Gree GWC36LB-D3NNB2A, GWC36LB-D3NNB2A/I, GWC36LB-D3NNB2A/O, YV1FB7 Service Manual

GREE ELECTRIC APPLIANCES,INC.OF ZHUHAI

Change for Life

Service Manual

GWC36LB-D3NNB2A
(Refrigerant R410A)

Model:

Service Manual

Table of Contents

Part

Ⅰ

: Technical Information

.......................................................................1

1. Summary

......................................................................................................................1

2. Specications

..........................................................................................................2

2.1 Specication Sheet ...........................................................................................................2

2.2 Capacity Variation Ratio According to Temperature .........................................................4

2.3 Cooling and Heating Data Sheet in Rated Frequency .....................................................4

3. Outline Dimension Diagram

........................................................................5

3.1 Indoor Unit ........................................................................................................................5

3.2 Outdoor Unit .....................................................................................................................5

4. Refrigerant System Diagram

......................................................................6

5. Electrical Part

...........................................................................................................7

5.1 Wiring Diagram .................................................................................................................7

5.2 PCB Printed Diagram .......................................................................................................9

6. Function and Control

...................................................................................... 11

6.1 Remote Controller Introduction .....................................................................................11

6.2 Brief Description of Modes and Functions ......................................................................15

Part

Ⅱ

: Installation and Maintenance

.................................................20

7. Notes for Installation and Maintenance

..........................................20

8. Installation

................................................................................................................22

8.1 Installation Dimension Diagram ......................................................................................22

8.2 Installation Parts-checking ............................................................................................24

8.3 Selection of Installation Location ....................................................................................24

8.4 Electric Connection Requirement ...................................................................................24

8.5 Installation of Indoor Unit ................................................................................................24

8.6 Installation of Outdoor Unit .............................................................................................27

8.7 Vacuum Pumping and Leak Detection ...........................................................................28

8.8 Check after Installation and Test Operation ...................................................................28

9. Maintenance

............................................................................................................29

9.1 Error Code ......................................................................................................................29

9.2 Procedure of Troubleshooting ........................................................................................31

9.3 Maintenance Method for Normal Malfunction .................................................................36

Table of Contents

Service Manual

10. Exploded View and Parts List

..............................................................38

10.1 Indoor Unit ....................................................................................................................38

10.2 Outdoor Unit .................................................................................................................40

11. Removal Procedure

.......................................................................................42

11.1 Removal Procedure of Indoor Unit ...............................................................................42

11.2 Removal Procedure of Outdoor Unit ............................................................................51

Appendix:

........................................................................................................................57

Appendix 1: Reference Sheet of Celsius and Fahrenheit ....................................................57

Appendix 2: Conguration of Connection Pipe .....................................................................57

Appendix 3: Pipe Expanding Method ...................................................................................58

Appendix 4: List of Resistance for Temperature Sensor ......................................................59

Table of Contents

1

Technical Information

Service Manual

1. Summary

Part

Ⅰ

: Technical Information

Indoor Unit:

Remote Controller:

Outdoor Unit:

GWC36LB-D3NNB2A/I

GWC36LB-D3NNB2A/O

YV1FB7

2

Technical Information

Service Manual

2. Specications

2.1 Specication Sheet

Model GWC36LB-D3NNB2A

Product Code CA433000800

Power Supply

Rated Voltage V~ 230

Rated Frequency Hz 60
Phases 1

Power Supply Mode Outdoor
Cooling Capacity W 9670
Heating Capacity W /

Cooling Power Input W 3300

Heating Power Input W /
Cooling Power Current A 14
Heating Power Current A /
Rated Input W 4200
Rated Current A 22

Air Flow Volume(SH/H/M/L/SL) m3/h 1450/1350/1150/1000/-

Dehumidifying Volume L/h 3.5

EER W/W 2.93

COP W/W /

SEER /

HSPF /

Application Area m

2

46-70

Indoor Unit

Model of indoor unit GWC36LB-D3NNB2A/I

Indoor Unit Product Code CA433N00800

Fan Type Cross-ow

Diameter Length(DXL) mm Φ108X522.7

Fan Motor Cooling Speed (SH/H/

M/L/SL)

r/min 1450/1350/1200/1050/-

Fan Motor Heating Speed (SH/H/

M/L/SL)

r/min /

Output of Fan Motor W 60

Fan Motor RLA A 0.46

Fan Motor Capacitor μF 3
Evaporator Form Aluminum Fin-copper Tube

Pipe Diameter mm Φ7

Row-n Gap mm 2-1.5

Coil Length (LXDXW) mm 1074X25.4X381

Swing Motor Model MP24HB

Output of Swing Motor W 1.5
Fuse A 5
Sound Pressure Level (SH/H/M/L/
SL)

dB (A) 56/54/50/47/-

Sound Power Level (SH/H/M/L/SL) dB (A) 66/64/60/57/-

Dimension (WXHXD) mm 1350X326X253

Dimension of Carton Box (LXWXH) mm 1438X418X352

Dimension of Package (LXWXH) mm 1441X421X367

Net Weight kg 20
Gross Weight kg 24.5

3

Technical Information

Service Manual

Outdoor Unit

Model of Outdoor Unit GWC36LB-D3NNB2A/O

Outdoor Unit Product Code CA433W00800

Compressor Manufacturer/Trademark

SHANGHAI HITACHI ELECTRICAL APPLIANCES

CO.;LTD.

Compressor Model ATH290RN-C9LU

Compressor Oil Mineral Oil

Compressor Type Rotary

L.R.A. A 64

Compressor RLA A 13.7

Compressor Power Input W 3020

Overload Protector UP14SE5215

Throttling Method Capillary

Operation temp ºC 16~30

Ambient temp (cooling) ºC 18~43

Ambient temp (heating) ºC /

Condenser Form Aluminum Fin-copper Tube

Pipe Diameter mm Φ7.94

Rows-n Gap mm 2.5-1.5

Coil Length (LXDXW) mm 953X57.15X748

Fan Motor Speed rpm 780

Output of Fan Motor W 90

Fan Motor RLA A 0.8

Fan Motor Capacitor μF 4

Air Flow Volume of Outdoor Unit m3/h 4000

Fan Type Axial-ow

Fan Diameter mm Φ552

Defrosting Method /

Climate Type T1

Isolation I

Moisture Protection IP24

Permissible Excessive Operating Pressure for the
Discharge Side

MPa 4.3

Permissible Excessive Operating Pressure for the

Suction Side

MPa 2.5

Sound Pressure Level (H/M/L) dB (A) 58/-/-

Sound Power Level (H/M/L) dB (A) 68/-/-

Dimension (WXHXD) mm 980X790X427

Dimension of Carton Box (LXWXH) mm 1080X485X840

Dimension of Package (LXWXH) mm 1083X488X855

Net Weight kg 68

Gross Weight kg 73

Refrigerant R410A

Refrigerant Charge kg 2.4

Connection

Pipe

Length m 5

Gas Additional Charge g/m 15

Outer Diameter Liquid Pipe mm Φ6

Outer Diameter Gas Pipe mm Φ19

Max Distance Height m 10

Max Distance Length m 30

Note:The connection pipe applies metric diameter.

The above data is subject to change without notice; please refer to the nameplate of the unit.

4

Technical Information

Service Manual

2.3 Cooling and Heating Data Sheet in Rated Frequency

Rated cooling

condition(°C)

(DB/WB)

Model

Pressure of gas pipe

connecting indoor and

outdoor unit

Inlet and outlet pipe

temperature of heat

exchanger

Fan speed of

indoor unit

Fan speed

of outdoor

unit

Indoor Outdoor P (MPa) T1 (°C) T2 (°C)

27/19 35/24 36K 0.48 ~ 0.7 7.2 to 9.6 78.1 to 38.5 Supper High High

Instruction:

T1: Inlet and outlet pipe temperature of evaporator
T2: Inlet and outlet pipe temperature of condenser

P: Pressure at the side of big valve
Connection pipe length: 5 m.

Cooling:

2.2 Capacity Variation Ratio According to Temperature

0

20

40

60

80

100

120

Capacity ratio(%)

Outdoor temp. (°C)

-7 -5 0510

7

Conditions
Indoor:DB20°C/WB15°C
Indoor air flow:Super High
Pipe length:5m

32 33 34 35 36 37 38 39

4340 41 42

100

105

95

90

85

80

75

70

65

60

55

50

Conditions
Indoor:DB27°C/WB19°C
Indoor air flow:Super High
Pipe length:5m

Outdoor temp.(°C)

Capacity ratio (%)

Cooling:

5

Technical Information

Service Manual

3. Outline Dimension Diagram

3.1 Indoor Unit

3.2 Outdoor Unit

Unit:mm

920

370

980427

610

395

790

1350

326

253

295

90

40

350 254746

Φ70

Φ70

Unit:mm

6

Technical Information

Service Manual

4. Refrigerant System Diagram

Refrigerant pipe diameter

Liquid :1/4" (6 mm)

Gas : 5/8" (16mm)

Indoor unit

Outdoor unit

Indoor unit

Outdoor unit

COOLING

HEATING

Accumlator

4-Way valve

Discharge

Suction

Discharge

Suction

Heat
exchanger
(evaporator)

Heat
exchanger
(evaporator)

Heat
exchanger
(condenser)

Heat
exchanger
(condenser)

Valve

Valve

Valve

Valve

Liquid pipe
side

Gas pipe
side

Liquid pipe
side

Gas pipe
side

Compressor

Accumlator

Compressor

Strainer

Strainer Strainer

Capillary

Capillary

Cooling only model

Cooling and heating model

7

Technical Information

Service Manual

Symbol Symbol Color Symbol Symbol Color Symbol Name

WH White GN Green Grounding wire

YE Yellow BN Brown COMP Compressor

RD Red BU Blue CAP Jumper Cap

YEGN Yellow/Green BK Black / /

VT Violet OG Orange / /

5. Electrical Part

5.1 Wiring Diagram

● Indoor Unit

● Instruction

Note: Jumper cap is used to determine fan speed and the swing angle of horizontal lover for this model.

3

2

8

Technical Information

Service Manual

● Outdoor Unit

These circuit diagrams are subject to change without notice, please refer to the one supplied with the unit.

COM-INNER

N1

AC-L

COMP

R(M)

S

C

PE

N

YEGN

BU

BN

BK

BUW4

W6BK

BNW3

W7RD

AC CONTACTOR

BUW11

W14

AP1 PRINTED CIRCUIT BOARD

L

TERMINAL
BLOCK

ITCII

TRANSFORMER

R3R1

T-PIPE TR-OUTTR-IN

SHIELDING

RESISTOR

COMP

COMP.

