compressor inside in replacing theCompressor. Dust, humidity, and flux due to weldingwhich inflows to Cylinder may cause lockage and noise.
2 PTC-STARTER
1) Composition of PTC-Starter(1) PTC (Positive Temperature Coefficient) is a no-contact
semiconductor starting device which uses ceramicmaterial and this material consists of BaTiO3.
(2) The higher the temperature is, the higher becomes theresistance value. These features are used as startingdevice for the Motor.
2) Role of PTC-Starter(1) PTC is attached to Hermetic Compressor used for
Refrigerator, Show Case and starts Motor.(2) Compressor for household refrigerator applies to
single-phase induction Motor.For normal operation of the single-phase inductionmotor, in the starting operation flows in both main coiland sub-coil. After the starting is over, the current insubcoil is cut off. The proper features of PTC play allthe above roles. So, PTC is used as a motor startingdevice.
3) PTC-Applied Circuit Diagram● According to Starting Method for the Motor
4) Motor Restarting and PTC Cooling(1) For restarting after power off during normal
Compressor Motor operation, plug the power cord after5 min. for pressure balance of Refrigerating Cycle andPTC cooling.
(2) During normal operation of the Compressor Motor, PTCelements generate heat continuously. Therefore, if PTC isn't cooled for a while after the power has beenshut off, Motor can't operate again.
5) Relation of PTC-Starter and OLP(1) If the power is off during operation of Compressor and
the power is on before the PTC is cooled, (instant shut-off within 2 min. or reconnect a power plug due tomisconnecting), the PTC isn't cooled and a resistancevalue grows. As a result, current can't flow to the sub-coil and the Motor can't operate and the OLP operatesby flowing over current in only in the main-coil.
(2) While the OLP repeats on and off operation about 3-5times, PTC is cooled and Compressor Motor performsnormal operation.If OLP doesn't operate when PTC is not cooled,Compressor Motor is worn away and causes circuit-short and fire. Therefore, use a properly fixed OLPwithout fail.
6) Note to Use PTC-Starter(1) Be careful not to allow over-voltage and over-current.(2) No Strike
Don't apply a forcible power or strike.(3) Keep apart from any liquid.
If liquid such as oil or water away enter the PTC, PTC materials it may break due to insulationbreakdown of the material itself.
(4) Don't change PTC at your convenience.Don't disassemble PTC and mold. If the exterior to thePTC-starter is damaged, resistance value is altered andit may cause poor starting of the compressor motormay cause.
(5) Use a properly fixed PTC.
PTC STARTER HERMETICTERMINAL
COMPRESSORMOTOR
C
MS M
3 6
5
S
PTC
OVERLOAD PROTECTOR(O.L.P)
RSIRFigure 19
ADJUSTMENT
- 9 -
3 OLP (OVER LOAD PROTECTOR)1) Definition of OLP(1) OLP (OVER LOAD PROTECTOR) is attached to the
Hermetic Compressor and protects the Motor by cuttingoff current in Compressor Motor in case of over-risingtemperature by Bimetal in the OLP.
(2) When over-voltage flows to Compressor motor, theBimetal works by heating the heater inside the OLP, and the OLP protects Motor by cutting off current whichflows to the Compressor Motor.
2) Role of the OLP(1) The OLP is attached to the Hermetic Compressor used
for the Refrigerator and Show Case and prevents theMotor Coil from being started in the Compressor.
(2) Do not turn the Adjust Screw of the OLP in any way fornormal operation of the OLP.(Composition and connection Diagram of OLP)
CIRCUIT DIAGRAM
CONTACTING�POINT
COVER
BIMETAL
CONTACTING�POINT
HEATER
TERMINALS
ADJUST�SCREW
HEATER
BIMETAL
Figure 20
NOTE : 1. This is a basic diagram and specifications vary in different localities.
- 10 -
3854JS8003Y
CNL
3
4
6
5
2
S
BK
PK
RD
BLBLBL
BK
BL
CAPACITORPART
EARTH PART
COMPRESSOR
P.T.CSTARTER
RUNNING
BLBL
BL
BK
PR
GN/YL
POWERSUPPLYCORD
RT-SENSOR
YLBL
DEF-SENSOR
F-SENSOR
DOOR OPENPERCEPTION
BLBLBOBOGYRD
GY PR BL YL RD BN WH WHBO
YL BK GY BN
BK
OVE
RLO
ADPR
OTE
CTO
R
STAR
TING
COO
LING
FAN
MO
TOR
DOO
R SW
-RR-
LAM
P
M
C
M
FAN
MO
TOR
PWB ASSY, MAIN
DISPLAY CONTROL P.W.B
CIRCUIT DIAGRAM
1 2 3 4 5 6 7 8 9
GY
A
PR BL YL RD BN WH WHBO1 2 3 4 5 6 7 8 9
¥ THE PLUG TYPE,CAPACITOR PART,COMPRESSOR EARTHPART ON CIRCUITDIAGRAM ARE SUBJECTTO CHANGE IN DIFFERENTLOCALITIES AND ACCORDANCEWITH MODEL TYPE
¥ WHEN STARTING CAPACITORIS NOT USED, NO.3,4 OF PTCSTART IS CONNECTEDINTERNALLY
M
BK:BLACK
YL:YELLOW
SB:SKY BLUE
BN:BROWN
GN:GREEN
PK :PINK
RD:RED
BL :BLUE
GN/YL:GREEN/YELLOW
BO:BRIGHT ORANGE
PR:PURPLE GY:GRAY
WH/BK:WHITE/BLACK
WH:WHITE
B
9 8 7 6 4 3 2 15BL YL BK GY BN
BL
FUSE
-M( 7
2ûC)
SHEA
TH H
EATE
R
GY
RDB
A
3580JS8001B
Circuit 1 2.Ref. Circuit 2
2.Circuit 2 has been only applied to C4 C5 B3 power cord type.
1 COMPRESSOR AND ELECTRIC COMPONENTS
TROUBLESHOOTING (Mechanical Part)
- 11 -
1��
2
3
4
5
2
5
5
3
4
5
5
1
43
YES
YES
YES
NO
YES
YES
NO
NO
5
YES
NO
YES
PowerSource.
Remove the PTC-Starter from theCompressor andmeasure the voltagebetween Terminal C ofCompressor andTerminals 5 or 6 of PTC.
