Serv Manual CARDIFF T1 R22 Big Duct Type

7/23/2019 Serv Manual CARDIFF T1 R22 Big Duct Type

1/86

CommercialDuct Type Split Air

Conditioner Service Manual


2/86

Contents

1. PRODUCT ......................................................................................................................................................... 4

1.1. MODELS LIST....................................................................................................................................... 4

1.2. NOMENCLATURE ................................................................................................................................ 5

1.3. FUNCTION............................................................................................................................................. 5

1.4. PRODUCT DATA .................................................................................................................................. 6

1.4.1. Product Data at Rated Condition ............................................................................................ 6

1.4.2. Operation Range ..................................................................................................................... 17

1.4.3. Electrical Data.......................................................................................................................... 18

1.5. PIPING DIAGRAM .............................................................................................................................. 19

1.5.1. Cooling Only ............................................................................................................................ 19

1.5.2. Heat Pump ............................................................................................................................... 20

2. CONTROL........................................................................................................................................................ 21

2.1. OPERATION FLOWCHART.............................................................................................................. 21

2.1.1. Cooling/Dry Operation ............................................................................................................ 21

2.1.2. Heating Operation ................................................................................................................... 22

2.2. MAIN LOGIC........................................................................................................................................ 23

2.2.1. Cooling...................................................................................................................................... 23

2.2.2. Dry Mode .................................................................................................................................. 25

2.2.3. Heating Mode .......................................................................................................................... 26

2.2.4. Defrosting ................................................................................................................................. 28

2.2.5. Fan Mode ................................................................................................................................. 30

2.3. WIRELESS REMOTE CONTROLLER ............................................................................................ 30

2.3.1. Operation View ........................................................................................................................ 30

2.3.2. Display View............................................................................................................................. 32

2.4. WIRED REMOTE CONTROLLER ................................................................................................... 33

2.4.1. Operation View ........................................................................................................................ 33

2.4.2. Display View............................................................................................................................. 34

2.4.3. Dimension ................................................................................................................................ 35

2.4.4. Installation ................................................................................................................................ 35

2.5. CENTRALIZED CONTROLLER ....................................................................................................... 36

2.5.1. Centralized Controller-not with week timer ......................................................................... 36

2.5.2. Centralized Controller-week timer ........................................................................................ 38

2.5.3. Field Setting ............................................................................................................................. 41

2.5.4. Control Wiring Design............................................................................................................. 42

3. INSTALLATION ............................................................................................................................................... 44

3.1. INDOOR UNIT INSTALLATION ........................................................................................................ 46

3.1.1. Installation Site ........................................................................................................................ 46

3.1.2. Dimension Data ....................................................................................................................... 46

3.1.3. Installation Clearance Data.................................................................................................... 48

3.1.4. Drain Piping Work ................................................................................................................... 483.2. OUTDOOR UNIT INSTALLATION.................................................................................................... 49


3/86

3.2.1. Installation Site ........................................................................................................................ 49

3.2.2. Dimension Data ....................................................................................................................... 49

3.2.3. Installation Clearance Data.................................................................................................... 50

3.3. REFRIGERATION PIPING WORK................................................................................................... 51

3.3.1. Caution in Connecting Pipes ................................................................................................. 51

3.3.2. Specification of Connecting Pipe .......................................................................................... 52

3.4. ELECTRIC WIRING WORK .............................................................................................................. 52

3.4.1. Wiring Principle........................................................................................................................ 52

3.4.2. Electric Wiring Design ............................................................................................................ 53

3.4.3. Specification of Power Supply Wire and Air Switch ........................................................... 54

4. MAINTENANCE .............................................................................................................................................. 57

4.1. TROUBLE TABLE ............................................................................................................................... 57

4.2. FLOW CHART OF TROUBLESHOOTING ..................................................................................... 60

4.2.1. High Pressure Protection ....................................................................................................... 60

4.2.2. Low Pressure Protection ........................................................................................................ 61

4.2.3. Discharge Protection .............................................................................................................. 62

4.2.4. Overcurrent Protection ........................................................................................................... 62

4.2.5. Communication Error.............................................................................................................. 63

4.3. WIRING DIADRAM............................................................................................................................. 63

4.3.1. DISASSEMBLY AND ASSEMBLY PROCEDURE OF MAIN PARTS .............................. 63

4.4. EXPLODED VIEWS AND PART LIST.............................................................................................. 75

4.4.1. Outdoor Unit............................................................................................................................. 75

4.4.2. Indoor Unit................................................................................................................................ 81


4/86

1. PRODUCT

1.1. MODELS LIST

CapacitykW/Ton

Appearance

Class Model Name

Cooling Heating

Ref.

Outdoor Indoor

CFGR20/B-G 20/5.69 23/6.54

CFG20/B-G 20/5.69 /

CFGR25/B-G 25/7.11 28/7.96

CFG25/B-G 25/7.11 /

CFGR30/B-G 30/8.53 33/9.38

CFG30/B-G 30/8.53 /

R22

CFGR40/B-G 40/11.37 43/12.23

CFG40/B-G 40/11.37 /

R22

CFGR50/

B(2)-G50/14.22 53/15.07

CFG50/B(2)-G 50/14.22 /

CFGR60/

B(2)-G60/17.06 64/18.20

CFG60/B(2)-G 60/17.06 /

R22

CFGR55/B-G 55/15.64 60/17.06

CFG55/B-G 55/15.64 /

CFGR65/B-G 65/18.48 70/19.90

DuctType

CFG65/B-G 65/18.48 /

R22

Note:1Ton =12000Btu/h = 3.517kW


5/86

1.2. NOMENCLATURE

CFG

Supplementation code

Control methodFrequency conversion system

Static pressure type

Cooling capacity

Product type

CARDIFF Air-duct air supply

Meaning of standard model before/

Meaning CFG Unit type Cooling capacityStatic pressure

type

Frequencyconversion

system

Controlmethod

Cooling onlytype-omitted

Commontype-omitted

Fixedfrequency-omitted

Routine-omitted

Heat pumpauxiliary electricheat type-R

High staticpressure-H

Frequencyconversion-P

Remotemonitoring-Y

Expressionmethod

Air-ductair supply

Auxiliary hot waterplate and pipetype-W

Nominal coolingcapacity (kW)

The outdoor unit isnot expressed.

Meaning of supplementation code after /Meaning Design No. Refrigerant Production

methodPower type Indoor and outdoor unit

code

R22-omitted 3N~ 380v-G Outdoor unit-OR407-N (The unit to be

exported must beexpressed)

Indoor unit-I

R410a-Na The entire unit is notexpressed.

Expressionmethod

Arrangedbased on A,B, C

Others to beapplied for whenthey are used

Self-control-omitted

1.3. FUNCTIONFunction Description

Serenity Special structure design makes the extremely low noise during the running of the unit.

Efficient

Energy-saving

National energy-saving certificate has been gained and the energy-saving level has

reached the peak in this field.

Agile

Application

Max. length of connecting pipe between the indoor unit and the outdoor unit can be 70m

and its drop can be 30m. External static pressure of the indoor unit can be customized

according to the requirement of the customer.