PE

YEGN

W13BK

N

L

N

PE

LPP

BK(BN)

BU

YEGN

BU

W12YE

J

W5
BU

W8BU

BN

W1BN

POWER

1/L1

A2

2/T1

(6)A1(0)

W9

RESISTOR

SHIELDING

BK

C1

BN

PE

PE

YEGN

(BU)

BK

CAP.

RDBN

C2

FAN MOTOR

M

W17

SWITCH

PRESSURE

HP

P

HPP

W15W16

YE WH

HIGH

W2

OUTTUBE

SHIELDING

RESISTOR

R2

L1

XT

W10

BU

CAP.

INDOOR UNIT

OUTROOM

3

2

N(1)

(1)

KM

(4)

9

Technical Information

Service Manual

5.2 PCB Printed Diagram

● Top view

● Bottom view

No. Name

1 Fan motor capacitor terminal
2 Live wire
3 Fuse
4 Neutral wire

5

Indoor & outdoor unit

communication cable terminal
6 Wiring terminal for turbo fan
7 Low fan level terminal
8 Medium fan level terminal
9 High fan level terminal

10

Wring terminal for neutral wire

of fan

11 Auto button
12 Up & down swing terminal
13 Ambient temp sensor
14 Tube temp sensor
15 No.2 double-8 display terminal
16 No.1 double-8 display terminal

1

2

3

456879 1110

12

13

14

15

16

Indoor Unit

10

Technical Information

Service Manual

● Top view

● Bottom view

Outdoor Unit

1 Input of transformer

2

Terminal for outdoor fan and
compressor

3 Output of transformer

4

Terminal for high pressure

protection

5

Terminal for low pressure
protection

6

Terminal for outdoor ambient
temp sensor

7

Terminal for outdoor pipe temp
sensor

8 Current mutual-inductor

9

Terminal for communication

wire
10 Protective tube
11 Terminal for neutral wire
12 Terminal for live wire

13

Wiring terminal of outdoor

discharge temperature sensor

1 2

3

4

5

613

7

9

8

10

11

12

11

Technical Information

Service Manual

6. Function and Control

6.1 Remote Controller Introduction

Buttons on Remote Controller

Introduction for icons on display screen

1

14

3

1

13

2

2

5

4

6

7

8

11

12

13

9

14

15

ON/OFF button

▲ button

3

FAN button

SWING button

TIMER OFF button

TURBO button

10

TEMP button

I FEEL button

button

CLOCK button

TIMER ON button

SLEEP button

Send signal
Turbo mode

8

heating function

Set temperature

Set time
TIMER ON /

TIMER OFF
Child lock

Up & down swing

Set fan speed

ventilation operation

Light

Temp. display type

:Set temp.

:Outdoor ambient temp.

:Indoor ambient temp.

Sleep mode

Clock

Heat mode

Fan mode

Dry mode

Cool mode

Auto mode

Operation mode

I feel

6

9

8

12

15

4

7

10

5

11

X-FAN button

/

MODE button

▲

button

X-fan mode

health function

Introduction for buttons on remote controller

Note:

● After putting through the power, the air conditioner will give out a sound. Operation indictor " " is ON (red indicator).
After that, you can operate the air conditioner by using remote controller.

●

Under on status, pressing the button on the remote controller, the signal icon " "

on the display of remote controller

will blink once and the air conditioner will give out a “de” sound, which means the signal has been sent to the air conditioner

.

● Under off status, set temperature and clock icon will be displayed on the display

of remote controller (If timer on, timer

off and light functions are set, the corre-

sponding icons will be displayed on the display of remote controller at the same

time); Under on status, the display will show the corresponding set function icons.

Press this button to turn on the unit. Press this button again to turn off the unit.

Press this button to increase set temperature. Holding it down above 2 seconds rapidly increases set temperature.

In AUTO mode, set temperature is not adjustable.

12

Technical Information

Service Manual

AUTO

COOL DRY FAN

HEAT

*

OFF

13

Technical Information

Service Manual

battery

Cover of battery box

remove

reinstall

14

Technical Information

Service Manual

15

Technical Information

Service Manual

6.2 Brief Description of Modes and Functions

1. Summary

(1) Buzzer

When the controller is energized or receives signal from button (emergency operation switch on air conditioner) or remote controller, the

buzzer will give out a beep.

(2) Display

After energization, all icons will be displayed once. Operation icon is in red under standby status. After turning on the unit by remote
controller, operation icon is bright and corresponding set operation mode icon will be displayed (Mode icon include: cooling, heating,

drying).

(3) Temperature parameter

◆

Indoor set temperature (Tpreset)

◆

Indoor ambient temperature (Tamb.)

◆

Inner tube temperature of indoor evaporator (Ttube)

2. Introduction of Basic Mode Function

◆

Once the compressor is energized, there should be a minimum interval of 3 mins between two start-ups.

◆

If the unit is with memory function and is off before power failure, the compressor can be restarted without an interval of 3 mins; if the

◆

unit is on before power failure, the compressor will be restarted with an interval of 3 mins.

Once compressor is started, it won’t stop within 6 mins according to the change of room temp.

(1) Auto mode

①

Operation condition and process for auto mode

Under auto mode, the system will automatically select operation mode (cooling, heating, and fan) according to indoor ambient
temperature. There swill be 30s delayed for protection between mode switchover.

◆

When Tamb. ≥26℃, the system operates under cooling mode; Ex-factory set temperature is 25℃.

◆

Cool unit: when Tamb. ≤22℃, the system operates under fan mode; Ex-factory set temperature is 25℃.

◆

Heat pump unit: when Tamb. ≤22℃, the system operates under heating mode; Ex-factory set temperature is 20℃.

◆22℃

<Tamb.<26℃: The system operates under fan mode if turn on the unit to enter into auto mode for the rst time; If switch to

auto mode from cooling, heating or fan mode, the system keeps previous operation mode; If switch to auto mode from drying mode, the

system operates under fan mode.
② Display: Operation icon, actual operation mode icon, set temperature (that’s the display content of dual-8 nixie tube)
③ Protection function is same as that under each mode.

(2) Cooling mode

①

Operation condition and process for cooling mode

◆

When Tamb. ≥Tset+1℃, the system operates under cooling mode. In this case, the compressor, the ODU fan motor and the IDU fan

motor operates at set speed.

◆

When Tamb. ≤Tset-1℃, the compressor and the ODU fan motor stop, while the IDU fan motor operates at set speed.

◆

When Tset-1℃<Tamb. <Tset+1℃, the system will maintain its previous operation status.

In cooling mode, the 4-way valve is de-energized (4-way valve is not available for cooling only unit). Temperature setting range is

16~30℃.

Indicates operation

Indicates stop

Tpreset +1 ˚C

Tpreset –1 ˚C

Compressor

Outdoor fan motor

Indoor fan motor

Graphic instruction:
(Same as below)

Tamb.

Stop cooling

Start cooling

Original operating status

6 min. 3 min. 6 min.

Set fan speed

Heating icon

Drying icon

Cooling icon

Dual-8 nixie
tube display

Operation icon

Receiver
window

For B2 panel

Display

16

Technical Information

Service Manual

②

Display: Operation icon, cooling icon, set temperature.

③

Protection function

◆

Freeze protection
During operation, when controller detected that Ttube≤0℃ for a consecutive period of time, the system enters into freeze protection. In
that case, the compressor and the ODU fan stop operation, while the IDU operates at set fan speed. If freeze protection is released and
the compressor has been out of operation for 3 mins, the unit will resume its previous operation status.

◆

Overcurrent protection ( this protection function is not available for those models whose cooling capacity ≤12000Btu/h)
During operation process, if controller detected that system current exceeds the limit value for 3s consecutively (overcurrent), only the
fan operates. About 3 mins later, if overcurrent is released, the system will resume original operation.
If overcurrent protection occurs for 6 times consecutively, and resume operation time won’t exceed 6min every time, overcurrent protec­tion information will be displayed. After turning off the unit, display won’t be displayed.
If turn on the unit again, the system will be restated up again. Overcurrent protection information will be eliminated.
Please refer to maintenance part for display information and disposal method for details.

◆

Locked protection to IDU fan motor
During operation of IDU fan motor, if controller detected that the rotation speed of IDU fan motor less than 300/min or stop rotation, the
motor operates abnormally. In order to prevent damage to motor, controller will protect automatically, the system stops operation and
blocked information of IDU fan motor will be displayed. After turning off the unit, display won’t be displayed.
If turn on the unit again, the system will be restated up again. Blocked information of IDU fan motor will be eliminated. (For some models,
they can only be restated up after re-energized)
Please refer to maintenance part for display information and disposal method for details.

(3) Drying mode

①

Operation condition and process for drying mode

◆

When Tamb. >Tset+2℃, the system starts drying and cooling. In this case, the compressor and the ODU fan motor operate, and the

IDU fan motor operates at low speed.

◆

When Tset-2℃≤Tamb. ≤Tset+2℃, the system will start drying. In this case, the IDU fan motor operates at low speed; the compressor
and the ODU fan motor operate for 6 minutes and stop for 4 minutes in cycle.

◆

When Tamb.<Tset-2℃, the compressor and the ODU fan motor stop, while the IDU fan motor runs at low speed.
In drying mode, the 4-way valve is de-energized (4-way valve is not available for cooling only unit); Temperature setting range is

16~30℃. Fan speed can’t be adjusted.

②

Display: Operation icon, drying icon, set temperature.

③

Protection function

◆

Freeze protection
During dying and cooling operation, when the controller detected that Ttube≤0℃ for a period of time consecutively, the system will enter
into freeze protection. In that case, the compressor and the ODU fan motor stops operation, while the IDU fan motor operates at low
speed. When freeze protection is release and the compressor has stopped for 3min, the system will resume original operation.
During drying operation, when the controller detected that Ttube≤0℃ for a period of time consecutively, the system enters into freeze
protection. In that case, the compressor, the ODU fan motor stops operation, while the IDU fan motor operates at low speed. When
freeze protection is release and the compressor has stopped for 4min, the system will resume original operation.

T

preset

T

amb.

+2

T

preset-

2

Cooling

Drying

Stop

6 min.

6min.

4min.

4min.