No Voltage.
(Rating Voltage±10%)?
Replace OLP.
Reconnect.
ReplacePTC-Starter.
Replace OLP.
O.K.
Check connectioncondition.
OLP disconnected?
Advise the customerto use a regularTrans.
Replace Compressor.
OLP works within30 sec. in forcibleOLP operation byturning instant poweron and off.
Components start inthe voltage of RatingVoltage ±10% below.
Applied voltage isn'tin the range of RatingVoltage ±10%.
Check the resistanceamong M-C, S-C andM-S in MotorCompressor.
Check the resistance oftwo terminals in PTC-Starter.
Check if applyinga regular OLP.
Measure minimumstarting voltage after 5min. for balancing cyclepressure and cooling thePTC.
Check theresistance ofMotorCompressor.
Check theresistance ofPTC-Starter.
Check OLP.
Checkstarting state.
2 PTC AND OLP
- 12 -
YES
NO
6 5
4
3
Normal operation ofCompressor isimpossible or poor.
Separate the PTC-Starterfrom Compressor andmeasure the resistancebetween No. 5 and 6 (onlyRSIR type) or No. 4 and 5 ofPTC-Starter with a Tester orWhistone Bridge.(Figure 21)
Separate the OLP from theCompressor and check theresistance value betweentwo terminals of OLP witha Tester. (Figure 22)
Observation value is220V/50Hz : 22§ ±30%115V/60Hz : 6.8§ ±30%240V/50Hz : 33§ ±30%127, 220V/60Hz : 22§±30%
The resistance value is 0or serveral hundreds § .
The value is ¡ .̃
Check anotherelectric components.
Replace OLP.
Check anotherelectriccomponents.
ReplacePTC-Starter.
Figure 21 Figure 22
3 ANOTHER ELECTRIC COMPONENTS
- 13 -
▼ Cooling is impossible
Compressordoesn't run.
Running state ofCompressor is poor.
Check a startingvoltage.
Check if current flows tothe followingcomponents.
a. Thermistor
b. Starting devices
c. OLP
d. Compressor coil
e. Circuit Parts
Low voltage.
Poor contacting.
Shorted or broken.
Poor contactingor shorted.
Coil shorted.
Poor contactingor shorted.
Poor contactingand broken.
Shorted.
Lack of capacity.
Coil of motorCompressor.
Replacethe compressor.
Replaceeach component.
Raise the voltage.
Replaceeach component.
Cause.
Check if current flowsto starting devices.
Check current flowingin sub-coil ofCompressor.
Check capacity of OLP.
The items describedabove are normal.
▼ Cooling ability is poor
Fan motordoesn't run.
Much frost are stickedto the EVAPORATOR.
Poor contacting.
Coil is shorted.
Shorted.
Replacethe Heater, Sheath
Replaceeach component.
Replaceeach component.
Check current flowingin SWITCH, DOOR.
Check current flowing in theMOTOR[MECH], FAN.
Check current flowingof the followingcomponents.¥ THERMISTOR¥ FUSE, MELTING
Check current flowingof the followingcomponents. ¥ HEATER, SHEATH
4 SERVICE DIAGNOSIS CHART
COMPLAINT POINTS TO BE CHECKED REMEDY
Cooling is ¥ Is the power cord unplugged from the outlet? ¥ Plug to the outlet.impossible. ¥ Check if the power switch is set to OFF. ¥ Set the switch to ON.
¥ Check if the fuse of power switch is shorted. ¥ Replace a regular fuse.¥ Measure the voltage of power outlet. ¥ If voltage is low, wire newly.
Cooling ability ¥ Check if the set is placed close to wall. ¥ Place the set with the space of about 10cm.is poor. ¥ Check if the set is placed close to stove, gas ¥ Place the set apart from these heat
¥ cooker and direct rays. ¥ appliances.¥ Is the ambient temperature high or ¥ Make the ambient temperature below.¥ the room door closed?¥ Check if put in is hot. ¥ Put in foods after cooled down.¥ Did you open the door of the set too often ¥ Don't open the door too often and close¥ or check if the door is closed up? ¥ it firmly.¥ Check if the Damper Control is set to "cold-position". ¥ Set the control to mid-position.
Foods in the ¥ Is foods placed in cooling air outlet? ¥ Place foods in high temperature section.Refrigerator ¥ (Front Part)are frozen. ¥ Check if the control is set to "cold-position". ¥ Set the control to "mid-position".
¥ Is the ambient temperature below 5¡C? ¥ Set the control to "warm-position".
Dew or ice ¥ Is liquid food stored? ¥ Seal up liquid foods with wrap.forms in the ¥ Check if put in is hot. ¥ Put in foods after cooled down.chamber of ¥ Did you open the door of the set too ¥ Don't open the door too often and closethe set. ¥ often or check if the door is closed up. ¥ it firmly.
Dew forms ¥ Check if ambient temperature and humidity ¥ Wipe dew with a dry cloth. This occurrencein the Exterior Case. of surroumcling air are high. ¥ is solved naturally in low temperature and humidity.
¥ Is there gap in the door packed? ¥ Fill up the gap.
Abnormal ¥ Are the set positioned in a firm and even place? ¥ Adjust the Adjust Screw, and positionnoise generates. ¥ in the firm place.
¥ Are any unnecessary objects set ¥ Remove the objects.¥ in the back side of the set?¥ Check if the Tray Drip is not firmly fixed. ¥ Fix it firmly on the original position.¥ Check if the cover of mechanical room ¥ Place the cover at the original position.¥ in below and front side is taken out.
To close the door ¥ Check if the door packing is dirty ¥ Clean the door packing.is not handy. ¥ with filth such as juice.
¥ Is the set positioned in a firm and even place? ¥ Position in the firm place and adjust the¥ Adjust Screw.
¥ Is too much food putted in the set? ¥ Keep foods not to reach the door.
Ice and foods ¥ Check if the inside of the set is dirty. ¥ Clean the inside of the set.smell unpleasant. ¥ Did you keep smelly foods without wrapping? ¥ Wrap smelly foods.
¥ It smells of plastic. ¥ The new products smells of plastic, but it is¥ eliminated after 1-2 weeks.
● In addition to the items described left, refer to the followings to solve the complaint.