6/86

1.4. PRODUCT DATA

1.4.1. Product Data at Rated ConditionCFGR/B-G(I)Indoor

Unit 20 25 30

CFGR/B-G(O)Models

Outdoor

Unit 20 25 30

Btu/h 68243 85304 102360Cooling

kW 20 25 30

Btu/h 78479 95540 112601

Nominal Capacity

At Rated ESPHeating

kW 23 28 33

Power Supply V/Ph/Hz 380/3/50

Cooling 8.5 10.2 12.1Power Consumption

HeatingkW

6.8 8.7 11.1

Cooling 15.8 18.9 21.8Running Current

HeatingA

13.5 16.8 18.3

Refrigerant Type R22

Refrigerant Charge kg 7 8 12


Type Centrifugal / Belt Drive

CFM 2354 2825 3237Air flow

m3/h 4000 4800 5500

Input Power W 1.1 1.1 1.5

Running Current A 2.8 3.0 3.6

in.wg 0.36 0.36 0.52Rated ESP

Pa 90 90 130

Fan Motor Protection Overload protection

Fan

Sound Pressure Level

(H/M/L/SL)dB(A) 54 54 57

Material Inner Groove Copper TubeTube

Diameter mm 9.52 9.52 9.52

Material AluminumCoilFin

No.of Rows/FPI 3/16 3/16 5/16

Coil Area Sqm 0.59 0.66 0.66

Height 500/673

Width 1500/1840Dimensions

(Outline/Package)Depth

mm

1000/1200

Weight(Net/Gross) kg 130/180 150/200 170/220

System Operation Control Wired Control with LED Display + Wireless Controller

Condensate Drainage(O.D) mm 25.4

IndoorUni

t

Air Filter Standard Washable Synthetic


7/86

CFGR/B-G(I)Indoor

Unit 20 25 30

CFGR/B-G(O)Models

Outdoor

Unit 20 25 30

Power Supply V/Ph/Hz 380/3/50Compressor Type Scroll

Nominal Current 12.5 15.8 17.6

L.R.AA

95 110 110

Vibration Isolator Rubber

Compressor

Protection Device Auto Reset Thermal Overload

Fan Type/Drive Inner Groove Copper Tube

Fan Speed rpm 660 730 730

Blade Material PlasticFan

Diameter mm 750 750 750Tube Material Inner Groove Copper Tube


No.of Rows/FPI 1/16 2/15 2/15

Coil Area Sqm 2.2 2.1 2.4

Sound Pressure Level dB(A) 61 66 67

Height 990/1162

Width 880/980Dimension


mm

1772/1950


Suction 1-1/8"

O

utdoorUnit

Pipe sizesLiquid

Inch5/8"


8/86

CFG/B-G(I)Indoor

Unit 20 25 30

CFG/B-G(O)Models

Outdoor

Unit 20 25 30

Btu/h 68243 85304 102360CoolingkW 20 25 30

Btu/h / / /

Nominal Capacity

At Rated ESPHeating

kW / / /


Cooling 8.5 10.2 12.1Power Consumption

HeatingkW

/ / /


HeatingA

/ / /

Refrigerant Type R22Refrigerant Charge kg 7 8 12



CFM 2354 2825 3237Air flow

m3/h 4000 4800 5500

Input Power W 1.1 1.1 1.5

Running Current A 2.8 3.0 3.6


Pa 90 90 130


Fan


(H/M/L/SL)dB(A) 54 54 57


Diameter mm 9.52 9.52 9.52

Material AluminumCoil

FinNo.of Rows/FPI 3/16 3/16 5/16

Coil Area Sqm 0.59 0.66 0.66

Height 500/673

Width 1500/1840Dimensions


mm

1000/1200




IndoorUnit



9/86

CFG/B-G(I)Indoor

Unit 20 25 30

CFG/B-G(O)Models

Outdoor

Unit 20 25 30



L.R.AA

95 110 110


Compressor







No.of Rows/FPI 1/16 2/15 2/15



Height 990/1162

Width 880/980Dimension


mm

1772/1950


Suction 1-1/8"

O

utdoorUnit

Pipe sizesLiquid

Inch5/8"


10/86

CFGR/B-G(I)Indoor

Unit 40 55 65

CFGR/B-G(O)Models

Outdoor

Unit 40 55 65

Btu/h 136490 187669 221790CoolingkW 40 55 65

Btu/h 146722 204730 238851

Nominal Capacity

At Rated ESPHeating

kW 43 60 70


Cooling 17 21.5 27.5Power Consumption

HeatingkW

14 19.5 22.8


HeatingA

27.3 38 44.3

Refrigerant Type R22Refrigerant Charge kg 13.2 17 19



CFM 4120 5297 6474Air flow

m3/h 7000 9000 11000

Input Power kW 2.2 3.0 3.3

Running Current A 4.5 6 8.4


Pa 130 160 160


Fan


(H/M/L/SL)dB(A) 58 60 62


Diameter mm 9.52 9.52 9.52



Coil Area Sqm 0.81 0.96 1.22

Height 650/835 700/885 850/1040

Width 1700/1890 1900/2090 1900/2090Dimensions


mm

1100/1460 1100/1460 1100/1460




IndoorUnit



11/86

CFGR/B-G(I)Indoor

Unit 40 55 65

CFGR/B-G(O)Models

Outdoor

Unit 40 55 65



L.R.AA

168 225 272


Compressor







No.of Rows/FPI 2/15 2/15 2/15



Height 1772/1890 1760

Width 1290/1460 1980Dimension


mm

880 920


Suction 1-3/8" 1-5/8"

O

utdoorUnit

Pipe sizesLiquid

Inch5/8" 7/8"


12/86

CFG/B-G(I)Indoor

Unit 40 55 65

CFG/B-G(O)Models

Outdoor

Unit 40 55 65

Btu/h 136490 187669 221790CoolingkW 40 55 65

Btu/h / / /

Nominal Capacity

At Rated ESPHeating

kW / / /


Cooling 17 21.5 27.5Power Consumption

HeatingkW

/ / /


HeatingA

/ / /

Refrigerant Type R22Refrigerant Charge kg 13.2 17 19



CFM 4120 5297 6474Air flow

m3/h 7000 9000 11000

Input Power kW 2.2 3.0 3.3

Running Current A 4.5 6 8.4


Pa 130 160 160


Fan


(H/M/L/SL)dB(A) 58 60 62


Diameter mm 9.52 9.52 9.52



Coil Area Sqm 0.81 0.96 1.22

Height 650/835 700/885 850/1040

Width 1700/1890 1900/2090 1900/2090Dimensions


mm

1100/1460 1100/1460 1100/1460




IndoorUnit



13/86

CFGR/B-G(I)Indoor

Unit 40 55 65

CFGR/B-G(O)Models

Outdoor

Unit 40 55 65



L.R.AA

168 225 272


Compressor







No.of Rows/FPI 2/15 2/15 2/15



Height 1772/1890 1760

Width 1290/1460 1980Dimension


mm

880 920


Suction 1-3/8" 1-5/8"

O

utdoorUnit

Pipe sizesLiquid

Inch5/8" 7/8"


14/86

CFGR/B-G(I)Indoor

Unit 50 60

CFGR/B-G(O)Models

Outdoor

Unit 50 60

Btu/h 170610 204730CoolingkW 50 60

Btu/h 180844 218378

Nominal Capacity

At Rated ESPHeating

kW 53 64


Cooling 20.7 24.5Power Consumption

HeatingkW

17.7 20.5

Cooling 38.9 46Running Current

HeatingA

34.5 39.9

Refrigerant Type R22Refrigerant Charge kg 28.0 212.0



CFM 5297 6474Air flow

m3/h 9000 11000

Input Power W 3.3 3.3

Running Current A 6 8.4

in.wg 0.64 0.64Rated ESP

Pa 160 160


Fan


(H/M/L/SL)dB(A) 60 62


Diameter mm 9.52 9.52


FinNo.of Rows/FPI 4/16 4/16

Coil Area Sqm 0.96 1.22

Height 700/885 850/1040

Width 1900/2090 1900/2090Dimensions


mm

1100/1460 1100/1460

Weight(Net/Gross) kg 230/280 250/300



IndoorUnit



15/86

CFGR/B-G(I)Indoor

Unit 50 60

CFGR/B-G(O)Models

Outdoor

Unit 50 60


Nominal Current 215.8 217.6

L.R.AA

2110 2110


Compressor



Fan Speed rpm 730 730


Diameter mm 750 750Tube Material Inner Groove Copper Tube


No.of Rows/FPI 2/15 2/15


Sound Pressure Level dB(A) 70 71

Height 1772/1950

Width 990/1162

Dimension

(Outline/Packag

e) Depth

mm

880/980

Weight(Net/Gross) kg 200/250

Suction 21-1/8"

O

utdoorUnit

Pipe sizesLiquid

Inch25/8"