Compressor

Low speed

Outdoor fan motor

Indoor fan motor

Freeze protection period

Compressor

Outdoor fan motor

Indoor fan motor

3 min

Set fan speed

17

Technical Information

Service Manual

ķ

Operation condition and process for fan mode

In fan mode, the IDU fan motor operates at set speed, while the compressor and the ODU fan motor stop. 4-way valve is de-energi

zed

(4-way valve is not available for cooling only unit).

Temperature setting range is 16~30ć.

ĸ

Display: Operation icon, set temperature.

Ĺ

Protection function

In fan mode, there are overcurrent protection and blocked protection of IDU fan moto

r. Please refer to corresponding protection function

under cooling mode for details.

(5) Heating mode(no heating mode is not available for cooling only unit)

ķ

Operation conditioner and process for heating mode

In heating mode, 4-way valve is energized.

Temperature setting range is 16~30

ć

ĸ

Display: Operation icon, heating icon, set temperature.

Ĺ

Defrosting condition and process

For ensusing heating ef

fect, air conditioner will defrost automatically according to defrosting status on outdoor unit. During defrosting,

heating icon is bright for a while and then off for a while.

ĺ

Protection function

ƹ

Overheating prevention protection

ƹ

Noise silencing protection

When turning of

f the unit or during mode switchover, the 4-way valve is closed. In order to decrease noise, the 4-way valve will delay

2mins to be closed.

ƹ

Overcurrent protection ( this protection function is not available for those models whose cooling capacity ≤12000Btu/h)

During operation process, if controller detected that system current exceeds the limit value for 3s consecutively(overcurrent),

the

system stops operation.

About 3mins later, if overcurrent is released, the system will resume original operation. If overcurrent protection

occurs for 6 times consecutivel

y, and resume operation time won’t exceed 6min every time, overcurrent protection information will be

displayed.

After turning off the unit, display won’t be displayed.
If turn on the unit again, the system will be restated up again. Overcurrent protection information will be eliminated.
Please refer to maintenance part for display information and disposal method for details

.

ƹ

Locked protection to IDU fan motor

During operation of IDU fan moto

r, if controller detected that the rotation speed of IDU fan motor less than 300/min or stop rotation, the

motor operates abnormall

y. In order to prevent damage to motor, controller will protect automatically, the system stops operation and

blocked information of IDU fan motor will be displayed.

After turning off the unit, display won’t be displayed.

If turn on the unit again, the system will be restated up again. Blocked information of IDU fan motor will be eliminated. (For

some mod­els, they can only be restated up after re-energized)
Please refer to maintenance part for display information and disposal method for details.

T

preset

+4

T

preset

+2

Stop heating

Original operating status

Start heating

valve

Outdoor unit

Intdoor unit

Compressor

min.

min.

T

amb

.

Set fan speedSet fan speed

Reversing

ƹ

When Tamb.-Tsupplementary≤Tset-1,ć the unit starts heating operation. In this case, the 4-way valve is energized; the compressor

and ODU fan motor run simultaneously; the IDU fan motor runs after a

while to prevent blowing out cold air.

ƹ

When Tamb.-Tsupplementary≥Tset+1ć, the compressor and ODU fan motor stop; the 4-way valve remains energized; the IDU fan

motor blow

s residual heat for a while at set speed to prevent high temperature inside the unit.

ƹ

When Tset-1ć˘Tamb.-Tsupplementary˘Tset+1ć, the unit will maintain its previous running status.

During operation, if Ttube≥55ć is detected by the controller, the ODU fan motor stops operation; When Ttube returns to normal, the
ODU fan motor resumes operation.

(4) Fan mode

◆

Other protection is same as that under cooling mode.

6 min. 6 min.3 min.

60S 60S

18

Technical Information

Service Manual

3. Other Control Function Introduction

(1)Timer function

Controller has general timer function and clock timer function. When you select the remote controller with general timer function, only
the general timer function of controller can be activated; when you select the remote controller with clock timer, only the clock timer

function of controller can be activated.

①

General timer: The precision of general timer is 0.5hour. 24hours circulated timer can’t be set.

◆

Timer ON: Timer ON can be set at unit OFF. If selected ON time is reached, the unit will start to operate according to previous

setting status. Time setting range is 0.5~24hr in 30-minute increments.

◆

Timer OFF: Timer OFF can be set at unit ON. If selected OFF time is reached, the unit will stop. Time setting range is 0.5~24hr in

30-minute increments.

②

Clock timer: The precision of clock timer is 1 minute. 24hours circulated timer can be set.

◆

Timer ON: If timer ON is set during operation of the unit, the unit will continue to operate. If timer ON is set at unit OFF, upon ON

time reaches, the unit will start to run according to previous setting status.

◆

Timer OFF: If timer OFF is set at unit OFF, the system will keep standby status. If timer OFF is set at unit ON, upon OFF time

reaches, the unit will stop operation.

◆

Timer change:
Although timer has been set, the unit still can be turned on/off by pressing ON/OFF button on the remote controller. You can also reset
the timer.
If timer ON and timer OFF are set at the same time during operation of the unit, the unit will keep running at current status till OFF
time reaches. Upon ON time reached, the system will be turned on automatically. The unit will operate circularly like that every
24hours.
If timer ON and timer OFF are set at unit OFF status, the system keep OFF status till ON time reaches. Upon OFF time reaches, the
system will be turned OFF automatically. The unit will operate circularly like that every 24hours.

(2) Emergency operation switch

After pressing this button, the system will operate according under auto mode and the IDU fan motor operates at auto speed. Swing
motor operates when the IDU fan motor operates. Press this button again to turn off the unit.

(3) Sleep function

In this mode, the system will select proper sleep curve to operate according to different set temperature.

①

If start up sleep function under cooling or drying mode, the system will increase set temperature automatically within a certain

range to operate.

②

If start up sleep function under heating mode, the system will decrease set temperature automatically within a certain range to

operate.

(4) Turbo function

Turbo function can be set under cooling and heating modes. During operation of turbo function, the system operates at the maximum

fan speed.

(5) Dry function

Dry function can be set under cooling and drying modes. During operation of drying function, the fan will stop operation after operating
for a period of time when turning off the unit.

(6) Auto fan speed control

Auto fan speed control can be set under cooling, heating and fan mode. During operation of auto fan speed control, the IDU fan motor
will adjust the fan speed (high, medium or low speed) according to ambient temperature.

(7) Up&down swing control

①

After energization, up & down swing motor will rstly have the horizontal louver rotate anticlockwise to position O to close air outlet.
If swing function has not been set after start-up of the unit, horizontal louver will turn clockwise to position D in heating mode, or turn
clockwise to level position L in other modes.

②

If swing function is set when turning on the unit, the horizontal louver will swing between L and D.

Horizontal louver has 7 swing statuses:

◆

Stay at position L: control by remote controller:

◆

Stay at position A: control by remote controller:

◆

Stay at position B: control by remote controller:

◆

Stay at position C: control by remote controller:

◆

Stay at position D: control by remote controller:

◆

Swing between L and D: control by remote controller: , , ,

◆

Stop at any postion between L and D (angles between L and D are equiangular) and no display

on remote controller.

O(0°)

Emergency
operation switch

Press

Press

ON status(Auto mode)

OFF status

19

Technical Information

Service Manual

③

When turning off the unit, horizontal louver will close at position O.

④

Swing action is valid only when set swing command and the IDU fan motor is operating.

(8) Dual-8 nixie tube display

◆

When the air conditioner is turned on for the rst time, dual-8 nixie tube defaulted to display current set temperature.

◆

When controller receives signal of display set temperature, dual-8 nixie tube displays set temperature. When received remote control
signal is switched to indoor ambient temperature display status signal from other display status, dual-8 nixie tube will display indoor
ambient temperature for 3-5s, and then turn back to display set temperature. If remote control to set other status, the display keeps the

same.

◆

When air conditioner has a malfunction,dual-8 nixie tube will show relevant error code.

◆

Heating icon is bright for a period time and then OFF for some models.

◆

If turn off light button, all display will be turned off.

(9) Memory function

①

Power failure when turning on the unit

◆

Memory content: ON status, mode, up&down swing, light, set temperature, set fan speed, general timer, Fahrenheit/ Celsius

◆

General timer can be memorized. Time of timer is calculated again from energization.

◆

Clock timer can’t be memorized.

②

Power failure when turning off the unit

◆

Memory content: OFF status, mode, up&down swing, light, set temperature, set fan speed, general timer, Fahrenheit/ Celsius

◆

General timer can be memorized. Time of timer is calculated again from energization.

◆

Clock timer can’t be memorized.

4. Special Function

(1) Health function (for the model with health function)

During operation of the IDU fan motor, press health button on the remote controller to start health function (If there is not health button on
the remote controller, the unit defaults health function ON).

(2) I Feel function (for all models, but it needs the remote controller which can set this function)

When I FEEL command is received, the controller will operate according to the ambient temperature sent by the remote controller (For
defrosting and cold air prevention, the unit operates according to the ambient temperature sensed by the air conditioner). The remote
controller will regularly send ambient temperature data to the controller. When the data has not been received for a long time, the unit
will operate according to the temperature sensed by the air conditioner. If I FEEL function is not set, the ambient temperature will be that
sensed by the air conditioner.

F1 Indoor ambient temperature sensor is open/short-circuited

F2 Indoor evaporator temperature sensor is open/short-circuited

F3 Outdoor ambient temperature sensor is open/short-circuited

F4 Outdoor condenser temperature sensor is open/short-circuited

F5 Outdoor discharge temperature sensor is open/short-circuited

E1 High pressure protection

E4 High discharge temperature protection of compressor

E5 Overcurrent protection

E6 Communication malfunction

20

Installation and Maintenance

Service Manual

1. Select the installation location according to the require­ment of this manual.(See the requirements in installation
part)

2. Handle unit transportation with care; the unit should not
be carried by only one person if it is more than 20kg.

3. When installing the indoor unit and outdoor unit, a suf­cient xing bolt must be installed; make sure the installation
support is rm.

4. Ware safety belt if the height of working is above 2m.

5. Use equipped components or appointed components dur­ing installation.

6. Make sure no foreign objects are left in the unit after n­ishing installation.

Electrical Safety Precautions:

7. Notes for Installation and Maintenance

Safety Precautions:
Important!

Please read the safety precautions carefully before
installation and maintenance.
The following contents are very important for installation
and maintenance.

Please follow the instructions below.

●The installation or maintenance must accord with the

instructions.

●Comply with all national electrical codes and local

electrical codes.

●Pay attention to the warnings and cautions in this

manual.

●All installation and maintenance shall be performed by
distributor or qualied person.

●All electric work must be performed by a licensed

technician according to local regulations and the
instructions given in this manual.