Check if dew forms inthe Freezer.
Replace theComponents ofdefrosting circuit.
Check RefrigeratingCycle.
Check the Damper Control
Defrostingis poor.
The cycleis faulty.
Repair the cycle.
Replace the Damper Control
The operation ofthe DamperControl is poor.
- 14 -
5 REFRIGERATING CYCLE
▼ Troubleshooting Chart
▼ Leakage Detection
● Observe discharging point of refrigerant which may be in the oil discharging part in the compressor and hole of evaporator.
- 15 -
YES
YES
Whether Compressorruns or not.
Whether frostforms or not inEvaporator.
Observe the dischargedamount of Refrigerant.
Inject Refrigerant to Compressorand check cooling operation.
Clogged by dust. Gas leakage.
FaultyCompressor.
Moisture Clog.
Whether oilleaks or not.
Frost formed normally
Normal amount
No or much amount
(Check the leakage point)Frost formed normally
No frostor formsin inlet only
Check Compressor
PARTIAL Freezer room and Low flowing sound of A little high ¥ A little RefrigerantLEAKAGE Refrigerator Refrigerant is heard and more than ¥ discharges.
don't cool frost forms in inlet only ambient ¥ Normal cooling is possiblenormally. temperature. ¥ when injecting of Refrigerant
¥ the regular amount.
WHOLE Freezer room and Flowing sound of Refrigerant Equal to ambient ¥ No discharging of Refrigerant.LEAKAGE Refrigerator is not heard and frost isn't temperature. ¥ Normal cooling is possible
don't cool formed. ¥ when injecting of Refrigerantnormally. ¥ the regular amount.
PARTIAL Freeze room and Flowing sound of Refrigerant A little high ¥ Normal discharging ofCLOG Refrigerator is heard and frost forms more than ¥ refrigerant.
don't cool in inlet only. ambient ¥ The capillary tube is faulty.normally. temperature.
WHOLE Freezer room and Flowing sound of Refrigerant Equal to ambient ¥ Normal discharging ofCLOG Refrigerator is not heard and frost isn't temperature. ¥ Refrigerant.
don't cool. formed.
MOISTURE Cooling operation Flowing sound of Refrigerant Low than ¥ Cooling operation restartsCLOG stops periodically. is not heard and frost melts. ambient ¥ when heating the inlet of
temperature ¥ capillary tube.
COMP- Freezer and Low flowing sound of A little high ¥ The pressure of highRESSION Refrigerator Refrigerant is heard and than ambient ¥ pressure part in
don't cool. frost forms in inlet only. temperature. ¥ compressor is low.
NO COMP- No compressing Flowing sound of Refrigerant Equal to ambient ¥ No pressure of high pressureRESSION operation. is not heard and no frost. temperature. ¥ part in the compressor.
CAUSETEMPERATURE
OF THECOMPRESSOR
REMARKSSTATE OFTHE SET
STATE OF THEEVAPORATOR
LEA
KA
GE
CLO
GG
ED
BY
DU
ST
DE
FE
CT
IVE
CO
MP
RE
SS
ION
NO. ITEMS CONTENTS AND SPECIFICATIONS REMARKS
WELDING (1) H 30ROD (1) ¥ Chemical Ingredients ¥ Recommend H34 containing 34% Ag in the
(1) ¥ Ag: 30%, Cu: 27%, Zn: 23%, Cd: 20% ¥ Service Center.(1) ¥ Brazing Temperature: 710~840¡C(2) Bcup-2(1) ¥ Chemical Ingredients(1) ¥ Cu: About 93%(1) ¥ P: 6.8~7.5%(1) ¥ The rest: within 0.2%(1) ¥ Brazing Temperature: 735~840¡C
FLUX (1) ¥ Ingredients and how to make ¥ Make amount for only day. (1 )(1) ¥¥Borax 30% ¥ Holding period: 1 day(1) ¥¥Borax 35% ¥ Close the cover of container to prevent dust(1) ¥ Fluoridation kalium: 35% ¥ putting in the FLUX.(1) ¥ Water: 4% ¥ Keep it in a stainless steel container.(1) ¥ Mix the above ingredients and boil until(1) ¥ they are transformed into liquid.
DRIER (1) Assemble the drier within 30min. ¥ Don't keep the drier in a outdoors becauseASM (1) after unpacking. ¥ humidity damages to it.
(2) Keep the unpacked drier at the temperatureof 80~100¡C.
VACUUM (1) When measuring with pirant Vacuum ¥ Apply M/C Vacuum Gauge without fail.(1 )gauge the charging M/C, vacuum ¥ Perform vacuum operation until a proper(1 )degree is within 1 Torr. ¥ vacuum degree is built up.(2) If the vacuum degree of the cycle inside is ¥ If a proper vacuum degree isn't built up,¥ (2) 10 Torr. below for low pressure and 20 Torr. ¥ check the leakage from(2) for high pressure, it says no vacuum ¥ the Cycle Pipe line part and(2) leakage state. ¥ Quick Coupler Connecting part.(3) Vacuum degree of vacuum pump must be(3) 0.05 Torr. below after 5 min.(4) Vacuum degree must be same to the
value described item (2) above for more than 20 min.
(1) The pressure of dry air must be morehan 12~16kg/cm2
(2) Temperature must be more than-20~ -70¡C.
(3) Keep the pressure at 12~6kg/cm2 also(3) when substituting dry air for Nitrogen Gas.
NIPPLE (1) Check if gas leaks with soapy water. ¥ Check if gas leaks from joint of theAND (2) Replace Quick Coupler in case of leakage. ¥ Coupler.COUPLER
PIPE (1)¥ Put all Joint Pipes in a clean box and (1)¥ cover tightly with the lid so that dust or(1)¥ humidity is not inserted.
1
2
3
4
5
6
7
DRY ANDAIRNITROGENGAS
▼ General Control of Refrigerating Cycle
- 16 -
NOTCH
TEMP(ûC)
ROOM
Min Min/Mid
Mid Mid/Max
Max
-15 -16.5 -18 -19.5
FREEZER
VACATION FREEZE TEMP QUICK FREEZE
-22
This description is made for GR-349, 389SQ. Please refer to overall PCB circuits for other models.