16/86

CFG/B-G(I)Indoor

Unit 50 60

CFG/B-G(O)Models

Outdoor

Unit 50 60

Btu/h 170610 204730CoolingkW 50 60

Btu/h / /

Nominal Capacity

At Rated ESPHeating

kW / /


Cooling 20.7 24.5Power Consumption

HeatingkW

/ /

Cooling 38.9 46Running Current

HeatingA

/ /

Refrigerant Type R22Refrigerant Charge kg 28.0 212.0



CFM 5297 6474Air flow

m3/h 9000 11000

Input Power W 3.3 3.3

Running Current A 6 8.4

in.wg 0.64 0.64Rated ESP

Pa 160 160


Fan


(H/M/L/SL)dB(A) 60 62


Diameter mm 9.52 9.52


FinNo.of Rows/FPI 4/16 4/16


Height 700/885 850/1040

Width 1900/2090 1900/2090Dimensions


mm

1100/1460 1100/1460

Weight(Net/Gross) kg 230/280 250/300



IndoorUnit



17/86

CFG/B-G(I)Indoor

Unit 50 60

CFG/B-G(O)Models

Outdoor

Unit 50 60


Nominal Current 215.8 217.6

L.R.AA

2110 2110


Compressor



Fan Speed rpm 730 730


Diameter mm 750 750Tube Material Inner Groove Copper Tube


No.of Rows/FPI 2/15 2/15


Sound Pressure Level dB(A) 70 71

Height 1772/1950

Width 990/1162

Dimension

(Outline/Packag

e) Depth

mm

880/980

Weight(Net/Gross) kg 200/250

Suction 21-1/8"

O

utdoorUnit

Pipe sizesLiquid

Inch25/8"

Nominal capacities are based on the follow conditions.

Indoor Outdoor

CoolingDB27(80.6)

WB19(66.2)

DB35(95)

WB/(/)

HeatingDB20(68)

WB/(/)

DB7(44.6)

WB6(42.8)

Piping Length

1.4.2. Operation RangeIndoor unit dry / wet bulb Temp. Outdoor unit dry / wet bulb Temp

Max. Cooling 32/23 43/26

Min. Cooling 21/15 21/15

Max. Heating 27/- 24/18

Min. Heating 20/- -5/-6


18/86

1.4.3. Electrical Data

Compressor Fan Motor

Max. Fuse

Breaker Size

(Indoor/Outdoor)

Min.

Disconnect Size

(Indoor/Outoor)

Power

SupplyQty. RLA LRA

Condenser

Fan Motors

Supply

Blower

Motor

Model

VPhHz Each Each FLA Each FLA Each

Amperes Amperes

CFGR20/B-G 380,3,50 16.4 95 1.5 2.89A 38.4/6.5 22/3.62

CFG20/B-G 380,3,50 16.4 95 1.5 2.89 38.4/6.5 22/3.62

CFGR25/B-G 380,3,50 19.2 110 2.5 2.89 45.7/6.5 26.5/3.62

CFG25/B-G 380,3,50 19.2 110 2.5 2.89 45.7/6.5 26.5/3.62

CFGR30/B-G 380,3,50 22.1 110 2.5 3.7 52.22/8.33 30.13/4.63

CFG30/B-G 380,3,50 22.1 110 2.5 3.7 52.22/8.33 30.13/4.63

CFGR40/B-G 380,3,50 26.9 168 2.5 5.16 63.02/11.61 36.13/6.45

CFG40/B-G 380,3,50 26.9 168 2.5 5.16 63.02/11.61 36.13/6.45

CFGR50/B(2)-G 380,3,50 219.2 2110 2x2.5 6.78 91.4/15.26 53/8.48

CFG50/B(2)-G 380,3,50 219.2 2110 2x2.5 6.78 91.4/15.26 53/8.48

CFGR60/B(2)-G 380,3,50 222.1 2110 2x2.5 6.78 104.45/15.26 60.25/8.48

CFG60/B(2)-G 380,3,50 222.1 2110 2x2.5 6.78 104.45/15.26 60.25/8.48

CFGR55/B-G 380,3,50 34 225 2x2.5 6.78 81.5/15.26 47.5/8.48

CFG55/B-G 380,3,50 34 225 2x2.5 6.78 81.5/15.26 47.5/8.48

CFGR65/B-G 380,3,50 41.4 272 2x2.5 6.78 98.15/15.26 56.75/8.48

CFG65/B-G 380,3,50 41.4 272 2x2.5 6.78 98.15/15.26 56.75/8.48

Notes

RLARated load amperes

LRALocked rotor amperes

FLAFull load current


19/86

1.5. PIPING DIAGRAM

1.5.1. Cooling Only


20/86

1.5.2. Heat Pump


21/86

DC INVERTER U-MATCH AIR CONDITIONERS CONTROL

2. CONTROL

2.1. OPERATION FLOWCHART

2.1.1. Cooling/Dry Operation


22/86


2.1.2. Heating Operation


23/86


2.2. MAIN LOGIC

2.2.1. Cooling2.2.1.1. Single System

Cooling Mode

Compressor OFFON

OFFON

OFF

OFF ON

ON

Time

OFF

OFF

Manually OFF

OFF

Outer Fan

Inner Fan

way Valve

When Tamb

Tset

1

,cooling mode will be entered. In that case, compressor, outerfan and inner fan will run; Outer fan will firstly run for 15s and then, the compressor will

start running.

When Tamb Tset1,The unit will be in cooling Off status. Compressor and outer fan

will stop running but inner fan will run. The compressor will firstly stop running and 15s

later, the outer fan will stop.

When Tamb=Tset, compressor and outer fan keep the previous running status while the

indoor fan is running.


24/86


2.2.1.2. Dual Systems

Cooling Mode

Compresspor OFFON

OFF ON

OFF

OFFON

ON

Time

OFF

OFF

Manually OFF

OFF

Compressor OFFON

OFFON

OFF

OFF

Outer Fan

Outer Fan

Inner Fan

wayValve

wayValve

When the unit is on, if TambTset+ 1, the unit will run at cooling mode and inner fan runs

at setting speed. Outer fan firstly runs for 15s and then compressor A starts. When

compressor A runs for 15s, outer fan B will start running and 15s later, compressor B

starts.

During the running of the unit, every 6min, the unit will execute specific operation on the

below condition:

When Tamb Tset-1, compressor A will be Off and 15s later, outer fan A will be Off;

Inspection will be executed after 6 min. If the TambTser- 1, compressor B will be Off and

15s later, out fan B will be Off.

When TambTset+ 1, outer fan firstly runs for 15s and then compressor A will be On;

Inspection will be executed after 6min. If Tamb Tset+ 1, Outer fan B will firstly start

running and 15s later, compressor B will be On.


25/86


2.2.2. Dry Mode2.2.2.1. Single System

Dehumidification Mode

Compressor OFFON

OFFON

OFF

OFFON

ON

Time

OFF

OFF

Manually

OFF

OFF

Outer Fan

Inner Fan

way

Valve

When Tamb Tset2, cooling mode will be entered. In that case, compressor, outer

fan and inner fan will run. Outer fan will firstly run and 15s later, compressor will start.

When Tset2TambTset2, compressor and outer fan will run for 6min, and then

stop for 4min, which will be circularly executed, while the inner fan is running.

When TambTset-2 , compressor and outer fan will stop running. In that case,

compressor will firstly stop and 15s later, outer fan will stop.

2.2.2.2. Dual SystemsWhen the unit is ON: if TambTset2, the cooling mode will be entered. In that case,

inner fan will run at low speed, outer fan A firstly runs for 15s and then compressor A will

be ON. After compressor A runs for 15s, outer fan B will start and 15s later, compressor B

will start.


below condition:

When Tset2TambTset2, compressor A and outer fan A will run for 6min, and

then stop for 4min, which will be circularly executed, while the compressor B keeps the

previous running status.

When TambTset-2, compressor A will be OFF, and 15s later, outer fan A will be OFF.

Inspection will be executed after 6min and if TambTset-2, compressor B will be OFF

and 15s later, outer fan B will be OFF.


26/86


2.2.3. Heating Mode2.2.3.1. Single System

Heating Mode

Compressor

Outer Fan

Inner Fan

way

Valve

OFFON

OFFON

OFF

OFF

OFF

Time

OFF

OFF

Manually OFF

ON

ON

Cold-blast air proof

OFF OFF

OFF

OFF

ON running in specificconditionAuxiliary

Heater

When Tamb- TcomTset-1, heating mode will be entered. In that case, reversal valve,

outer fan and compressor will be energized to run while inner fan will run at cold-blast air

proof mode. At that time, outer fan will firstly run. 1s later, compressor will run and 20s

later after that, 4-way valve will run.