●Be caution during installation and maintenance. Prohibit

incorrect operation to prevent electric shock, casualty and
other accidents.

1. Cut off the power supply of air conditioner before
checking and maintenance.

2. The air condition must apply specialized circuit and
prohibit share the same circuit with other appliances.

3. The air conditioner should be installed in suitable
location and ensure the power plug is touchable.

4. Make sure each wiring terminal is connected firmly
during installation and maintenance.

5. Have the unit adequately grounded. The grounding
wire can’t be used for other purposes.

6. Must apply protective accessories such as protective
boards, cable-cross loop and wire clip.

7. The live wire, neutral wire and grounding wire of
power supply must be corresponding to the live wire,
neutral wire and grounding wire of the air conditioner.

8. The power cord and power connection wires can’t be
pressed by hard objects.

9. If power cord or connection wire is broken, it must be

replaced by a qualied person.

1. Avoid contact between refrigerant and re as it generates

poisonous gas; Prohibit prolong the connection pipe by
welding.

2. Apply specied refrigerant only. Never have it mixed with

any other refrigerant. Never have air remain in the refrigerant
line as it may lead to rupture or other hazards.

3. Make sure no refrigerant gas is leaking out when
installation is completed.

4. If there is refrigerant leakage, please take sufficient
measure to minimize the density of refrigerant.

5. Never touch the refrigerant piping or compressor without
wearing glove to avoid scald or frostbite.

Warnings

Refrigerant Safety Precautions:

Improper installation may lead to re hazard, explosion,

electric shock or injury.

Installation Safety Precautions:

Part

Ⅱ

: Installation and Maintenance

10. If the power cord or connection wire is not long enough,
please get the specialized power cord or connection wire
from the manufacture or distributor. Prohibit prolong the wire
by yourself.

11. For the air conditioner without plug, an air switch must
be installed in the circuit. The air switch should be all-pole
parting and the contact parting distance should be more than
3mm.

12. Make sure all wires and pipes are connected properly and
the valves are opened before energizing.

13. Check if there is electric leakage on the unit body. If yes,
please eliminate the electric leakage.

14. Replace the fuse with a new one of the same specication

if it is burnt down; don’t replace it with a cooper wire or
conducting wire.

15. If the unit is to be installed in a humid place, the circuit
breaker must be installed.

21

Installation and Maintenance

Service Manual

Main Tools for Installation and Maintenance

1. Level meter, measuring tape

4. Electroprobe

7. Electronic leakage detector

10. Pipe pliers, pipe cutter

2. Screw driver

5. Universal meter

8. Vacuum pump

11. Pipe expander, pipe bender

3. Impact drill, drill head, electric drill

6. Torque wrench, open-end wrench, inner
hexagon spanner

9. Pressure meter

12. Soldering appliance, refrigerant container



22

Installation and Maintenance

Service Manual

8. Installation

8.1 Installation Dimension Diagram

Space to the ceiling

Space to the wall

At least 15cm

At least 15cm

At least 15cm

At least 250cm

Space to the wall

Space to the obstruction

roolf eht ot ecapS

Space to the obstruction

Drainage pipe

Space to the wall

Space to the obstruction

Space to the obstructio

Space to the obstruction

At least 300cm

At least 50cm

At least 200cm

At least 30cm

At least 30cm

At least 50cm

23

Installation and Maintenance

Service Manual

Preparation before installation

Prepare tools

Read the requirements
for electric connection

select installation
location

Select indoor unit
installation location

Install wall-mounting
frame, drill wall holes

Connect pipes of indoor
unit and drainage pipe

Connect wires of indoor unit

Connect wires of outdoor unit

Bind up pipes and
hang the indoor unit

Make the bound pipes pass
through the wall hole and then
connect outdoor unit

Neaten the pipes

Vacuum pumping and leakage detection

Check after installation and test operation

Finish installation

Note: this flow is only for reference; please find the more detailed installation steps in this section

.

Select outdoor unit
installation location

Install the support of outdoor unit
(select it according to the actual situation)

Install drainage joint of outdoor unit
(only for cooling and heating unit)

Connect pipes of outdoor unit

Start installation

Fix outdoor unit

Installation procedures

24

Installation and Maintenance

Service Manual

No. Name No. Name

1 Indoor unit 8 Sealing gum
2 Outdoor unit 9 Wrapping tape

3 Connection pipe 10

Support of outdoor
unit

4 Drainage pipe 11 Fixing screw

5

Wall-mounting
frame

12

Drainage plug(cooling

and heating unit)

6

Connecting
cable(power cord)

13

Owner’s manual,

remote controller

7 Wall pipe

1. Safety Precaution

(1) Must follow the electric safety regulations when installing
the unit.
(2) According to the local safety regulations, use qualified
power supply circuit and air switch.
(3) Make sure the power supply matches with the requirement

of air conditioner. Unstable power supply or incorrect wiring

may result in electric shock,re hazard or malfunction. Please
install proper power supply cables before using the air

conditioner.

(4) Properly connect the live wire, neutral wire and grounding
wire of power socket.
(5) Be sure to cut off the power supply before proceeding any
work related to electricity and safety.
(6) Do not put through the power before nishing installation.
(7) For appliances with type Y attachment,the instructions
shall contain the substance of thefollowing.If the supply cord is
damaged,it must be replaced by the manufacturer,its service
agent or similarly qualied persons in order to avoid a hazard.
(8) The temperature of refrigerant circuit will be high, please
keep the interconnection cable away from the copper tube.

8.2 Installation Parts-checking

8.3 Selection of Installation Location

8.4 Electric Connection Requirement

8.5 Installation of Indoor Unit

Air-conditioner Air switch capacity

36K 32A

1.Please contact the local agent for installation.

2.Don't use unqualied power cord.

1. Basic Requirement:

Installing the unit in the following places may cause
malfunction. If it is unavoidable, please consult the local dealer:
(1) The place with strong heat sources, vapors, ammable or
explosive gas, or volatile objects spread in the air.
(2) The place with high-frequency devices (such as welding
machine, medical equipment).
(3) The place near coast area.
(4) The place with oil or fumes in the air.
(5) The place with sulfureted gas.
(6) Other places with special circumstances.

2. Grounding Requirement:

(1) The air conditioner is rst class electric appliance. It must
be properly grounding with specialized grounding device
by a professional. Please make sure it is always grounded
effectively, otherwise it may cause electric shock.
(2) The yellow-green wire in air conditioner is grounding wire,
which can't be used for other purposes.
(3) The grounding resistance should comply with national

electric safety regulations.

(4) The appliance must be positioned so that the plug is

accessible.

(5) An all-pole disconnection switch having a contact separation
of at least 3mm in all poles should be connected in xed wiring.
(6) Including an air switch with suitable capacity, please note
the following table. Air switch should be included magnet
buckle and heating buckle function, it can protect the circuit­short and overload. (Caution: please do not use the fuse only
for protect the circuit)

1. Choosing Installation Iocation

Recommend the installation location to the client and then
conrm it with the client.

2. Install Wall-mounting Frame

(1) Hang the wall-mounting frame on the wall; adjust it in
horizontal position with the level meter and then point out the
screw xing holes on the wall.
(2) Drill the screw xing holes on the wall with impact drill (the
specification of drill head should be the same as the plastic
expansion particle) and then ll the plastic expansion particles

2. Indoor Unit:

(1) There should be no obstruction near air inlet and air outlet.
(2) Select a location where the condensation water can be
dispersed easily and won't affect other people.
(3) Select a location which is convenient to connect the
outdoor unit and near the power socket.
(4) Select a location which is out of reach for children.
(5) The location should be able to withstand the weight of

indoor unit and won't increase noise and vibration.

(6) The appliance must be installed 2.5m above oor.
(7) Don't install the indoor unit right above the electric

appliance.

(8) The appliance shall not be installed in the laundry.

3. Outdoor Unit:

(1) Select a location where the noise and outow air emitted by
the outdoor unit will not affect neighborhood.
(2) The location should be well ventilated and dry, in which the
outdoor unit won't be exposed directly to sunlight or strong

wind.

(3) The location should be able to withstand the weight of

outdoor unit.

(4) Make sure that the installation follows the requirement of

installation dimension diagram.

(5) Select a location which is out of reach for children and far
away from animals or plants.If it is unavoidable, please add

fence for safety purpose.

Note:

25

Installation and Maintenance

Service Manual

Wall

Wall

Mark on the middle of it

Gradienter

Left

Right

(Rear piping hole)

(Rear piping hole)

Space
to the
wall

above

Space
to the
wall

above

Ф

70mm

Ф

70mm

Outlet

pipe

Drain hose

Drain hose

Tape

Outlet pipe

Insulating pip

e

Torque wrenc

h

Open-end

wrench

Indoor pipe

Pipe

Union nut

Union nutPipe joint

Pipe

Hex nut diameter(mm) Tightening torque(N.m)

Φ6 15~20

Φ9.52 30~40

Φ12 45~55
Φ16 60~65
Φ19 70~75

Refer to the following table for wrench moment of force

:

Left

Rear lef

t

Right

Rear right

Drain hose

Insulating pip

e

5-10

°

Φ70m

m

Indoor

Outdoor

(1) Pay attention to dust prevention and take relevant safety
measures when opening the hole.
(2) The plastic expansion particles are not provided and should
be bought locally.

(1) Add insulating pipe in the indoor drain hose in order to

prevent condensation.

(2) The plastic expansion particles are not provided.
(As show in Fig.10)

Fig.1

Fig.2

Fig.5 Fig.6

Fig.7

Fig.8

Fig.9

Fig.10

Fig.3

Fig.4

in the holes.
(3) Fix the wall-mounting frame on the wall with tapping screws
(ST4.2X25TA) and then check if the frame is rmly installed by
pulling the frame. If the plastic expansion particle is loose,
please drill another xing hole nearby.