1 FUNCTION EXPOSITION
1) FUNCTION(1) The refrigerator starts from optimum condition when electric power is first on. But the operation condition changes "Mid"
➝ "Mid/Max" ➝ "Max" ➝ "Min" ➝ "Min/Mid" ➝ "Mid" whenever pressing the FREEZE TEMP button.
(2) It returns to "Mid" conditions if power off and on again.
MICOM FUNCTION & PCB CIRCUIT EXPLANATION
- 17 -
2) QUICK FREEZER(1) Function to raise the freezing speed by operating the COMP successively. As pressing the QUICK FREEZE button, the
QUICK FREEZE LED is displayed. Then after 3 hours' successive operation of COMP, the QUICK FREEZING functionwill be released.
(2) Defrosting During the QUICK FREEZING operates as follow.When the QUICK FREEZING time is below 90 minutes, defrost and then operate the QUICK FREEZING for theremaining time. When the QUICK FREEZING time is over 90 minutes, defrost and then operate the QUICK FREEZINGfor 2 hours
(3) If QUICK FREEZE button is pressed during defrosting, the QUICK FREEZE LED is lit up. But the QUICK FREEZINGoperates for 3 hours after 7 minutes from the end of defrosting.
(4) If VACATION button is pressed during the QUICK FREEZING, the QUICK FREEZING LED function is released.
(5) If power off during the QUICK FREEZING and power on again, the QUICK FREEZING function is released.
3) VACATION FUNCTION(1) Function for Energy Saving. As pressing the VACATION button, the VACATION LED is displayed and this function is
operated.
(2) Freezer Compartment is not kept by compressor at the notch displayed but at -13¡C± differential.
(3) Defrosting and Fan control is same as normal operation.
(4) If QUICK FREEZE button is pressed during the VACATION FUNCTION, VACATION FUNCTION is released.
(5) If power off during the VACATION FUNCTION and power on again, the VACATION FUNCTION is released.
4) DOOR OPENING ALARM
(1) When the REFRIGERATOR DOOR is opened and won't be closed after 1 minute from the its opened, BUZZER soundsto notify it.
(2) At frist, BUZZER sounds three times at each intervals of 0.5 second. Then makes a 0.5 second ON/OFF alarm threetimes at intervals of 30 seconds.
(3) If the REFRIGERATOR door closed during ALARM, it is released.
5) DISPLAY BUTTON RING(1) If display function button(FREEZE TEMP, QUICK FREEZE, VACATION) of the front of the TOP COVER is pushed,
BUZZER rings with "DING~ DONG~"(See the BUZZER OPERATION CHECK)
6) DEFROSTING(1) If the accumulated time for the operation of the COMPRESSOR is meet with 7 hours, the DEFROSTING HEATER is
started.
(2) The first defrosting is performed at 4 hours(compressor ON) later since the power is on.
(3) If DEFROST SENSOR is over 7¡C during DEFROSTING, end the operation of DEFROSTING with DEFROSTINGHEATER paused, And after 7 minutes, the operation for the freezing is started.But, if DEFROST SENSOR is not reach to 7¡C after 2 hours' operation of the defrosting heater, it represents a defrostingtrouble.(See the TROUBLE REPRESENTING FUNCTION)
(4) If DEFROST SENSOR is short or open, defrosting is not performed.
7) ORDERLY OPERATION OF ELECTRIC PARTSTo avoid NOISE and DAMAGE, the items containing an electric parts such as COMP, DEFROSTING HEATER and FANMOTOR operate in order as follows.
- 18 -
CLOSE OPEN CLOSE OPEN CLOSE
BUZZER
within1 minute
1 minute 30seconds
30seconds
threetimes
threetimes
threetimes
FREEZERDOOR
OPERATION STATE OPERATION ORDER
WHEN DEFROST SENSORTEMPERATURE IS OVER7¡C. (WHEN PURCHASING OR MOVING)
WHEN DEFROST SENSOR TEMPERATURE IS BELOW7¡C. (WHEN POWER FAILURE OR SERVICING)
WHEN RETURNING TO NORMALSTATE FROM TEST MODE
POWER COMP FANON ON ON
after 0.5 sec. after 0.5 sec.
All Elec. Parts COMP FANOFF ON ON
after 7 min . after 0.5 sec.
POWER DEFROSTING DEFROSTINGON HEATER ON HEATER ON
after 0.5 sec. after 10 sec.
COMP FANON ON
after 0.5 sec. after 0.5 sec.
WH
EN
PL
UG
GE
D A
T F
IRS
T
8) SELF-TEST(1) Function to make service easy in case of occuring a trouble in the product.
(2) When occurring a trouble, if the button is pushed, but the function could not operate.
(3) If a toruble release during the representation of trouble, a refrigerator performs the normal function(RESET).
(4) To represent a ERROR CODE, it use FREEZE TEMP LEDs on TOP COVER. If ERROR occurs, the other LEDs exceptERROR CODE LEDs are all off.
ERROR CODE LEDs OPERATION IN TROUBLE'S OCCURRINGNO. ITEMS
F1 F2 F3 F4DESCRIPTION
COMP FAN DEFROST HEATER
1 FREEZER FREEZER SENSOR open SENSOR abnormal or short.
O O
2 DEFROST DEFROST SENSOR open SENSOR abnormal or short.
O O No defrosting
3 DEFROSTING DEFROST HEATER, FUNCTION TEMP. FUSE open oris abnormal disconnection (Displayed
after at least 4 hours O O O
from the trouble'soccurring.)
4 RT-SENSOR NOTE 1) Room Temperatureabnormal SENSOR open or short
O O O
- 19 -
VACATION FREEZE TEMP QUICK FREEZE
F1
ERROR CODE LEDs
F2 F3 F4
15 minutes On/15 minutes Off
* NOTE 1) If one second pass after pressing the QUICK FREEZE and FREEZE TEMP buttons togather in normaloperation, operates as follow.
If normal, LEDs on the TOP COVER is all on. If abnormal, LEDs are all on except VACATION LED.
RT-SENSOR
:ONO : OPERATE NORMAL
:OFF
9) FUNCTION TEST(1) Function to check the testing function of PCB and refrigerator and to find where the trouble.
(2) The test switch is on the MAIN PCB of refrigerator.TEST FUNCTION is released and RESET after MAX. 2hours regardless of TEST MODE.