When Tamb-TcomTset,compressor, reversal valve and outer fan keep previous status

while inner fan is running.

When Tamb-TcomTset1, Compressor and outer fan stop running, reversal valve is

still energized and inner fan runs at blowing surplus heat mode (in that case, inner fan has

to keep running to avoid heat accumulation inside air duct.). At that time, compressor

stops firstly and 15s later, outer fan stops running.


27/86



ea ng o e

Compressor

Outer Fan

Inner Fan

wayValve

OF FON

OF F

ON

OF F

OF F

ON

Time

OF F

Manually OFF

ON

ON

Cold-blast Air Proof

OFF OFF

OFF

OF F

ON Running inspecific condition

wayValve

OF FON

OF F

Compressor

Outer Fan

OF FON

OF FON

OF F

OF F

OF F

AuxiliaryHeater

When the unit is turned on: if Tamb-TcomTset-1, Inner fan will run at setting speed

and cold-blast air proof mode. Outer fan will firstly run and 1s later, compressor A will

run and 20s later after that, 4-way valve will run; 15s later after startup of 4-way valve,

outer fan B will run, and 1s after that, compressor B will start. 20s later after startup of

compressor B, 4-way valve will run.


below condition:

When Tset-1Tamb-TcomTset+1, compressor, reversal valve and outer fan keep the

previous running status while inner fan runs at setting speed.

When Tamb-TcomTset+1,compressor A will be OFF. 15s later, outer fan A will be OFF

while reversal valve will still be energized; Inspection will be executed after 6min, if

Tamb-TcomTset+1, compressor B will be OFF.15s later, outer fan B will be OFF while

reversal valve will be still energized and inner fan will run at setting speed and blowing

surplus heat(In that case, inner fan has to keep running to avoid heat accumulation insideair duct.

When Tamb-TcomTset-1, outer fan will firstly run and 1s later, compressor A will run;

Inspection will be executed 6min later, if Tamb-TcomTset-1, outer fan B will run and

1s later, compressor B will run.


28/86


2.2.4. Defrosting2.2.4.1. Single System

Defrosting Mode

Compressor

Outer Fan

Inner Fan

wayValve

ON

ON

Enter

running atsetting speed

Time

OFF

Exit

ON

OFF

Cold-blast Air Proof

OFF

OFF

ON

ON ON

ON

ON

meet running conditions

ON

AuxiliaryHeater

Conditions of Defrosting ON

After accumulated heating time reaches 44min, if detect that Tcon. 5 for 1min,

defrosting will start. At that time, reversal valve, outer fan and auxiliary electric heater will

stop running, compressor will compulsive run, and inner fan will run at cold-blast air proof

mode ( inner fan is not ON when defrosting. When defrosting has finished and Teva.35

or Time45s, inner fan start running.

Conditions of Defrosting OFF

When defrosting has been executed for 10min, or Tcon. 10 exists for 1s,

defrosting will finished, and reversal valve and outer fan will run.

When defrosting is finished, 4-way valve will be switch firstly. Reversal valve and outer fan

will run at the same time.


Conditions of Defrosting ON

After accumulated heating time of any system (such as system A) reaches 44min,if detect

that its Tcon. 5 exist for 1min, in that case:

1Detect defrosting temp. sensor of other system(such as system B). When it defrosting

temp. sensor 10 , system A will enter defrosting and system B will be in


29/86


standby( compressor stops and 4-way valve is energized).If system B has been in standby,

it will continue. After defrosting has been finished, the system which finishes the defrosting

will turn to heating ( 4-way valve reverses) and then, The standby system will enter

heating.

Note: The standby time do no have to wait for 6min.

2If detect that the other defrosting temp. sensor is less than 10

a.If the compressor is running at that time, both two systems will enter defrosting. The

system which finishes defrosting firstly will be in standby. After two systems have

finished defrosting, they will enter heating respectively.

b. If it is in standby, and the time of being standby 3min, the two systems will enter

defrosting at the same time. The system which is firstly finished defrosting will be in

standby. After two systems have finished the defrosting, they will enter heating

respectively.

c. If it is in standby but the time of standby 3min, the system A will firstly enter

defrosting.(a) During defrosting of system A, if standby time of it (system B) 3min, the

system B will enter defrosting. The system which firstly finishes defrosting will

be in standby. After two systems have finished defrosting, they will enter heating

respectively.

(b)When system A has finished defrosting, if standby time of it( system B)3min,

system A will exit from defrosting. When the system B has stopped for 3min, it

will enter heating.

3When system enters defrosting mode, low pressure protection of related system will

be shielded.

4During defrosting and 3min later after defrosting is finished, inspection for temp.

sensor error of indoor evaporator of related system will be shielded.

5During defrosting, if there are other protections, they will be normally executed (but

super high temp. of indoor running of the two systems will be shielded). If the error can be

restored, after restoring the error and the compressor has stopped for 3min, it will run for

6min and then reenter defrosting.

Conditions of Defrosting OFF

(1) If only one system enters defrosting,and this system has been in defrosting mode for 10min or Tcon. 10exists for

1s, the defrosting of this system will be finished. This system will exit from defrosting.

(2) If both the two systems have entered defrosting,

and each system has been in defrosting mode for 10min or corresponding Tcon

10 exists for 1s, the system will finished defrosting respectively. The system which

finishes defrosting firstly will be in standby and until the other system has been finished

defrosting, they will

NoteDuring this course, there is 3min delay of compressor protection.


30/86


2.2.5. Fan ModeOnly inner fan is running.

2.3. WIRELESS REMOTE CONTROLLER

2.3.1. Operation View1) Controller-Duct Type

ON/OFFMODE

AUTO FAN

SWING

AUTO

SWING

OPER

AIR

FAN

NO. Name Function description

1 ON/OFF button Press the button to start or close unit

2 Mode buttonPress the button to select the mode, including

cooling, heating, fan or auto mode.

3 Increase/Decrease button Press this button to increase/decrease the setup temp

4 LCD Screen Display the status of remote information

5 Swing button Press this button to set swing function

6 Fan speed button Press this button to set fan speed

2) Controller-Cassette Type and Ceiling Type


31/86


ON/OFFMODE

LIGHT

AUTO

TIMER

ON/OFF

SWING HUMID

SWING

Auto Fan

SAVE

HR

AIR

FAN

OPER

TIMER

ON/OFF

ON/OFF

ANIONTIME OFFTIME ON

MODE

LIGHT

SLEEP

SAVE

HUMID

AIR

HR

LIGHT

AUTO FAN

SWINGHUMID

AUTO

SWING

SAVE

OPER

AIR

FAN


1 Swing button Press this button to set swing function

2 Increase/Decrease button Press this button to increase/decrease the setup temp

3 Mode button

Press the button to select the mode, including

cooling, heating , fan or auto mode.

4 ON/OFF button Press the button to start or close unit

5 LCD Screen Display the status of remote information

6 Fan speed button Press this button to set fan speed

7 Sleep button Press the button to set sleep function

8 Time on Press the button to set time on function

9 Time off Press the button to set time off function


32/86


2.3.2. Display View

LIGHT

AUTO

TIMER

ONOFF

SWING HUMID

SWING

AUTO FAN

SAVE

HR

AIR

FAN

OPER

No. Display Function description

1 Fan Speed

auto fan speed low fan speed

middle fan speed high fan speed

2 Run Mode

Auto Running Cool Running

Dry Running Fan Running

Heat running (Heat and Cool unit only)

3 Setup temp Temperature value of setting

4 Swing function Swing is on

5 Sleep mode Sleep mode is on

6 Time value Timing value of setting

7 OPER The controller is on


33/86


2.4. WIRED REMOTE CONTROLLER

2.4.1. Operation View

MODE

ON/OFF

SLEEP

TIMER


1 MODE button

Press the button to select the mode,

cooling , heating , fan or auto mode.