3. Install Wall-mounting Frame

(1) Choose the position of piping hole according to the direction
of outlet pipe. The position of piping hole should be a little
lower than the wall-mounted frame.(As show in Fig.1)

5. Connect the Pipe of Indoor Unit

(1) Aim the pipe joint at the corresponding bellmouth.(As show
in Fig.5)
(2) Pretightening the union nut with hand.
(3) Adjust the torque force by referring to the following sheet.
Place the open-end wrench on the pipe joint and place the
torque wrench on the union nut. Tighten the union nut with
torque wrench.(As show in Fig.6)
(4) Wrap the indoor pipe and joint of connection pipe with
insulating pipe, and then wrap it with tape.(As show in Fig.7)

6. Install Drain Hose

(1) Connect the drain hose to the outlet pipe of indoor unit.(As
show in Fig.8)
(2) Bind the joint with tape.(As show in Fig.9)

4. Outlet Pipe

(1) The pipe can be led out in the direction of right, rear right,
left or rear left.(As show in Fig.3)
(2) When selecting leading out the pipe from left or right, please
cut off the corresponding hole on the bottom case.(As show in
Fig.4)

(2) Open a piping hole with the diameter of Φ70 on the selected
outlet pipe position.In order to drain smoothly, slant the piping
hole on the wall slightly downward to the outdoor side with the
gradient of 5-10°.(As show in Fig.2)

Note:

Note:

Cut off
the hole

Left Right

26

Installation and Maintenance

Service Manual

Wiring cove

r

Screw

Panel

(4) Put wiring cover back and then tighten the screw.
(5) Close the panel.

Indoor unit

Gas
pipe

Indoor and

outdoor power cord

Liquid
pipe

Drain hose

Band

Drain hose

Band

Connection pipe

Indoor power cord

(1) All wires of indoor unit and outdoor unit should be

connected by a professional.

(2) If the length of power connection wire is insufcient, please
contact the supplier for a new one. Avoid extending the wire by

yourself.

(3) For the air conditioner with plug, the plug should be
reachable after nishing installation.
(4) For the air conditioner without plug, an air switch must be
installed in the line. The air switch should be all-pole parting
and the contact parting distance should be more than 3mm.

(1) The power cord and control wire can't be crossed or

winding.

(2) The drain hose should be bound at the bottom.

Do not bend the drain hose too excessively in order to prevent
blocking.

7. Connect Wire of Indoor Unit

(1) Open the panel, remove the screw on the wiring cover and
then take down the cover.(As show in Fig.11)

8. Bind up Pipe

(1) Bind up the connection pipe, power cordand drain hose with
the band.(As show in Fig.14)
(2) Reserve a certain length of drain hose and power cord
for installation when binding them. When binding to a certain
degree, separate the indoor power and then separate the drain
hose.(As show in Fig.15)
(3) Bind them evenly.
(4) The liquid pipe and gas pipe should be bound separately at
the end.

9. Hang the Indoor Unit

(1) Put the bound pipes in the wall pipe and then make them
pass through the wall hole.
(2) Hang the indoor unit on the wall-mounting frame.
(3) Stuff the gap between pipes and wall hole with sealing gum.
(4) Fix the wall pipe.(As show in Fig.16)
(5) Check if the indoor unit is installed rmly and closed to the
wall.(As show in Fig.17)

(2) Make the power connection wire go through the cable-cross
hole at the back of indoor unit and then pull it out from the front
side.(As show in Fig.12)

(3) Remove the wire clip; connect the power connection wire
to the wiring terminal according to the color; tighten the screw
and then x the power connection wire with wire clip.(As show
in Fig.13)

Note:

Note:

Note:

Indoor

Outdoor

Wall pipe

Sealing gum

Upper hook

Lower hook of
wall-mounting fram

e

Fig.11

Fig.12

Fig.13

Fig.14

Fig.15

Fig.16

Fig.17

Power connection

wire

Cable-cross

hole

Note: The wiring connect is for reference only,

please refer to the actual one

.

Wire clip

Wiring board

Grounding

wire

Connect to outdoor unit

brown

yellow-

green

N(1)

black

blue

2 3

27

Installation and Maintenance

Service Manual

(1) Take sufficient protective measures when installing the

outdoor unit.

(2) Make sure the support can withstand at least four times the
unit weight.
(3) The outdoor unit should be installed at least 3cm above the
oor in order to install drain joint.(As show in Fig.18)
(4) For the unit with cooling capacity of 2300W~5000W, 6
expansion screws are needed; for the unit with cooling capacity
of 6000W~8000W, 8 expansion screws are needed; for the
unit with cooling capacity of 10000W~16000W, 10 expansion

screws are needed.

(1) After tightening the screw, pull the power cord slightly to
check if it is rm.
(2) Never cut the power connection wire to prolong or shorten
the distance.

(1) The through-wall height of drain hose shouldn't be higher
than the outlet pipe hole of indoor unit.(As show in Fig.25)
(2) Slant the drain hose slightly downwards. The drain hose
can't be curved, raised and uctuant, etc.(As show in Fig.26)

Note:

Note:

Note:

The drain hos

can't raise
upwards

gas pipe

Liquid pipe

Liquid
valve

gas valve

Union nut

Pipe joint

Foot holes

Foot holes

8.6 Installation of Outdoor Unit

1. Fix the Dupport of Outdoor Unit(select it according to
the actual installation situation)

(1) Select installation location according to the house structure.
(2) Fix the support of outdoor unit on the selected location with

expansion screws.

5. Connect Outdoor Electric Wire

(1) Remove the wire clip; connect the power connection wire
and power cord to the wiring terminal according to the color; x
them with screws.(As show in Fig.23)

6. Neaten the Pipes

(1) The pipes should be placed along the wall, bent reasonably
and hidden possibly. Min. semidiameter of bending the pipe is

10cm.

(2) If the outdoor unit is higher than the wall hole, you must set
a U-shaped curve in the pipe before pipe goes into the room,
in order to prevent rain from getting into the room.(As show in
Fig.24)

(2) Fix the power connection wire and power cord with wire clip.

2. Install Drain Joint(Only for cooling and heating unit)

(1) Connect the outdoor drain joint into the hole on the chassis.
(2) Connect the drain hose into the drain vent.
(As show in Fig.19)

3. Fix Outdoor Unit

(1) Place the outdoor unit on the support.
(2) Fix the foot holes of outdoor unit with bolts.
(As show in Fig.20)

4. Connect Indoor and Outdoor Pipes

(1) Remove the screw on the right handle of outdoor unit and
then remove the handle.(As show in Fig.21)
(2) Remove the screw cap of valve and aim the pipe joint at the
bellmouth of pipe.(As show in Fig.22)

(3) Pretightening the union nut with hand.
(4) Tighten the union nut with torque wrench .

Hex nut diameter(mm) Tightening torque(N.m)

Φ6 15~20

Φ9.52 30~40

Φ12 45~55
Φ16 60~65
Φ19 70~75

Refer to the following table for wrench moment of force

:

Fig.18 Fig.19

Fig.20

Fig.22

Fig.21

Fig.23

Fig.24

Fig.25

Chassis

Outdoor drain join

t

Drain hose

Drain vent

U-shaped curve

Wall

Drain hose

A

t least 3cm above the floo

r

handle

Note: the wiring connect is for reference only,
please refer to the actual one

.

Power connection wire

Power cord

LN

LN

Blue BlueYEGN YEGNBlack

Black
(Brown)

Brown

BU BK BUBNBNYEGN

YEGN

3N2

N(1)

L

L

N

Power

Handle

28

Installation and Maintenance

Service Manual

(3) The water outlet can't be placed in water in order to drain
smoothly.(As show in Fig.27

Liquid valve

Gas valve

Refrigerant charging
vent

Nut of refrigerant

Charging vent

Vacuum pump

Piezometer

Valve cap

Lo Hi

Inner hexagon
spanner

Open

Close

The drain hose can't be fluctuant

The drain hose
can't be fluctuant

The water

outlet can't be

fluctuant

NO. Items to be checked Possible malfunction

1

Has the unit been
installed rmly?

The unit may drop, shake or

emit noise.

2

Have you done the
refrigerant leakage test?

It may cause insufcient cooling
(heating) capacity.

3

Is heat insulation of
pipeline sufcient?

It may cause condensation and
water dripping.

4 Is water drained well?

It may cause condensation and
water dripping.

5

Is the voltage of power
supply according to the
voltage marked on the
nameplate?

It may cause malfunction or

damage the parts.

6

Is electric wiring and
pipeline installed

correctly?

It may cause malfunction or

damage the parts.

7

Is the unit grounded
securely?

It may cause electric leakage.

8

Does the power cord
follow the specication?

It may cause malfunction or

damage the parts.

9

Is there any obstruction
in air inlet and air outlet?

It may cause insufcient cooling
(heating).

10

The dust and

sundries caused
during installation are

removed?

It may cause malfunction or

damaging the parts.

11

The gas valve and liquid

valve of connection pipe

are open completely?

It may cause insufcient cooling
(heating) capacity.

The water outlet
can't be placed
in water

1. Use Vacuum Pump

(1) Remove the valve caps on the liquid valve and gas valve
and the nut of refrigerant charging vent.
(2) Connect the charging hose of piezometer to the refrigerant
charging vent of gas valve and then connect the other charging
hose to the vacuum pump.
(3) Open the piezometer completely and operate for 10-15min
to check if the pressure of piezometer remains in -0.1MPa.
(4) Close the vacuum pump and maintain this status for 1-2min
to check if the pressure of piezometer remains in -0.1MPa. If
the pressure decreases, there may be leakage.
(5) Remove the piezometer, open the valve core of liquid valve
and gas valve completely with inner hexagon spanner.
(6) Tighten the screw caps of valves and refrigerant charging
vent.(As show in Fig.28)

1. Check after Installation

Check according to the following requirement after finishing

installation.

2. Test Operation

(1) Preparation of test operation

● The client approves the air conditioner installation.

● Specify the important notes for air conditioner to the client.
(2) Method of test operation

● Put through the power, press ON/OFF button on the remote

controller to start operation.

● Press MODE button to select AUTO, COOL, DRY, FAN and
HEAT to check whether the operation is normal or not.

● If the ambient temperature is lower than 16℃, the air
conditioner can’t start cooling.

2. Leakage Detection

(1) With leakage detector:
Check if there is leakage with leakage detector.
(2) With soap water:
If leakage detector is not available, please use soap water for
leakage detection. Apply soap water at the suspected position
and keep the soap water for more than 3min. If there are air
bubbles coming out of this position, there's a leakage.

8.7 Vacuum Pumping and Leak
Detection

8.8 Check after Installation and Test
Operation

Fig.26

Fig.27

Fig.28

29

Installation and Maintenance

Service Manual

9. Maintenance

9.1 Error Code

No.

Malfunction

Name

Display Method of Indoor Unit

A/C Status

Possible Causes

(For specic maintenance method, please refer to the following

procedure of troubleshooting)

Error Code

Indicator lamp

(During blinking, ON for 0.5S

and OFF for 0.5 S)

Operation Lamp

COOL

Lamp

HEAT

Lamp

1

Indoor ambient

temperature

sensor is open/

short- circuited

F1

OFF

3S and

blinks

once

The unit will stop operation

as it reaches the temperature

point. During cooling and drying

operation, except indoor fan

operates, other loads （such as

compressor, outdoor fan, 4-way

valve） stop operation; During

heating operation, the complete

unit stops operation.