(3) If the buttons on TOP COVER is pushed during TEST MODE, Function is not operated and only BUZZER ring with"DING~ DONG~"
(4) After the end of TEST MODE, pull out the power cord and plug it in again(RESET).
(5) If a ERROR occurs during the TEST MODE, TEST FUNCTION is released and DISPLAY LEDs represent ERRORCODE.
(6) If the TEST swithch is pushed during ERROR CODE, TEST FUNCTION is not operated.
MODE OPERATION CONTENTS REMARKS
TEST 1 Press TEST button 1. COMP OPERATES SUCCESSIVELY.once. 2. FAN OPERATES SUCCESSIVELY.
3. DEFROSTING HEATER OFF4. ALL DISPLAY LEDS ON.
TEST 2 Press TEST button 1. COMP OFF. If DEFROST HEATER once in the state of 2. FAN OFF. is over 7¡C, it returns TEST MODE 1. 3. DEFROST HEATER ON. to the NORMAL STATE.
4. ALL THE DISPLAY LEDS OFF EXCEPT QUICK FREEZE AND VACATION LEDS.
NORMAL Press TEST button Return to the initial condition. Comp starts STATE once in the state of (RESET) after 7 minutes.
TEST MODE 2.
- 20 -
¥ LED Check Function : Press the QUICK FREEZE and FREEZE TEMP buttons at the same time. After 1 sec., all theLEDs of the DISPLAY are ON simultaneously. If release the BUTTON, return to the previouscondition.
2 FUNCTION DESCRIPTION1) ELECTRIC CIRCUITS
A
B
Note:B has been applied to europe area.
TRANS secondary side is composed of electric power circuits for RELAY driving electricity (12Vdc) and for supplyingelectricity to MICOM and IC (5Vdc). The voltage in each part is as follows.
VA1 is the part to protect over voltage and noise. When more than 385V is applied, the thermal-fuse(130°C cut-off, localoption) in a first part of TRANS is cut so that the elements in the secondary side of TRANS are protected.
2) OSCILLATION CIRCUIT
CIRCUIT for occurring CLOCK which motivates the internal local element of IC1 to transmit and receive an information andBASIC TIME for calculating time. Use a proper form for OSC 1. Because in case that SPECIFICATION is changed, thecalculated time in IC1 is changed or IC1 isn't able to operate.
3) RESET CIRCUIT
All the internal parts of MICOM(IC1) return to the initial condition when the early power ON or apply power again in MICOMafter temporary power failure. As a result, all the functions operate according to the early condition. At the early period ofpower ON the "LOW" voltage is applied in the RESET terminal of MICOM for the fixed time. The RESET terminal is 5Vduring the general operation.
- 21 -
PARTS both ends of VA1 both ends of CM1 both ends of CM2 both ends of CE2 both ends of CC2
VOLTAGE 230Vac 14Vac 17Vdc 12Vdc 5Vdc
7
9
4) LOAD/BUZZER OPERATION, DOOR OPENING SENSING CIRCUIT(1) LOAD OPERATION CHECK
Note: B has been only applicated to europe area.
BA
• If the DOOR-R is opened during FAN MOTOR is operated, FAN MOTOR is stopped immediately.• The A , B of DOOR S/W-R is connected DOOR OPEN DETECTION CIRCUIT as follow.• If the DOOR-R is opened or closed, then the DOOR S/W-R is ON/OFF, and the LAMP-R is ON/OFF,
and at the same time, S/W of the A , B of DOOR S/W-R for detection of DOOR-R open is ON/OFF.(2) DOOR OPENING PERCEPTION CHECK
*NOTICE: If you would change DOOR S/W-R, must use the componenot of right PART NUMBER. Because there is a similartype DOOR S/W-R of NOT MICOM MODEL, it's logic of the A , B of DOOR S/W-R is reversed.
• Even though LAMP-R is operated a normal ON/OFF according to DOOR S/W-R, but the MICOM couldn't detect a DOOR-R opened or closed of lead wire of the A , B is abnormal or S/W of the A , B of DOOR S/W-R is abnormal.
• When DOOR-R open isn't detected : Even though DOOR-R is opened, FAN MOTOR couldn't stop.When DOOR-R close isn't detected : Even though DOOR-R is closed, BUZZER sounds a DOOR OPEN ALARM.check a lead wire of the A , B and DOOR S/W-R.
- 22 -
KIND OF LOADCOMP,
FAN MOTOR DEFROSTING HEATERCOMP COOLING FAN
MEASURING POINT (IC4) No.11 No.12 No.13
ON below 1VSTATE
OFF 12V
MEASURING POINTNO.13 OF IC 1 (MICOM)
REFRIGERATOR DOOR
CLOSE 5V(S/W of A , B is OFF state)
OPEN 0V(S/W of A , B is ON state)
(3)BUZZER OPERATION CHECK
- 23 -
DISPLAY FUNCTION BUTTON RING DOOR OPEN ALARM(DING~ DONG~) (SCREECHING)
OFF
IC1 (No.14 Pin) ov
IC1 (No.13 Pin) ov
MEASURINGPOINT
CONDITIONS
0.05s 0.2s 0.1s 1s
0V
5V
0V
5V
0V
5V
0V
5V
0.5s 0.5s
2.66khz (DING~) 2.232khz (DONG~) 3.1khz OFF
5) TEMP SENSOR CIRCUITS
The above circuit reads the surrounding temperature, DEFROSTING temperature and FREEZER ROOM temperature intoMICOM(IC1). OPEN or SHORT state of each SENSOR is as follows.
6) SWITCH INPUT CIRCUITThe following circuit is a test switch input circuit for checking the refrigerator.
- 24 -
(RTÐ SENSOR)
(DEFROST SENSOR)
(FREEZER COMPARTMENT SENSOR)
SENSOR CHECK POINT NORMAL (-30¡C~50¡C) SHORT OPEN
ROOM TEMPERATURE SENSOR
POINT A Voltage
DEFROST SENSOR POINT B Voltage 0.5V ~ 4.5V 0V 5V
FREEZER SENSOR POINT C Voltage
7) TEMPERATURE COMPENSATION
¥ TEMPERATURE COMPENSATION TABLE by adjusting resistance values. (the temp difference compared to the presenttemp.)
eg) If the compensation resistance of freezer compartment is changed from 10K (present resistance) to 18K (revisedresistance), the temp of freezer compartment goes up by +2¡C.