2 Increasing button Press this button to increase the setup temp.

3 Decreasing button Press this button to decrease the setup temp.

4 Fan speed button The button is invalid

5 Sleep button Press the button to set sleep/swing function

6 Timer button Press the button to set timer function

7 On/off button Press the button to start or close unit

8 Remote window Get remote information

9 LCD display Display unit information

Note:

1) MEMORY function setup: When the unit is turned off, press MODE button for 10

seconds, to switch ON/OFF of the unit after powered off.

2) Lock function: Press and at the same time for 5 seconds, the set temp. will

display EE and shield, all buttons will sound; and repress theand at the same

time for 5 seconds, the lock function will be released.(for details, please read

corresponding parts of manual).


34/86


2.4.2. Display View

MODE

ON/OFF

SLEEP

TIMER


1 Timer value Display time value

2 Timer on/off: display timer on, : display t imer off,

3 Fan speed displaywhen fan is on, displays circularly; when fan is off,

nothing displays.

4 Set temp display Display set temp value, its range is 16~30

5 Run mode display: auto mode, : cool mode, : dry mode,

: fan mode, : heat mode(only cool and heat unit)

6 Indoor temp display Display surrounding temp indoor

7Outdoor temp

displayThe display is invalid

8 Frost display When unit frosts, it display

9 Sleep display Display sleep at Sleep mode

10 Swing display The display is invalid (no swing function)

11 Error display When unit error, error code display


35/86


2.4.3. Dimension

2.4.4. Installation First select an installation position. According to the size of the communication line of

the wire controller, leave a recess or an embedded wire hole to bury the

communication line.

If the communication line between the wire controller (858520) and the indoor unit

is surface-mounted, use 1# PVC pipe and make matching recess in the wall (refer to

Figure 6); If concealed installation is adopted, 1# PVC pipe can be used (Refer to

Figure 7).

No matter if surface mounting or concealed mounting is selected, it is required to drill

2 holes (in the same level) which distance shall be the same as the distance (60mm)

of installation holes in the bottom plate of the wire controller. Then insert a wood plug

into each hole. Fix the bottom plate of the wire controller to the wall by using the two

holes. Plug the communication line onto the control panel. Lastly install the panel ofthe wire controller.

Caution:

During the installation of the bottom plate of the wire controller, pay attention to the

direction of the bottom plate. The plates side with two notches must be at the lower

position, and otherwise the panel of the wire controller cannot be correctly installed.


36/86


PVC pipe

Fig6Surface Mounting of Cable Fig7Concealed mounting of Cable

1 32 4

Fig 8 Schematic Diagram of Installation

No. Name

1 Wall Surface

2 Bottom Plate of Wire Controller

3 Screw M4X10

4 Panel of Wire Controller

Caution:

The communication distance between the main board and the wire controller can be

as far as 20m (The standard distance is 8m).

The wire controller shall not be installed in a place where there is water drop or large

amount of water vapor.

2.5. CENTRALIZED CONTROLLER

2.5.1. Centralized Controller-not with week timer2.5.1.1. Function

Centralized Controller-not with week timer only control on-off function of every unit.

Up to 16 sets of units can be controlled simultaneously by the centralized controller-not


37/86


with week timer.

2.5.1.2. Operation View


1 ON button Press the button to set start unit

2 OFF button Press the button to set close unit


4 LED LED indication

5 Increasing / Decreasing button Press buttons select the unit

2.5.1.3. Display View

Display unit address value in the net.


38/86


2.5.1.4. Dimensions

2.5.2. Centralized Controller-week timer2.5.2.1. Function

Centralized Control and Week Timer Functions: The centralized controller and the

weekly timer are integrated in the same wire controller. The system has both the

centralized control and the week timing functions. Up to 16 sets of units can be controlled

simultaneously by the centralized controller (weekly timer). The weekly timer has the

function of invalidating the lower unit. The weekly timing function is able to realized four

timing ON/OFF periods for any unit every day, so as to achieve fully automatic operation.

No timing control can be set for holidays. On and off of every duct type unit can be done

through the Timer On/Off of this WEEKLY TIMERit can not set other functions except

on-off function of units.


39/86


2.5.2.2. Operation View


1 ENTER button Press the button to let setting validate.

2 Increasing buttonPress and selected the unit or a certain day in one week or specific

value. Press can set week part of time.

3 Decreasing buttonPress and selected the unit or a certain day in one week or

specific value. Press can set week part of time.

4

CANCEL/DELET

E

button

short-press cancel/delete to back to default page or last process,

long-press cancel/delete to cancel timer of a certain time period in a

certain day

5

SINGLLE/GROU

P

button

short-press single/group to enter single control setting. SINGLE

displayed. long-press single/group to enter group control setting.

GROUP displayed

6TIMER/TIME

button

Short-press timer/time to enter timer setting.

Long-press timer/time under default page can begin time setting.

7 On/off button Press the button to set start or close unit



40/86


2.5.2.3. Display View


1 units no. displays Display units numbers

2 Group control displays when group controls, it will display

3 Single control displays when single unit controls, it will display

4 Timer time in week displays Display time in week

5 Timer displays Display time

6 timer state displayson: when set unit on, on will display;

off: when set unit off, off will display;

7 timer on time displays Display starts time

8 on control displays When set unit or group on, it will display,

9 off control displays When set unit or group off, it will display,

10 present time in week display Display present time of week.

11 present time in Hr:Min displays Display time of hour and minute now

12 timer off time displays Display over time

13 timer period displays Set to different time segment

Note:

Please read corresponding manual of weekly timer controller to be familiar with it.


41/86


2.5.2.4. Dimensions

2.5.3. Field SettingS/N of each unit is displayed on centralized control device: S/N of the unit is decided by

the position(on the back of wired controller) of DIP switch of wired controller of each air

duct type unit. From right to left, code is corresponding to rod 4~1 of DIP switch. That dial

it to ON position means 0and that dial it to OFF position means 1.

Example 1: Code 0111means S/N 8. Rods 1,2,3 are dialed to the opposite side of ON

and rod 4 is dialed to the position ON.

Example 2: Code 1010means S/N 11. Rods 2 and 4 are dialed to the opposite side of

ON and rods 1 and 3 are dialed to the ON position.

Position S/N Position S/N Position S/N Position S/N

0000 1 0100 5 1000 9 1100 13

0001 2 0101 6 1001 10 1101 14

0010 3 0110 7 1010 11 1110 15

0011 4 0111 8 1011 12 1111 16

Please see the below:


42/86


Unit S/N:10000

Unit S/N:20001

Unit S/N:30010

Unit S/N:40011

Unit S/N:50100

Unit S/N:60101

Unit S/N:70110

Unit S/N:80111

Unit S/N:91000

Unit S/N:101001

Unit S/N:111010

Unit S/N:121011

Unit S/N:131100

Unit S/N:141101

Unit S/N:151110

Unit S/N:161111

2.5.4. Control Wiring Design

16 Units in Max

Week timer Wired remote controller

LCD LCD LC

Wired remote controlle

Telephone wire box Telephone wire box Telephone wire box

Twisted-wire with crystal joint

Longest distance 1200m

AC-LAC-N

Power supply

Corresponding relation between code switch and sequence of unit

(Note:Putting code switch to ON means 0.)


43/86


P S P S P S P S

0000 1 0010 5 0001 9 0011 13

1000 2 1010 6 1001 10 1011 14

0100 3 0110 7 0101 11 0111 15

1100 4 1110 8 1101 12 1111 16


44/86


3. INSTALLATION

Caution for Installation

Before installation, please make sure that the selection of installation site, specification of

power supply, the application range( distance of piping, drop height between the indoor

and the outdoor and voltage of power supply) and insllation space are correct and

suitable.

There are warnings and note below. Severe accidents including casualty or

serious injury which may be caused by improper installation are belong to the

warning group. However, even the items in note group may cause serious accidents

sometimes. Therefore, both of them are very important contents which have be to strictly

complied with.

After finishing installation, try to run it and make sure that the unit is in good conditon.

Then, introduce operation and maintenance methods to users according to operation

instruction. Besides, this cautions and operation instructions should be given to users and

suggest them keeping them well.

Warning

1Installation shall be executed by distributors of the unit or professional shop. Dont

install it by yourself or improper installation may cause leak, electric shock and

fire,etc.

2Installation has to strictly comply with installation manual. Improper installation will

cause leakage, electric shock and fire, etc.