1. The wiring terminal between indoor ambient temperature sensor and

controller is loosened or poorly contacted;

2. There’s short circuit due to trip-over of the parts on controller;

3.Indoor ambient temperature sensor is damaged (Please check it by

referring to the resistance table for temperature sensor)

4. Main board is broken.

2

Indoor evaporator

temperature

sensor is open/

short-circuited

F2

OFF

3S and

blinks

twice

The unit will stop operation

as it reaches the temperature

point. During cooling and drying

operation, except indoor fan

operates, other loads stop

operation; During heating

operation, the complete unit

stops operation.

1. The wiring terminal between indoor evaporator temperature sensor

and controller is loosened or poorly contacted;

2. There’s short circuit due to the trip-over of the parts on controller;

3.Indoor evaporator temperature sensor is damaged (Please check it

by referring to the resistance table for temperature sensor)

4. Main board is broken.

3

Outdoor ambient

temperature

sensor is open/

short-circuited

F3

OFF

3S and

blinks

3

times

The unit will stop operation

as it reaches the temperature

point. During cooling and drying

operation, compressor stops

and indoor fan operates; During

heating operation, the complete

unit stops operation.

1. The wiring terminal between outdoor ambient temperature sensor

and controller is loosened or poorly contacted;

2. There’s short circuit due to the trip-over of the parts on controller;

3.Outdoor ambient temperature sensor is damaged (Please check it by

referring to the resistance table for temperature sensor)

4. Main board is broken.

4

Outdoor

condenser

temperature

sensor is open/

short-circuited

F4

OFF

3S and

blinks

4

times

The unit will stop operation

as it reaches the temperature

point. During cooling and drying

operation, compressor stops

and indoor fan operates; During

heating operation, the complete

unit stops operation.

1. The wiring terminal between outdoor condenser temperature sensor

and controller is loosened or poorly contacted;

2. There’s short circuit due to the trip-over of the parts on controller;

3.Outdoor condenser temperature sensor is damaged (Please check it

by referring to the resistance table for temperature sensor)

4. Main board is broken.

5

Outdoor

discharge

temperature

sensor is open/

short-circuited

F5

OFF

3S and

blinks

5

times

The unit will stop

operation as it reaches the

temperature point. During

cooling and drying operation,

compressor stops and indoor

fan operates; During heating

operation, the complete unit

stops operation.

1. The wiring terminal between outdoor discharge temperature sensor

and controller is loosenedor poorly contacted;

2. There’s short circuit due to the trip-over of the parts on controller;

3. Outdoor discharge temperature sensor is damaged. (Please check it

by referring to the resistance table for temperature sensor)

4. Main board is broken.

30

Installation and Maintenance

Service Manual

6

High pressure

protection

E1

OFF 3S and

blinks once

During cooling and drying

operation, except indoor

fan operates, all loads stop

operation. During heating

operation, if it is inverter unit,

the complete unit stops; if it is

oor standing unit, the complete

unit stops and operation of

remote controller or controller is

unavailable.

1. The main board and the display panel are not connected well.

2. The OVC terminal on main board is not connected well with the high

pressure switch on the complete unit.

3. The wiring of high pressure switch is loosened.

4. Refrigerant is superabundant;

5. Poor heat exchange (including blocked heat exchanger and bad

radiating environment );

6. Ambient temperature is too high; (if it is 3-phase unit, the high

pressure protection may be caused by overcurrent protection due to

this reason)

7. The supply voltage is abnormal (if it is 3-phase unit, the high pressure

protection may be caused by overcurrent protection due to this reason)

8. The air intake and air discharge at indoor / outdoor heat exchanger

are not smooth. The air cycle is short circuited.

9. Filter and heat exchange ns of indoor/outdoor units are blocked.

10. The system pipeline is blocked.

11. The gas valve and liquid valve for outdoor unit are not completely

opened.

12. The OVC input is at high level.

7

High discharge

temperature

protection of

compressor

E4

OFF 3S and

blinks 4 times

(inverter

unit); running

indicator

blinks (non-

inverteroor

standing unit);

As for other

types of units,

please refer

to the detailed

function

requirement.

During cooling and drying

operation, compressor and

outdoor fan stop while indoor

fan operates. During heating

operation,all loads stop.

1. Abnormal system (e.g.: blockage, etc)

2. Abnormal rotation speed of outdoor motor (cooling )

3. Abnormal air intake (cooling)

4. System is normal, but the compressor discharge temperature sensor

is abnormal or poorly contacted.

8

Overcurrent

protection E5

OFF 3S and

blinks 5 times

During cooling and drying

operation, compressor and

outdoor fan stop while indoor

fan operates. During heating

operation, all loads stop.

1. Unstable supply voltage. Normal uctuation shall be within 10% of

the rated voltage on the nameplate.

2. Supply voltage is too low and load is too high.

3. Measure the current of live wire on main board. If the current

isn’t higher than the overcurrent protection value, please check the

controller.

4. The indoor and outdoor heat exchangers are too dirty, or the air inlet

and air outlet are blocked.

5. The fan motor is not running. Abnormal fan speed: fan speed is too

low or the fan doesn’t run

6. The compressor is not running normally. There is abnormal sound, oil

leakage or the temperature of the shell is too high, etc.

7. There’s blockage in the system （lth blockage, ice plug, greasy

blockage, Y-valve hasn’t been opened completely

）

9

Communication

malfunction E6

OFF 3S and

blinks 6 times

During cooling operation,

compressor stops while indoor

fan motor operates. During

heating operation, the complete

unit stops.

1. The communication line is not connected tightly or poorly contacted.

Poor contact of any line may cause communication malfunction.

2. The match between main board and display panel is incorrect.

Indoor and outdoor unit boards are matched incorrectly.

3. Incorrect wire connection.

4. Controller is damaged.

31

Installation and Maintenance

Service Manual

9.2 Procedure of Troubleshooting

9.2.1 F1~F5 Malfunction

Start

Insert the temperature

sensor tightly

yes

M alfunction is

eliminated.

Make the parts upright

yes

Malfunction is

eliminated.

Replace the controller with

one of the same model

End

no

no

no

no

yes

ye

s

Malfunction is

removed.

no

yes

yes

no

Is the wiring
terminal between temperature
sensor and the controller loosened or
poo rly contacted?

Is there short circuit due to trip over
of the pa rts?

Is the tem perature
sensor normal according to the
Resistance Table?

Replace it with a
temperature sensor
of the same model

32

Installation and Maintenance

Service Manual

9.2.2 E1 Malfunction

Start

Are the display panel and main board

connected tightly?

Are theOVC terminal

well with the high pressureswitch on the

complete unit?

Is the wiring of high pressure

or poorly contacted?

Connect the display panel with the main board well

Is therefrigerant superabundant?

Is there poor heat

exchanger and bad radiating

environment );

Is the supply voltage normal?

be caused by overcurrent protection

due to this)

Are the air

intake and air discharge at indoor / outdoorheat

exchanger smooth?

Is there filthblockage on the filter or on the

heatexchanger fins of indoor / outdoorunit?

Is there blockage inside the pipeline of the system

Are the gas valve and liquid valve for

outdoor unit opened completely?

yes

yes

no

no

no

no

yes

yes

no

no

Replace thecontroller

yes

End

no

Malfunction is eliminated.

no

Connect the OVC terminalon themain boardwith
thehigh pressure switch on the complete unit well

no

Malfunction is eliminated.

no

If the wire of high pressure switch is loosened, please
connectthe wires according to the circuitdiagram.

If the high pressure switch is broken or poorly contacted,
please replaceit.

yes

Malfunction is eliminated.

no

Adjust the volume of refrigerant according to the
requirement of the system

yes

Malfunction is eliminated.

no

Adjust the unit to improve the heat exchange of unit

yes

Malfunction is eliminated.

no

Decrease the ambient temperature

yes

Malfunction is eliminated.

no

Thenormal voltage is lower than 90% of the rated

no

Malfunction is eliminated.

Adjust the system to make the air intake and air
discharge of indoor and outdoor heat exchangers
smooth

no

Malfunction is eliminated.

no

Remove the blockage. Malfunction is eliminated.

Remove the blockage inside the pipeline of the system

yes

Malfunction is removed.

Open the outdoor gas valve and liquid valvecompletely

no

Malfunction is eliminated.

no

yes

yes

yes

yes

yes

yes

yes

yes

yes

yes

yes

no

no

no

no

Is the ambient temperature

on the main board connected

voltage on the nameplate

(Ifit is a 3-phase unit, high pressure protection may

too high?(If it is a 3-phase unit, high pressure

protection may be caused by overcurrent

protection due to this)

exchange? (Including filth blockage of heat

switch loosened? Is the high pressure switch broken

33

Installation and Maintenance

Service Manual

9.2.3 E4 Malfunction

Start

System is abnormal(such as blockage)

Out door unit’s mo tor is abnormal
(under cooling mode)

Outdoor air comes in abnormally

(under cooling mode)

System is abno rmal,

but resist ance value of discharge

sensor for compressor

temperatureis abno rmal

Replace con trol
panel

End

Check the sy stem;
Eliminate the block­ageinside the system

Check wiring and
fan capacitor;
replace motor

Check the unit to
let air come in and
come ou t smoothly

Replace temperature

sensor

Problem is solved

Problem is solved

Problem is solved

Problem is solved

no

no

no

no

no

no

no

no

yes

yes

yes

yes

yes

yes

yes

34

Installation and Maintenance

Service Manual

9.2.4 E5 Malfunction

no

no

no

no

yes

no

no

End

yes

Malfunction is
eliminated

Is the supply voltage unstable
with big fluctuation?

Is the supply voltage too low
with overload?

The fan is abnormal? Fan
speed is too low or fan doesn’t rotate

Measure the
current of live wireon the main
board with a clamp ampere meter. Is the
current higher than the value of the
overcurrent protection?

Is there blockage inside
the system? (Filth blockage, ice plug,
greasy blockage, the Y-valve hasn’t been opened
completely)

Is the compressor running
abnormally? Is there abnormal sound or oil
leakage; is the temperature of the shell
too high, etc.?

Is the indoor / outdoor
heat exchanger too dirty,or are the air inlet
and outlet blocked?