- 25 -
FREEZER TEMPERATURE COMPENSATION
FREEZER ROOM
RESISTANCE VALUES(R1) TEMPERATURE COMPENSATION REMARKS
180 k½ + 5.0¡C COMPENSATE WARMLY
56 k½ +4.0¡C
33 k½ +3.0¡C
18 k½ +2.0¡C
12 k½ +1.0¡C
10 k½ 0¡C STANDARD
8.2 k½ -1.0¡C
5.6 k½ -2.0¡C
3.3 k½ -3.0¡C
2 k½ -4.0¡C
470 ½ -5.0¡C COMPENSATE COOLLY
¥ TEMPERATURE COMPENSATION OF FREEZER ROOM
¥ This circuit is aimed to input the necessary temperature compensation values into the MICOM in order to adjust the freezertemperature which is different in each model.
- 26 -
Revised resistance470½ 2k½ 3.3k½ 5.6k½ 8.2k½ 10k½ 12k½ 18k½ 33k½ 56k½ 180k½
Present resistance
NOT1¡C↑ 2¡C↑ 3¡C↑ 4¡C↑ 5¡C↑ 6¡C↑ 7¡C↑ 8¡C↑ 9¡C↑ 10¡C↑
470½ COMPENSATE
1¡C↓NOT
1¡C↑ 2¡C↑ 3¡C↑ 4¡C↑ 5¡C↑ 6¡C↑ 7¡C↑ 8¡C↑ 9¡C↑2k½ COMPENSATE
2¡C↓ 1¡C↓NOT
1¡C↑ 2¡C↑ 3¡C↑ 4¡C↑ 5¡C↑ 6¡C↑ 7¡C↑ 8¡C↑3.3k½ COMPENSATE
3¡C↓ 2¡C↓ 1¡C↓NOT
1¡C↑ 2¡C↑ 3¡C↑ 4¡C↑ 5¡C↑ 6¡C↑ 7¡C↑5.6k½ COMPENSATE
4¡C↓ 3¡C↓ 2¡C↓ 1¡C↓NOT
1¡C↑ 2¡C↑ 3¡C↑ 4¡C↑ 5¡C↑ 6¡C↑8.2k½ COMPENSATE
FREEZER5¡C↓ 4¡C↓ 3¡C↓ 2¡C↓ 1¡C↓
NOT1¡C↑ 2¡C↑ 3¡C↑ 4¡C↑ 5¡C↑
ROOM 10k½ COMPENSATE
(R1)6¡C↓ 5¡C↓ 4¡C↓ 3¡C↓ 2¡C↓ 1¡C↓
NOT1¡C↑ 2¡C↑ 3¡C↑ 4¡C↑
12k½ COMPENSATE
7¡C↓ 6¡C↓ 5¡C↓ 4¡C↓ 3¡C↓ 2¡C↓ 1¡C↓NOT
1¡C↑ 2¡C↑ 3¡C↑18k½ COMPENSATE
8¡C↓ 7¡C↓ 6¡C↓ 5¡C↓ 4¡C↓ 3¡C↓ 2¡C↓ 1¡C↓NOT
1¡C↑ 2¡C↑33k½ COMPENSATE
9¡C↓ 8¡C↓ 7¡C↓ 6¡C↓ 5¡C↓ 4¡C↓ 3¡C↓ 2¡C↓ 1¡C↓NOT
1¡C↑56k½ COMPENSATE
10C↓ 9¡C↓ 8¡C↓ 7¡C↓ 6¡C↓ 5¡C↓ 4¡C↓ 3¡C↓ 2¡C↓ 1¡C↓NOT
180k½ COMPENSATE
8) LIGHTING CIRCUITS OF KEY BUTTON INPUT AND DISPLAY PARTS
The above circuit is to judge the operation conditions of function key and to light each function indicating LED. It is operatedby SCAN method.
- 27 -
FREEZER TEMP�CONTROL KEY
DISPLAY PART
3. SENSOR RESISTANCE CHARACTERISTICS TABLE
¥ The tolerance of sensor resistance is ±5%.
¥ Be sure to measure the sensor resistance after keeping the sensor more than 3 minutes at a measuring temperature. (It needs delay due to sensor speed.)
¥ Measure the resistances of SENSORs with a digital tester after disconnecting CON 4 of MAIN PWB ASSY.