3If install big air conditoner system in small room,the measures which prevent the l

eakage of refrigerants from exceeding limit concentration must be adopted and

should be disscused with the distributor. If proper measures are not adopted and

there is leakage of refrigerants , peoples suffocation may be caused..

4Please install it in the place which can fully withstand the weight of the unit or the


45/86


unit will fall to injure people.

5Please execute typhoon proof and earthquake proof installations or the unit will be

overturned.

6Electric wiring shall be executed by qualified electrician and shall comply with

Safety Standards of Electric Equipment,related local rules and installation

instructions.

7Suitable cable shall be applied when wiring. Please fix the joints of fixed

termination to avoid that the outside force imposed on the cable affects the

connection of the joints.Improper connection and fixation will cause generation of

heat, fire,etc.

8Wiring shall be kept correctly and dont convex. Please protect it with maintenance

board. Improper installation will cause generation of heat, fire, etc.

9When installing and removing the air conditioner, Dont interfuse air except for

indicated refrigerants. If there is air in cooling circulation system, abnormal high

pressure will be caused that will resulte in cracking and peoples injury.

Packaged parts or indicated parts shall be applied when installation. If not, water leakage,

electric shock, fire and refrigerants leakage,etc.will be resulted in.

Note:

1Earthing must be executed. Dont connect earth line with gas pipe, water

pipe,lightning arrester or earth line of telephone. Improper earthing may cause

electric shock.

As air-conditioning unit is of Class 1 electrical appliance, reliable grounding

measures must be taken for it.

The double color (yellow and green) cable inside the unit is specially used for

grounding, so it shall not be used for other purposes nor can it be cut. Do not tighten

with tapping screws; otherwise it might cause risk of electric shock.

Installation of earth resistance should be in accordance with the national standards


46/86


GB17790.

The user power supply shall have reliable grounding terminal. It is prohibited to

connect the grounding wire to the following items:

Water Supply Pipe Gas Pipe Sewage Pipe Other positions that are considered

to be unreliable by professionals.

2Creepage breaker must be installed in specific sites. If not, electric shock will be

resulted in.

3Dont install it in the place which may has the leakage of flammable gas. In the

event that the leaked gas is accumulated around the unit, fire may be caused.

3.1. INDOOR UNIT INSTALLATION

3.1.1. Installation Site Avoid the direct sunshine.

Make sure that the suspension bracket is strong enough to withstand the units

weight.

Select a place for easily connection of the drain hose.

The inlet and outlet ports should not be obstructed so that the indoor air

circulates well.

Make sure that the convenient connection of the connecting pipes. Select a location that is far away from the combustible or explosive material and

gas.

Select a location that is far away from the cankerous material, frog, dusk or

moist.

3.1.2. Dimension Data

unitmm

Model a b c d e f


47/86


FG20/B-G FGR20/B-G

FG25/B-G FGR25/B-G

FG30/B-G FGR30/B-G

1560 910 1194 1194 292 342

b

d

a

f

e

c

unitmm

Model a b c d e f

FG40/B-G FGR40/B-G 1780 1040 990 295 1450 555

FG50/B(2)-G FGR50/B(2)-G

FG55/B-G FGR55/B-G1980 1040 1120 1650 347 600

FG60/B(2)-G FGR60/B(2)-G

FG65/B-G FGR65/G-G1980 104 1120 1650 347 755


48/86


3.1.3. Installation Clearance Data

Air supply

Air return

Suspender

Hook

Flatwasher

Spring

washer

Nut

installation of suspender

>1000

>1,000 >560

3.1.4. Drain Piping Work

A

B

For easy drainage of the condensation water, It should be installed with a downward

gradient. To avoid the condensation, the connection pipe joint should be insulated with

thermal insulation material. A water seal should be employed as shown above and the

height of the water seal could be determined by the pressure of the drain hose.

Drain hose is in negative pressure state: A = BP/10+20 (mm)

Drain hose is in positive pressure state: A30mmBP/10+20 (mm)

Note: P is the absolute pressure of the drain hose position, Pa


49/86


3.2. OUTDOOR UNIT INSTALLATION

3.2.1. Installation Site Outdoor unit should be installed in a steady and stable place.

To reduce the length of the refrigerant pipe and bend number, make sure theindoor unit and outdoor unit be close to each other.

Ensure that the operation noise do not disturb neighbors and passerby.

Do not install the unit where it will be exposed to direct sunlight or other radiation

heat source, or the awning or a rainproof cloth should be utilized.

The inlet and outlet port should not be blocked.

Make sure the well air circulation.

Select a location that is far away from combustible or explosive material, dust,

fog or moist.

3.2.2. Dimension Data

1772

A 880

840

C2

B2

8442

Unit: mm

Model A B C

FG20/B-G(O) FGR20/B-G(O)

FG25/B-G(O) FG25/B-G(O)FG30/B-G(O) FG30/B-G(O)

990 787 337

Dont connect any air leading duct to the outdoor unit, at neither the air inlet nor the air

outlet. The outdoor unit will drop condensate while running at heat mode. If the temp is

minus, it will form ice. Dont let the rain proof interfere the ventilation of outdoor unit.


50/86


FG40/B-G(O) FGR40/B-G(O) 1290 1160 850

A

H

C

B

E2

D2

F2

Unit: mm

Model A B C D E F H

FG55/B-G(O)

FGR55/B-G(O)1980 840 920 1400 460 880 1760

3.2.3. Installation Clearance Data

>1200

>1000

>1

000

>1000

>3000

Side with Electrical Box


51/86


>300 >300 >300

3.3. REFRIGERATION PIPING WORK

3.3.1. Caution in Connecting Pipes

The connection of the pipes should conform to the following principles:

Make sure to lessen the length of connecting pipe, the height difference between the

indoor and outdoor unit, and the number of bends, and enlarge the diameter of

bends.

The permitted maximum value of each case:

Height difference between the indoor and outdoor unit 30M

900Number of bends 12

Length of connecting pipes 70M

The pipe meld type could be employed for the connection of the pipes between the

indoor and outdoor units.

The pipe joint should be tightly connected when a pipe joint is employed between two

pipes. It is better to use only one connecting pipe if the distance is not far.

The pipes should not be shriveled when the pipes are connecting. The bend diameter

should be longer than 200 millimeter. The connecting pipes should not be extendedor curved frequently and the curving process should not be larger than 3 times in the

same bending position.

Note: Do not loosen the cap of the pipes when connecting the pipes between the indoor unit and the

outdoor unit. Connect the pipes as soon as possible after loosening the cap of the pipes to avoid the

entering of water and dusk. A metal pipe should be utilized if a pipe should be installed through a wall.


52/86


3.3.2. Specification of Connecting PipeExternal

Diameter

Model Gas

Pipe

(mm)

Liquid

Pipe

(mm)

Maximum

Length

of ConnectionPipe

(m)

Maximum

Difference in

Height betweenOutdoor and

Indoor Unit (m)

Max. Qty of

Elbows(90o)

Additional

Charge of

Refrigerant

(g/m)

FG20/B-G

FGR20/B-G

FG25/B-G

FGR25/B-G

FG30/B-G

FGR30/B-G

28 16

FG40/B-GFGR40/B-G

35 16

70 30 12 180g/m

FG50/B(2)-G

FGR50/B(2)-G

2

28

2

16270 230 212 2180g/m

FG55/B-G

FGR55/B-G42 22 70 30 12 350 g/m

FG60/B(2)-G

FGR60/B(2)-G

2

28

2

16270 230 212 2180g/m

FG65/B-G

FGR65/B-G

42 22 70 30 12 350 g/m

3.4. ELECTRIC WIRING WORK

3.4.1. Wiring Principle All of the supplied components, material, and electric operation should be

accorded with the local principles.

The power supply should adopt the rated voltage and special circuit for the

ducted air-conditioning unit.

About the electric working, please refer to the circuit diagram adhering to the

unit.

All the connection of the circuit should be carried out by the qualified electrician.

A circuit breaker that can cut all the power supply of the system should be

installed. Wiring diagram of the ducted air-conditioning unit is shown in Fig. 32.

The units should be well earthing to the ground by professionals.

Install a central switch which can cut all the power switch and air switch of the

system.