Normal fluctuation is within 10 % of the rated
voltage on the nameplate

Malfunction is
eliminated

no

yes

no

yes

no

yes

no

no

no

yes

no

yes

no

yes

yes

yes

yes

yes

yes

yes

Malfunction is
eliminated

Malfunction is
eliminated

Malfunction is
eliminated

Malfunction is
eliminated

Malfunction is
eliminated

Malfunction is
eliminated

Troubleshooting
for E5 malfunction

Adjust the supply voltage to maintain it within
normal range

Clean the indoor and outdoor heat exchangers
and remove the blockage of air inlet and outlet

Check the motor and reinstall the motor to have
the fan run normally

Replace the mainboard with the same model

Replace the mainboard with the same model

Flush the heat exchangers with high pressure
nitrogen

Replace the mainboard with
the same model

35

Installation and Maintenance

Service Manual

9.2.5 E6 Malfunction

Poor contact any line may
lead to communication
malfunction

36

Installation and Maintenance

Service Manual

Possible Causes Discriminating Method (Air conditioner Status) Troubleshooting

Set temperature is improper Observe the set temperature on remote controller Adjust the set temperature

Rotation speed of the IDU fan

motor is set too low

Small wind blow Set the fan speed at high or medium

Filter of indoor unit is blocked Check the lter to see it's blocked Clean the lter

Installation position for indoor unit
and outdoor unit is improper

Check whether the installation postion is proper
according to installation requirement for air

conditioner

Adjust the installation position, and install the

rainproof and sunproof for outdoor unit

Refrigerant is leaking

Discharged air temperature during cooling is
higher than normal discharged wind temperature;
Discharged air temperature during heating is
lower than normal discharged wind temperature;
Unit's pressure is much lower than regulated

range

Find out the leakage causes and deal with it.

Add refrigerant.

Malfunction of 4-way valve Blow cold wind during heating Replace the 4-way valve

Malfunction of capillary

Discharged air temperature during cooling is
higher than normal discharged wind temperature;
Discharged air temperature during heating is
lower than normal discharged wind temperature;
Unit't pressure is much lower than regulated
range. If refrigerant isn’t leaking, part of capillary
is blocked

Replace the capillary

Flow volume of valve is
insufcient

The pressure of valves is much lower than that
stated in the specication

Open the valve completely

Malfunction of horizontal louver Horizontal louver can’t swing

Refer to point 3 of maintenance method for

details

Malfunction of the IDU fan motor The IDU fan motor can’t operate

Refer to troubleshooting for H6 for maintenance
method in details

Malfunction of the ODU fan motor The ODU fan motor can't operate

Refer to point 4 of maintenance method for

details

Malfunction of compressor Compressor can't operate

Refer to point 5 of maintenance method for

details

9.3 Maintenance Method for Normal Malfunction

1. Air Conditioner Can't be Started Up

2. Poor Cooling (Heating) for Air Conditioner

3. Horizontal Louver Can't Swing

Possible Causes Discriminating Method (Air conditioner Status) Troubleshooting

No power supply, or poor

connection for power plug

After energization, operation indicator isn’t bright
and the buzzer can't give out sound

Conrm whether it's due to power failure. If yes,
wait for power recovery. If not, check power
supply circuit and make sure the power plug is

connected well.

Wrong wire connection between

indoor unit and outdoor unit,

or poor connection for wiring
terminals

Under normal power supply circumstances,
operation indicator isn't bright after energization

Check the circuit according to circuit diagram
and connect wires correctly. Make sure all
wiring terminals are connected rmly

Electric leakage for air conditioner

After energization, room circuit breaker trips off at

once

Make sure the air conditioner is grounded

reliably

Make sure wires of air conditioner is connected

correctly

Check the wiring inside air conditioner. Check
whether the insulation layer of power cord is
damaged; if yes, place the power cord.

Model selection for air switch is

improper

After energization, air switch trips off Select proper air switch

Malfunction of remote controller

After energization, operation indicator is bright,
while no display on remote controller or buttons
have no action.

Replace batteries for remote controller
Repair or replace remote controller

Possible Causes Discriminating Method (Air conditioner Status) Troubleshooting

Wrong wire connection, or poor

connection

Check the wiring status according to circuit

diagram

Connect wires according to wiring diagram to

make sure all wiring terminals are connected
rmly

Stepping motor is damaged Stepping motor can't operate Repair or replace stepping motor

Main board is damaged

Others are all normal, while horizontal louver

can't operate

Replace the main board with the same model

37

Installation and Maintenance

Service Manual

7. Abnormal Sound and Vibration

Possible causes Discriminating method (air conditioner status) Troubleshooting
When turn on or turn off the unit,
the panel and other parts will
expand and there's abnormal

sound

There's the sound of "PAPA"

Normal phenomenon. Abnormal sound will

disappear after a few minutes.

When turn on or turn off the unit,
there's abnormal sound due
to ow of refrigerant inside air

conditioner

Water-running sound can be heard

Normal phenomenon. Abnormal sound will

disappear after a few minutes.

Foreign objects inside the indoor
unit or there're parts touching
together inside the indoor unit

There's abnormal sound fro indoor unit

Remove foreign objects. Adjust all parts'
position of indoor unit, tighten screws and stick

damping plaster between connected parts

Foreign objects inside the outdoor
unit or there're parts touching
together inside the outdoor unit

There's abnormal sound fro outdoor unit

Remove foreign objects. Adjust all parts'
position of outdoor unit, tighten screws and
stick damping plaster between connected parts

Short circuit inside the magnetic

coil

During heating, the way valve has abnormal

electromagnetic sound

Replace magnetic coil

Abnormal shake of compressor Outdoor unit gives out abnormal sound

Adjust the support foot mat of compressor,
tighten the bolts

Abnormal sound inside the

compressor

Abnormal sound inside the compressor

If add too much refrigerant during maintenance,

please reduce refrigerant properly. Replace

compressor for other circumstances.

6. Air Conditioner is Leaking

Possible causes Discriminating method (air conditioner status) Troubleshooting

Drain pipe is blocked Water leaking from indoor unit

Eliminate the foreign objects inside the drain

pipe

Drain pipe is broken Water leaking from drain pipe Replace drain pipe

Wrapping is not tight

Water leaking from the pipe connection place of

indoor unit

Wrap it again and bundle it tightly

5. Compressor Can't Operate

Possible causes Discriminating method (air conditioner status) Troubleshooting

Wrong wire connection, or poor

connection

Check the wiring status according to circuit

diagram

Connect wires according to wiring diagram to

make sure all wiring terminals are connected
rmly

Capacity of compressor is
damaged

Measure the capacity of fan capacitor with an
universal meter and nd that the capacity is out of
the deviation range indicated on the nameplate of

fan capacitor.

Replace the compressor capacitor

Power voltage is a little low or

high

Use universal meter to measure the power supply
voltage. The voltage is a little high or low

Suggest to equip with voltage regulator

Coil of compressor is burnt out

Use universal meter to measure the resistance

between compressor terminals and it's 0

Repair or replace compressor

Cylinder of compressor is blocked Compressor can't operate Repair or replace compressor

4. ODU Fan Motor Can't Operate

Possible causes Discriminating method (air conditioner status) Troubleshooting

Wrong wire connection, or poor

connection

Check the wiring status according to circuit

diagram

Connect wires according to wiring diagram to

make sure all wiring terminals are connected
rmly

Capacity of the ODU fan motor is

damaged

Measure the capacity of fan capacitor with an
universal meter and nd that the capacity is out of
the deviation range indicated on the nameplate of

fan capacitor.

Replace the capacity of fan

Power voltage is a little low or

high

Use universal meter to measure the power supply
voltage. The voltage is a little high or low

Suggest to equip with voltage regulator

Motor of outdoor unit is damaged

When unit is on, cooling/heating performance

is bad and ODU compressor generates a lot of

noise and heat.

Change compressor oil and refrigerant. If no
better, replace the compressor with a new one

38

Installation and Maintenance

Service Manual

10.1 Indoor Unit

10. Exploded View and Parts List

2

23

36

1

3

9

19

20

8

12

13

29

31

33

39

17

41

40

38

15

28

37

4

5

6

7

10

11

14

16

18

21

22

24

42

43

44

35

34

32

30

27

25

26

46 45474849

FAN

MODE

IFEEL

CLOCK

TIMER

ON

X-FAN TEMP

TIMER
OFF

TURBO

SLEEP LIGHT

39

Installation and Maintenance

Service Manual

NO.

Description

Part Code

Qty

GWC36LB-D3NNB2A/I

Product Code CA433N00800

1 Front Panel Assy 2002215801 1
2 Decorative Strip Sub-Assy / /
3 Stand Bar 2421212001 1
4 Filter Sub-Assy

11122106

2

5 Front Case Sub-assy 20900700005 1
6 Upper Guide Louver 1051216601 1
7 Lower Guide Louver 1051216701 1
8 Axile Bush

10542704

6

9 Air Louver 2 1051216902 2
10 Air Louver 1 1051216802 16
11 Connecting Rod 10582086 2
12 Louver Clamp 26112158 9
13 Step Motor / /
14 Water Tray 2018213802 1
15 Water Tray Assy 00007000006 1
16 Screw Cover

2425200506 4
17 Rubber Plug (Water Tray) 76712012 1
18

Rear Case Sub-Assy 20162027 1

19 Cross Flow Fan 1 10352039 1
20 Bearing Holder Sub-assy

26152028

1

21 Cross Flow Fan 2 10352040 1
22 O-Gasket sub-assy of Bearing 76512051 1
23 Left Evaporator Support 24212041 1
24 Evaporator Assy 01002596 1
25 Wall Mounting Frame

01252398

1

26 Fan Motor 1501212003 1
27 Pipe Clamp 26112071 1
28 Drainage Hose 0523001404 1
29 Cover Plate 2012212402 1
30 Motor Fixed Clip

26112354

1

31 Step Motor 1521210701 1
32 Press Plate(Crank) 26112070 1
33 Crank-guide 10582041 1
34 Upper Crank 10562004 1
35 Lower Crank

10562005

1
36 Step Motor / /
37 Electric Box Assy 10000203125 1
38 Electric Box 20112127 1
39 Capacitor CBB61

3301074713

1
40 Terminal Board

42011233

1
41 Main Board 30135545 1
42 Display Board

30565277

1
43 Electric Box Cover 20102252 1
44 Electric Box Cover

20112044S

1
45 Remote Controller

30510112

1
46 Connecting Cable 4002052318 0
47 Connecting Cable

4002054026

0
48 Temperature Sensor

390000451

1
49 Ambient Temperature Sensor

390000591

1

Above data is subject to change without notice.