- 28 -
MEASURED TEMPERATURE RESISTANCE OF FREEZER SENSOR RESISTANCE OF DEFROST SENSOR, ROOM TEMPERATURE SENSOR
-20¡C 22.3k½ 77k½
-15¡C 16.9k½ 60k½
-10¡C 13.0k½ 47.3k½
-5¡C 10.1k½ 38.4k½
0¡C 7.8k½ 30k½
+5¡C 6.2k½ 24.1k½
+10¡C 4.9k½ 19.5k½
+15¡C 3.9k½ 15.9k½
+20¡C 3.1k½ 13k½
+25¡C 2.5k½ 11k½
+30¡C 2.0k½ 8.9k½
+40¡C 1.4k½ 6.2k½
+50¡C 0.8k½ 4.3k½
4. MAIN PWB ASS'Y AND PARTS LIST
1) MAIN PWB ASS'Y
- 29 -
DIP
CE1
+
CM1
CM2
+
+
CE2
CE6
CE3
+J06 J07
J01
+
IC3
CC1 CC2
CE4
+CE5
D5
OP2
R21
OP1
R20
CC4
R6
CC10
R19
J05J10
J11
J02 R7 J04 RF3
R10
R1
CC8
CC7
R16
R15
R17
RF2
RF1
TEST
R13
R12
R11
IC4
J09
IC1
CC3
J08
6871JB1037
STICKER
J12
Q1
J13
Q2
J14
Q3
R14
CC6
CC5�
OSC1�R8�
R9
CC9
1
D
6
R-DOOR F
CON3
RT-SENSOR9 1
CON2
98 12
COMP F-FAN D-HEATER
CON1VA1
RY2 RY3RY1
D8
D7
J15
D6R4 R18 R3
BUZZER
Q4
IC6
TRANS
D1 D3 D4 D2
IC2
2) REPLACEMENT PARTS LIST
- 30 -
3) PWB ASS'Y, DISPLAY AND PARTS LIST
- 31 -
5. PWB circuit drawing- The PWB circuit drawing may change without notice.
- 32 -
- 33 -
▼ The parts of refrigerator and the shape of each part are subject to change in different localities.1.Ref. No : GR-349/389
EXPLODED VIEW & REPLACEMENT PARTS LIST
- 34 -
103A
103B
503B
406B
114A
102B
109C
102A
120D
120B120E
501A
120C 120A
282B
283B
104C
106B
104A
109A
109B
103C
301A
418A
401A
104C
106B
104A
315A
315B315C
315B315C
319A 319C
328A327A
420A329C
323B
310A
308A
309A314A
312A
317A
307A
318A
105A
304A
411A
404A405A
329A
332A
409B
330B
405C
281B
281F
610E
108A
604F
120H
- 35 -
136E
136E
136F
155A
140A
151A
151B
241A
235A
249C241A
249A
237A
241C
136A
125A
136B
136C
136D
233A 231A
210A
210A
249B
230A
203A 201A
200A
281D
OPTIONAL
2.Ref. No : GR-349
145C
- 36 -
151A
151B
136E
136E
136F
155A
140A
151A
241A
235A
249C241A
249A
237A
241C
136A
125A
136B
136C
136D
233A 231A
210A
210A
249B
230A
203A 201A
200A
281D
OPTIONAL
OPTIONAL
145C
1.Ref. No : GR-389
RREEPPLLAACCEEMMEENNTT PPAARRTTSS LLIISSTT
BUYER NAME:CIS MODEL NAME:GR-349SQF LG REFERENCE NO:GC-349SQF.CEWQCIS
COLOR:EUROPE WHITE
S AL LOCA.NO PART NO(LG) DESCRIPTION SPECIFICATION REMARK102A 3123JQ2004B TOP COVER ASSEMBLY102B 3122JD1001B TOP COVER,FRONT103A 3650JQ2021A HANDLE,BACK103B 3650JQ2021B HANDLE,BACK103C 3550JQ0002A COVER,LOWER104A 4981JQ3001A SUPPORTER ASSEMBLY,LEG104C 4980JQ3033A SUPPORTER,LEG105A 5251JQ3002A DRAIN ASSEMBLY,PIPE-Z106B 4779JQ3002A LEG ASSEMBLY,ADJUST108A 3391JQ2010A TRAY ASSEMBLY,DRAIN109A 5006JQ3040C CAP,COVER109B 5006JQ3038A CAP,COVER109C 5006JQ3039A CAP,COVER114A 5020JD1003A BUTTON,LINK120A 4995JQ1005B CONTROL BOX ASSEMBLY,R120B 4994JS1002A CONTROL BOX,R120C 4940JQ3003A KNOB,DAMPER120D 3550JQ3009B COVER,LAMP120E 5209JQ1005B DUCT ASSEMBLY,INSULATION120H 3550JA2076A COVER,LED125A 3390JQ2001A TRAY,ICE136A 3391JQ2011A TRAY ASSEMBLY,DRAWER136B 3391JQ2011B TRAY ASSEMBLY,DRAWER136C 3391JQ2011C TRAY ASSEMBLY,DRAWER136D 3391JQ2011D TRAY ASSEMBLY,DRAWER136E 5027JQ2006A SHELF ASSEMBLY,R136F 5027JQ2007A SHELF ASSEMBLY,R140A 3390JS1007A TRAY,VEGETABLE145C 4974JQ2008A GUIDE,RAIL151A 3391JA2015B TRAY ASSEMBLY,VEGETABLE151B 3391JA2015A TRAY ASSEMBLY,VEGETABLE155A 3551JQ2013A COVER ASSEMBLY,T/V200A 3581JQ8042A DOOR ASSEMBLY,F201A 5433JQ0011B DOOR FOAM ASSEMBLY,F210A 4810JQ3019B BRACKET,DOOR210A 4810JQ3019B BRACKET,DOOR213A 4987JQ1012A GASKET ASSEMBLY,DOOR230A 3581JQ8040A DOOR ASSEMBLY,R231A 5433JQ0009A DOOR FOAM ASSEMBLY,R233A 4987JQ1012C GASKET ASSEMBLY,DOOR235A 3390JQ2006A TRAY,EGG237A 4974JA2020A GUIDE,BOTTLE241A 5004JD1098E BASKET,DOOR241C 5004JD1099H BASKET,DOOR
RREEPPLLAACCEEMMEENNTT PPAARRTTSS LLIISSTT
BUYER NAME:CIS MODEL NAME:GR-349SQF LG REFERENCE NO:GC-349SQF.CEWQCIS
COLOR:EUROPE WHITE