The air switch should have hot and magnetic auto-turn-off function to protect the

system from overloading or short power.

Please accord to electrical diagram on the unit when connecting the wires.1) Open indoor electric box and outdoor electric box respectively and put the wires


53/86


cross the electric boxes. Please choose the specification of the power cables

according to the power capacity and the installation conditions of the unit. Fix the

wires with wire clamp and assemble the electric cover after confirmation.

2) If ON/OFF function of the sub room unit is needed, the short wiring between L3

and A should be taken off and wired according to the dashed frame. If all of the

sub rooms are turned off, the unit will be switched off, or you can turn off the unit

from the control panel directly. In the meantime, you can set the parameters on

the control panel.

3) The wiring schematic of the outdoor unit, please refer to Fig 32, while the power

cord standard and air-switch type, please refer to recommending table 4.

3.4.2. Electric Wiring DesignSpecification of Power Supply Wire and Air Switch


54/86


3.4.3. Specification of Power Supply Wire and AirSwitch

ModelPower Supply

(V,Ph,Hz)

Capability of

Air Swith(A)

Minimum

Sectional Area of

Earth Wire(mm2)

Minimum Sectional

Area of Power

Supply Wire(mm2)

FG20/B-G(I) 380,3,50 10 1.5 1.5

FGR20/B-G(I) 380,3,50 16 2.5 2.5

FG25/B-G(I) 380,3,50 10 1.5 1.5

FGR25/B-G(I) 380,3,50 16 2.5 2.5


55/86


FG30/B-G(I) 380,3,50 10 1.5 1.5

FGR30/B-G(I) 380,3,50 20 4.0 4.0

FG40/B-G(I) 380,3,50 10 1.5 1.5

FGR40/B-G(I) 380,3,50 25 4.0 4.0

FG50/B(2)-G(I) 380,3,50 16 2.5 2.5

FGR50/B(2)-G(I) 380,3,50 25 4.0 4.0

FG60/B(2)-G(I) 380,3,50 16 2.5 2.5

FGR60/B(2)-G(I) 380,3,50 25 4.0 4.0

FG55/B-G(I) 380,3,50 16 2.5 2.5

FGR55/B-G(I) 380,3,50 25 4.0 4.0

FG65/B-G(I) 380,3,50 16 2.5 2.5

FGR65/B-G(I) 380,3,50 25 4.0 4.0

FG20/B-G(O) 380,3,50 32 6.0 6.0FGR20/B-G(O) 380,3,50 32 6.0 6.0

FG25/B-G(O) 380,3,50 32 6.0 6.0

FGR25/B-G(O) 380,3,50 32 6.0 6.0

FG30/B-G(O) 380,3,50 40 10.0 10.0

FGR30/B-G(O) 380,3,50 40 10.0 10.0

FG40/B-G(O) 380,3,50 50 16.0 16.0

FGR40/B-G(O) 380,3,50 50 16.0 16.0

FG55/B-G(O) 380,3,50 63 25.0 25.0

FGR55/B-G(O) 380,3,50 63 25.0 25.0

FG65/B-G(O) 380,3,50 63 25.0 25.0

FGR65/B-G(O) 380,3,50 63 25.0 25.0


56/86


MAINTENANCE


57/86


4. MAINTENANCE

4.1. TROUBLE TABLE

Trouble Code Trouble

NameOrigin of Trouble Signal Control Description

High Pressure

Protection

E1

Pressure Switch (high

pressure)

Pressure ProtectionSwitch

Discharge pressure of system has a great of impact on the

performance and reliability of the unit much. When condensing

pressure is extremely high, the corresponding discharge temp.

compression ratio and power consumption will increase while

cooling capacity will decrease. If the unit is working under

extremely high discharge temp. for long time, lubricant is easily

charred so that the unit cannot be well lubricated and thencompressor will be damaged. When the discharge pressure

exceeds the safety range, high pressure protection will be

executed, error code will be displayed and the unit will stop. After

finding out the cause and solve the problem, de-energize the unit

and then re-energize it to clear the error display.

Indoor

Anti-freezing

Protection

E2Tube Temp. sensor of the

Indoor Unit

Under cooling or dehumidification mode, if detect that the temp of

evaporator is less than a specific value, compressor will stop,

inner fan will keep previous status and E2 will be displayed on

display board. When compressor has stopped for a period timeand the temp. of evaporator is larger than a specific value, the

error will be cleared and the unit will run at setting mode.

Low Pressure

Protection E3 Low Pressure Switch

When the suction pressure of system is extremely low, not only

the unit runs badly but also the face of the evaporator is easily

frosted. Once frosting, infernal circle may be caused which makes

more frost. At the same time, refrigerants cannot be completely

evaporated so that the compressor may inhale refrigerants in

liquid state and it will be damaged. Besides, suction temp and

discharge temp are also low and fluidity of lubricant becomes bad,which will further affect the lubrication of the unit and damage the

compressor. When suction pressure is lower than safety value,

low pressure protection will be executed, error code E3 will be

displayed and the unit will stop. After finding out the cause and

solve the problem, de-energize the unit and then re-energize it to

clear the error display.

High Temp

Protection of

discharge pipeo f compressor

E4 Discharge Temp Sensor

Discharge temp of compressor directly reflects the temp. of

working environment inside the compressor, especially the temp.

of electric coil of motor. High temp. will result in decomposition oflubricant inside the compressor, which decrease the performance


58/86


of the lubricant. After running of compressor, if detect that the

temp. of discharge pipe of compressor is higher than the limit

value, it is believed that high temp. protection of discharge pipe of

compressor is executed. Compressor and outer fan will be turned

off and error code E4 will be displayed. If detect that the temp. of

discharge pipe decreases to the specific value, compressor will

restart running. If detect the protection above for continuous a few

times, the compressor cannot restart running until it is

re-energized.

Overload

Protection of

Compressor

E5Overload Switch of

Compressor

When the compressor is working normally, there is a range of

running parameters. If parameter (such as current) is higher than

upper limit, it is believed that it enters the overload protection. In

that case, compressor has deviated from stable running, which

need to be adjusted or protected. Once there is overload

protection, compressor and outer fan will be turned off and error

code E5 will be displayed. If the error is recovered, the

compressor will restart running. From the first error detected, if a

few of overload protections of the compressor have been

continuously detected, it cannot automatically recover.

Re-energize it so that it can restart running.

Communication

ErrorE6 Terminal Interface Port

After energization, If there is no message back from mainboard of

indoor unit, it is believed that there is communication error of the

indoor unit. Compressor and outer fan will stop. At the same time,if the indoor unit has not received the message from the outdoor

unit, auxiliary electric heater of the indoor unit will stop. If inner fan

and wired controller have not received the message from the

outdoor unit, error code E6 will be displayed and the unit will be

on standby.

Inner Fan

ProtectionE8

Motor Switch of Fan or

Thermal Relay

After startup of inner fan, if detect that overload message of fan is

break up for continuous 3s, all loads will be turned off, E8 will be

displayed and buzzer will sound.

Incorrect ON

Protection of

Auxiliary

Electric Heater

EH Relay

After detecting that the electric heater is incorrectly turned on,

other loads will stop, inner fan will be turned on, EH will be

displayed and buzzer will sound.

Indoor Ambient

Temp Sensor

Error

F0 Indoor Temp Sensor

If detect that temp is higher or lower than limit value, it is believed

that there is error of temp. sensor. Measure its resistance to judge

if it is normal.

Ambient temp. detected by temp. sensor is an important

parameter to determine the running status of the unit.

Temp. Sensor

Error ofF1 Temp. Sensor

If detect that temp. is higher or lower than limit value, it is believed

that there is temp. sensor error. Measure its resistance to judge if


59/86


Evaporator it is normal.

Temp. Sensor

Error of

Condenser

F2 Temp. Sensor

If detect that temp. is higher or lower than limit value, it is believed

that there is temp. sensor error. Measure its resistance to judge if

it is normal.

It cannot be measured on the cooling-only unit.

Outdoor

Ambient Temp.

Sensor ErrorF3 Temp. Sensor

If detect that temp. is higher or lower than limit value, it is

believed that there is temp. sensor error.

Outdoor ambient temp. sensor is not handled and only E3 is

displayed.

It cannot be measured on the cooling-only unit.

Discharge

Temp. Sensor

Error

F4 Temp Sensor

If detect that temp. is higher or lower than limit value, it is

believed that there is temp. sensor error. Measure its resistance

to judge if it is normal.

Error Code E4 will be displayed and buzzer will sound( if it

is wired controller, there is no such function). After clearing the

error, running will be automatically resumed and error code will be

cleared too.


60/86


4.2. FLOW CHART OF TROUBLESHOOTING

4.2.1. High Pressure Protection


61/86


4.2.2. Low Pressure Protection


62/86


4.2.3. Discharge Protection

4.2.4. Overcurrent Protection( Overload Protection ofCompressor)


63/86


4.2.5. Communication Error

4.3. WIRING DIADRAM

4.3.1. DISASSEMBLY AND ASSEMBLY PROCEDURE OF MAINPARTS

4.3.1.1. Outdoor UnitDisassembly and Assembly of external casing

Remark :

Step

1. Dismantle the front panel

Handling Instruction

Instructions Unscrew the

bolts with screwdriver; lift

it up with hands on handles

and hold it outwards. Then,

the front panel is dismantled.

2. Lift it up

with hands

on handles.


64/86


2. Dismantle streamlined

dome, front cover plate and

rear cover plate.

Unscrew retaining screws

of streamlined dome and

remove it After removing

streamlined dome, unscrew

the bolts of front and rear

cover plates by spanner.

3. Disassemble retaining plateas well as left and right side

plates to finish the

disassembly of the whole

external casing.

Unscrew bolts of retainingplate to remove it by

screwdriver.Unscrew the

bolts of right and left side

plates to remove it by

screwdriver.

Process of installation of external casing isleft and right side platesretaining plate

front and rear cover platestreamlined domefront panel. Please refer to disassembly processfor the cautions.

Disassembly and Assembly of Compressor

Remark : Make sure that there isnt any refrigerant in pipe system and the power supply is cut off before

removal of the compressor..

Step Illustration Handling Instruction

1. Unscrew

the bolts on

front panel.

1. Streamlined

Dome

2. Front cover plate;

Rear cover plate is

on the symmetry

plane

2. Left

Side Plate

3. Right

Side Plate

1.Retaining

Plate


65/86


1Disconnect the electrical

source wire

Relax the screws with the

screwdriver.Draw out the

electrical source wire

Note:Earmark the colour of

wire corresponding to theterminal when removing the

wire , the mistakes can be

avoided when renewing the

wire connection.

2. Cut off the connection

between compressor and

pipes

Burn the discharge outlet

and suction inlet by welding

head and pull the pipe by

pinchers.

Note: Dont touch the pipedirectly by hand during this

course to avoid being hurted.

3.Take down the compressor

from the bottom pan

Unscrew the retainingnuts of the compressor.

lift the compressor fromchassis by lifting

equipment.

Note: be cautious during this

to prevent the compressor

from falling.

The installation process follows the reverse order of disassembly.

Disassembly and Assembly of 4-way valve

Remark:

Step IllustrationHandling Instruction

1. Unsolder and then pull

out the pipe connected

with valve body.

Unscrew retaining bolts

fixing magnetic coil of

4-way valve.

Remove magnetic coil

Unsolder the weld

1. weld off

and pull

out suction

pipe and

discharge

pipe

1. Unscrew

the 4

retaining

nuts of the

compressor

1. Earmark the

colour of wire

corresponding to

the terminal

when removing

the wire


66/86


points connecting 4- way

valve and other pipeline

Remove 4-way valve.

Note: When soldering,dont flame other

components and wrap the

valve body with wet cloth

to avoid damage to the

valve.


Disassembly and Assembly of electronic expansion valve

Remark:

Step IllustrationHandling Instruction

1. Remove electric coil of

electric expansion valve

2. Unsoldering and pull out

the pipe connecting electric

expansion valve.




pinchers.

Note: When soldering, dont

flame other components and

wrap the valve body with wet

cloth to avoid damage to the

valve.

Disassembly and Assembly of Vapour Liquid Separator

Remark :


1. Unsolder and remove outlet

pipe and inlet pipe

2.

Unscrew retaining nuts




pinchers.

Unscrew the retainingnuts.

Unsolder

weld points

and pull out

pipe

1 Inlet

Pipe

Valve

Body

Magnetic

Coil

Weld

Points (4)


67/86



Disassembly and Assembly of Fan and Fan Motor

Remark:


Unscrew retaining

bolts in corners of top

grill

Unscrew fan retaining

nuts and remove the

washer of nut. Then pull

up the fan blade.

2. Outlet

Pipe

3. Retaining

Nuts of

Compressor


68/86


Remove top grill and

fan blade as shown

above.

Disassemble the wire

of motor from electric

box. Remove retaining

bolts of motor.

Remove motor

upwards.

Note: due to heavy

weight of motor, please

be cautious when lift it in

case any damage is

occurred.

Disassembly and Assembly of electric box

Remark:


1. Disassemble panel lift it up with hands on

handles and hold itoutwards. Then, the front

panel is dismantled.1. Panel


69/86


2. Disassemble electric box Unscrew retaining bolts of

electric box and lift it t to

remove it.

4.3.1.2. Indoor Unit

Disassembly and Assembly of electric box

Remark:


1. Unscrew bolts ofelectric box

2. disconnect wiring3. disassembly of

electric box isfinished.

Unscrew retaining

bolts of the cover to

remove it.

Disconnect power

cord and control wire

and pull them out.

Unscrew retaining

bolts to remove

electric box ( as

shown on left.)

The installation process follows the reverse order of disassembly

Disassembly and Assembly of electrical heating tube

Remark:


1. Unscrew the retainingbolts in the cover plate

2.

1. Unscrew

bolts

1. Unscrew bolts

and disconnect

power cord on

wiring terminals

Retaining Bolts


70/86


Disassembly and Assembly of evaporator

Remark:


1.

Disassembly and Assembly of fan and fan motor

Remark:


1.

Electrical

Heating

Tube


71/86


Disassembly and Assembly of belt and belt pulley

Remark :


Unscrew bolts of

retaining plate of motor.


72/86


u Unscrew bolts of

adjusting plate of motor

to adjust distance

between two belt

rollers and then removethe belt.

Install new belt.

Screw bolts of

retaining plate of motor

tightly.

Screw bolts of

adjusting plate of motor

and then adjust the

distance between two

belt rollers to strain the

belt.

Disassembly of belt

roller

Disassemble belt

following the steps

above.

Anti-clockwise screw

two of screws by inner

hexagon spanner

Clockwise screw

screws by inner

hexagon spanner (the

screw locates the

opposite angle of the

hole without screw.


73/86


Separate belt roller

and axile bush.

Insert screwdriver into

axile bush and pull it out

fiercely to disassemble

axile bush.

Disassemble belt

roller.

Install the new belt

roller.


74/86


Install axile bush.

Screw clockwise the 3

screws

Install belt following

the handling instruction

above and adjust the

belt.

If there is any omission, please supplement it accordingly.


75/86


4.4. EXPLODED VIEWS AND PART LIST

4.4.1. Outdoor Unit

5.6.

CFG(R)20/B-G(O)CFG(R)25/B-G(O)CFG(R)30/B-G(O)parts list

Qty

CFG(R)20/B-G(O) CFG(R)25/B-G(O) CFG(R)30/B-G(O)S/N Name Code

Cooling

Only

Heat

Pump

Cooling

Only

Heat

Pump

Cooling

Only

Heat

Pump

1 Base Plate Sub-Assy 01195703P 1 1 1 1 1 1

0302907601 1 12 4-way Valve with coil

04145712 1

3

Electric Expansion Valve

Sub-Assy 0733521801 1 1 1 1 1 1


76/86


4 Gas valve sub-assy 07109067 1 1 1 1 1 1

5 Liquid valve sub-assy 15018303 1 1 1 1 1 1

04635707 1 16

Discharge Tube

Sub-Assy 03819098 1 1 1 1

00120040 1 1

00100043 1 17 Compressor and Fittings

00100

Documents

Serv Manual CARDIFF T1 R22 Big Duct Type