S AL LOCA.NO PART NO(LG) DESCRIPTION SPECIFICATION REMARK249A 5075JQ2002C BANK ASSEMBLY,DAIRY249B 3550JA1087A COVER,TRAY249C 5074JD1006C BANK,DAIRY281B 4775JQ3002A HINGE ASSEMBLY,U281D 5006JQ3012D CAP,HINGE281F 4775JQ3002B HINGE ASSEMBLY,U282B 4775JQ2026A HINGE ASSEMBLY,C283B 4775JQ2027A HINGE ASSEMBLY,L304A 3550JQ0001A COVER,BACK-M/C307A 2521CTA6215 COMPRESSOR,SET ASSEMBLY308A 6749C-0006C P.T.C ASSEMBLY309A 6750C-0005V O.L.P310A 3550CT0008A COVER,P.T.C312A 5040JQ3008A RUBBER,SEAT314A 4620JQ3001A STOPPER,COMP315A 3103JQ1006A COMP BASE ASSEMBLY,STD315C 1PZZJQ3017A PIN,DRAWING317A 5851JQ2001A DRIER ASSEMBLY318A 4930JA3034A HOLDER,DRIER319A 3390JA0018A TRAY,DRIP319C 4974JQ1006A GUIDE,FAN323B 5403JQ1026A CONDENSER ASSEMBLY,WIRE327A 5040JQ3006A RUBBER,DAMPING328A 5040JQ3023A RUBBER,DAMPING329A 5901JQ1003A FAN ASSEMBLY329C 5901JQ1004A FAN ASSEMBLY330B 4999JQ2001A SHROUD ASSEMBLY,F332A 3531JQ2001A GRILLE ASSEMBLY,FAN404A 4680JR1009F MOTOR(MECH),COOLING405A 4810JQ3021A BRACKET,MOTOR405C 5040JQ3003A RUBBER,MOTOR-N406B 6600JR1002A SWITCH,[PUSH]409B 6912JR2001C LAMP,[VACUUM]411A 6411JR1003L POWER CORD ASSEMBLY418A 5300JR1006B HEATER,SHEATH420A 4680JR1008C MOTOR(MECH),COOLING501A 6871JR1022B PWB(PCB) ASSEMBLY,MAIN503B 6871JR3001A PWB(PCB) ASSEMBLY,DISPLAY604F 3550JQ2046A COVER,DUCT610E 3550JQ2014A COVER,SENSOR
6923 6923JR8006B MICOM ASSEMBLY
RREEPPLLAACCEEMMEENNTT PPAARRTTSS LLIISSTT
BUYER NAME:CIS MODEL NAME:GR-389SQF LG REFERENCE NO:GC-389SQF.CEWQCIS
COLOR:EUROPE WHITE
S AL LOCA.NO PART NO(LG) DESCRIPTION SPECIFICATION REMARK102A 3123JQ2004A TOP COVER ASSEMBLY102B 3122JD1001A TOP COVER,FRONT103A 3650JQ2021A HANDLE,BACK103B 3650JQ2021B HANDLE,BACK103C 3550JQ0002A COVER,LOWER104A 4981JQ3001A SUPPORTER ASSEMBLY,LEG104C 4980JQ3033A SUPPORTER,LEG105A 5251JQ3002A DRAIN ASSEMBLY,PIPE-Z106B 4779JQ3002A LEG ASSEMBLY,ADJUST108A 3391JQ2010A TRAY ASSEMBLY,DRAIN109A 5006JQ3040C CAP,COVER109B 5006JQ3038A CAP,COVER109C 5006JQ3039A CAP,COVER114A 5020JD1003A BUTTON,LINK120A 4995JQ1005A CONTROL BOX ASSEMBLY,R120B 4994JS1003A CONTROL BOX,R120C 4940JQ3003A KNOB,DAMPER120D 3550JQ3009B COVER,LAMP120E 5209JQ1005A DUCT ASSEMBLY,INSULATION120N 3550JA2076A COVER,LED125A 3390JQ2001A TRAY,ICE136A 3391JQ2011A TRAY ASSEMBLY,DRAWER136B 3391JQ2011B TRAY ASSEMBLY,DRAWER136C 3391JQ2011C TRAY ASSEMBLY,DRAWER136D 3391JQ2011D TRAY ASSEMBLY,DRAWER136E 5027JQ2006A SHELF ASSEMBLY,R136F 5027JQ2007A SHELF ASSEMBLY,R140A 3390JS1007A TRAY,VEGETABLE145C 4974JQ2008A GUIDE,RAIL151A 3391JA2015B TRAY ASSEMBLY,VEGETABLE151B 3391JA2015A TRAY ASSEMBLY,VEGETABLE155A 3551JQ2013A COVER ASSEMBLY,T/V201A 5433JQ0011A DOOR FOAM ASSEMBLY,F203A 4987JQ1012A GASKET ASSEMBLY,DOOR210A 4810JQ3019B BRACKET,DOOR210A 4810JQ3019B BRACKET,DOOR231A 5433JQ0010A DOOR FOAM ASSEMBLY,R233A 4987JQ1012B GASKET ASSEMBLY,DOOR235A 3390JQ2006A TRAY,EGG237A 4974JA2020A GUIDE,BOTTLE241A 5004JD1098E BASKET,DOOR241C 5004JD1099H BASKET,DOOR249A 5075JQ2002C BANK ASSEMBLY,DAIRY249B 3550JA1087A COVER,TRAY
RREEPPLLAACCEEMMEENNTT PPAARRTTSS LLIISSTT
BUYER NAME:CIS MODEL NAME:GR-389SQF LG REFERENCE NO:GC-389SQF.CEWQCIS
COLOR:EUROPE WHITE
S AL LOCA.NO PART NO(LG) DESCRIPTION SPECIFICATION REMARK
281B 4775JQ3002A HINGE ASSEMBLY,U281D 5006JQ3012D CAP,HINGE281F 4775JQ3002B HINGE ASSEMBLY,U282B 4775JQ2026A HINGE ASSEMBLY,C283B 4775JQ2027A HINGE ASSEMBLY,L304A 3550JQ0001A COVER,BACK-M/C307A 2521CTA6215 COMPRESSOR,SET ASSEMBLY308A 6749C-0006C P.T.C ASSEMBLY309A 6750C-0005V O.L.P310A 3550CT0008A COVER,P.T.C312A 5040JQ3008A RUBBER,SEAT314A 4620JQ3001A STOPPER,COMP315C 1PZZJQ3017A PIN,DRAWING317A 5851JQ2001A DRIER ASSEMBLY318A 4930JA3034A HOLDER,DRIER319A 3390JA0018A TRAY,DRIP319C 4974JQ1006A GUIDE,FAN323B 5403JQ1026A CONDENSER ASSEMBLY,WIRE327A 5040JQ3006A RUBBER,DAMPING328A 5040JQ3023A RUBBER,DAMPING329A 5901JQ1003A FAN ASSEMBLY329C 5901JQ1004A FAN ASSEMBLY330B 4999JQ2001A SHROUD ASSEMBLY,F332A 3531JQ2001A GRILLE ASSEMBLY,FAN404A 4680JR1009F MOTOR(MECH),COOLING405A 4810JQ3021A BRACKET,MOTOR405C 5040JQ3003A RUBBER,MOTOR-N406B 6600JR1002A SWITCH,[PUSH]409B 6912JR2001C LAMP,[VACUUM]411A 6411JR1003L POWER CORD ASSEMBLY418A 5300JR1006B HEATER,SHEATH420A 4680JR1008C MOTOR(MECH),COOLING501A 6871JR1022B PWB(PCB) ASSEMBLY,MAIN503B 6871JR3001A PWB(PCB) ASSEMBLY,DISPLAY604F 3550JQ2046A COVER,DUCT610E 3550JQ2014A COVER,SENSOR
249C 5074JD1006C BANK,DAIRY