40

Installation and Maintenance

Service Manual

10.2 Outdoor Unit

9

7

6

8

1

2

20

21

5

3

4

2526

24

23

22

18

27

19

15

17

1413121110

16

41

Installation and Maintenance

Service Manual

NO.

Description

Part Code

Qty

GWC36LB-D3NNB2A/O

Product Code CA433W00800

1 Axial Flow Fan 10335014 1

2 Fan Motor 1501506203 1

3 Capacitor 3300008107 1

4 Main Board 30135843 1

5 Capacitor CBB61 3301074714 1

6 AC Contactor 44010256 1

7 Transformer 4311023601 1

8 Terminal Board 4201025801 1

9 Electric Box Assy 10000203124 1

10 Left Side Plate 01305043P 1

11 Top Cover Sub-Assy 01255014 1

12 Motor Support Sub-Assy 01705437 1

13 Clapboard 01235063 1

14 Condenser Assy 01163693 1

15 Inhalation Tube 03753450 1

16 Discharge Tube Sub-assy 03833306 1

17 Rear Grill 01473070 1

18 Valve Support Sub-Assy 01715020P 1

19 Cut-off Valve 07135058 1

20 Cut off Valve 07130239 1

21 Compressor and Fittings 00103903 1

22 Chassis Sub-assy 02803172P 1

23 Front Side Plate 01305086P 1

24 Left Handle 26235401 2

25 Cabinet 01435004P 1

26 Front Grill 22415003 1

27 Big Handle 2623500101 1

Above data is subject to change without notice.

42

Installation and Maintenance

Service Manual

11. Removal Procedure

11.1 Removal Procedure of Indoor Unit

Warning: Be sure to discharge the refrigerant completely

before removal.

Steps

Procedure

1.Before disassembly of the unit

2.Remove filter
panel

clasps

filter

Axonometric drawing for the complete
unit.

Open the panel.

Loosen the clasps on the filter.

Draw out two pieces of filter.

a

b

c

43

Installation and Maintenance

Service Manual

ProcedureSteps

3.Remove display

4.Remove panel

5.Remove horizontal louver

clasps

panel

horizontal louver

Remove screws fixing display, and then remove
the display.

Pull the clasps at both sides slightly, and then
remove the panel.

Remove the axial bush on the horizontal louver,
and then remove the horizontal louver.

display

44

Installation and Maintenance

Service Manual

a

b

a

b

c

6.Remove top cover of electric box

7.Remove front case

screw

top cover of electric box

screw caps

screws

front case

ProcedureSteps

Remove screws fixing the top cover of electric box.

Remove the top cover of electric box.

Remove the screw caps on front case.

Remove screws connecting the front case.

Remove the front case.

45

Installation and Maintenance

Service Manual

a

b

c

Steps

Procedure

8.Remove earthing wire

9.Remove electric box cover

screws

clasps

clasps

electric box cover

Remove earthing screws, and then remove
the earthing wire.

Loosen clasps at the left side of electric box.

Loosen clasps on the right side of electric box.

Remove electric box cover.

46

Installation and Maintenance

Service Manual

a

b

c

ProcedureSteps

10.Remove temperature sensor

11.Remove electric box

temperature sensor

screws

electric box

Pull out the indoor temperature sensor.

Pull out 6 sockets on PCB board.

Pull out two screws on electric box.

Remove the electric box.

47

Installation and Maintenance

Service Manual

Steps

Procedure

12.Remove water tray

13.Remove connection pipe between indoor and
outdoor units

14.Remove pipe-stopping plate

15.Remove damping board

water tray

connection position for indoor and outdoor units' connection pipe

pipe-stopping plate

screws

screws

damping board

Pull the water tray upwards, and then remove
the water tray.

Separate the connection pipe between
indoor and outdoor units.

Remove two screws on pipe-stopping plate for
indoor unit, and then remove the pipe-stopping
plate.

Remove 2 screws on damping board, and then
remove the damping board.

48

Installation and Maintenance

Service Manual

a

b

c

Steps

Procedure

16.Remove evaporator

17.Remove the fixing plate of motor

screws

evaporator

screws

Remove screws between evaporator and bottom
case.

Turn over the indoor unit and adjust the pipe line to
the position as shown by the broken line.

Lift up the evaporator, and then remove the
evaporator.

Remove 2 screws on fixing plate of motor, and then
remove the fixing pate of motor.

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a

ProcedureSteps

b

c

18.Remove cross flow blade and motor
blade

motor

Remove screws fixing cross flow blade and motor.

Remove the motor sub-assy.

Separate two cross flow blade.

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a

b

ProcedureSteps

19.Remove cushion rubber

cushion rubber

Remove the cushion rubber on cross flow blade.

Remove the cushion rubber from the base.

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11.2 Removal Procedure of Outdoor Unit

b

a

1.Remove top cover and front side plate

Remove the screws connecting the top cover with
the front panel, the left side plate and the right side
plate. Remove the top cover.

Remove the screws connecting the front panel with
the front case and the chassis. Remove the front
side plate.

a

Remove the screws connecting the front grille and
the front panel.Remove the front grille.

2.Remove front grille and front panel

front side plate

top cover

front grille

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b

Remove the screws connecting the front panel with
the chassis and the motor support. Remove the front
panel.

Remove the screws connecting the rear grille with
the left side plate and the right side plate. Remove
the rear grille．

Remove the screw fixing the handle.
Remove the handle.

3.Remove the rear grille

4.Remove the handle

front panel

handle

rear grille

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Remove the screws connecting the electric box
subassembly and the isolation sheet. Remove the
electric box subassembly.

Remove the screws connecting the right side plate
with the chassis, the valve support and the condenser
subassembly. Remove the right side plate
subassembly.

Unsolder the pipes connected to the compressor and
the condenser.Remove the suction pipe and the
discharge pipe.
(NOTE:Discharge the refrigerant before unsoldering)

6.Remove right side plate subassembly

5.Remove electric box subassembly

7.Remove suction pipe and discharge pipe

electric box

.

right side plate

suction pipe and

discharge pipe

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Remove the screws connecting the left side plate
and the chassis. Remove the left side plate.

Remove the nut on the axial flow blade.
Remove the blade.

Remove the tapping screws fixing the motor.
Disconnect the leading wire insert of the motor.
Remove the motor.

9.Remove axial flow blade

8.Remove the left side plate

10.Remove the motor

left side plate

axial flow blade

nut

motor

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Remove the tapping screws fixing the motor support.
Raise the motor support to remove it.

Remove the 2 bolts fixing the valve subassemblies.
Unsolder the welding joint connecting the gas valve
and the return air pipe. Remove the gas valve.
(Note: When unsoldering the soldering joint, wrap the
gas valve with wet cloth completely to avoid damage
to the valve caused by high temperature.)
Unsolder the welding joint connecting the liquid valve
and the connecting pipe.Remove the liquid valve.

Remove the 3 nuts fixing the compressor. Remove
the compressor.

12.Remove the valve subassembly

11.Remove the motor support

13.Remove the compressor

motor support

valve subassembly

compressor

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Remove the screws connecting the isolation sheet
with the side board of condenser subassembly and
the chassis. Remove the isolation sheet.

Remove the screws connecting the support plate
(condenser) and the condenser subassembly.
Remove the support plate (condenser).

Remove the screw connecting the condenser and
the chassis. Raise the condenser to remove it.

15.Remove support plate (condenser)

14.Remove the isolation sheet

16.Remove the condenser

isolation sheet

support plate

condenser

chassis

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Appendix:

1.Standard length of connection pipe

● 5m, 7.5m, 8m.

2.Min. length of connection pipe is 3m.

3.Max. length of connection pipe and max. high difference.

4.The additional refrigerant oil and refrigerant charging required after

prolonging connection pipe

● After the length of connection pipe is prolonged for 10m at the basis
of standard length, you should add 5ml of refrigerant oil for each

additional 5m of connection pipe.

● The calculation method of additional refrigerant charging amount (on
the basis of liquid pipe):

Appendix 1: Reference Sheet of Celsius and Fahrenheit

Appendix 2: Conguration of Connection Pipe

Cooling capacity

Max length of

connection pipe

Max height

difference

5000 Btu/h(1465 W) 15 m 5 m
7000 Btu/h(2051 W) 15 m 5 m

9000 Btu/h(2637 W) 15 m 10 m
12000 Btu/h(3516 W) 20 m 10 m
18000 Btu/h(5274 W) 25 m 10 m
24000 Btu/h(7032 W) 25 m 10 m
28000 Btu/h(8204 W) 30 m 10 m

36000 Btu/h(10548 W) 30 m 20 m
42000 Btu/h(12306 W) 30 m 20 m
48000 Btu/h(14064 W) 30 m 20 m

Set temperature

Conversion formula for Fahrenheit degree and Celsius degree: Tf=Tcx1.8+32

Ambient temperature

Fahrenheit

display

temperature

（℉）

Fahrenheit

（℉）

Celsius

（℃）

Fahrenheit

display

temperature

（℉）

Fahrenheit

（℉）

Celsius

（℃）

Fahrenheit

display

temperature

（℉）

Fahrenheit

（℉）

Celsius

（℃）

32/33 32 0 55/56 55.4 13 79/80 78.8 26
34/35 33.8 1 57/58 57.2 14 81 80.6 27

36 35.6 2 59/60 59 15 82/83 82.4 28
37/38 37.4 3 61/62 60.8 16 84/85 84.2 29
39/40 39.2 4 63 62.6 17 86/87 86 30
41/42 41 5 64/65 64.4 18 88/89 87.8 31
43/44 42.8 6 66/67 66.2 19 90 89.6 32

45 44.6 7 68/69 68 20 91/92 91.4 33
46/47 46.4 8 70/71 69.8 21 93/94 93.2 34
48/49 48.2 9 72 71.6 22 95/96 95 35
50/51 50 10 73/74 73.4 23 97/98 96.8 36
52/53 51.8 11 75/76 75.2 24 99 98.6 37

54 53.6 12 77/78 77 25

Fahrenheit

display

temperature

（℉）

Fahrenheit

（℉）

Celsius

（℃）

Fahrenheit

display

temperature

（℉）

Fahrenheit

（℉）

Celsius

（℃）

Fahrenheit

display

temperature

（℉）

Fahrenheit

（℉）

Celsius

（℃）

61 60.8 16 69/70 69.8 21 78/79 78.8 26
62/63 62.6 17 71/72 71.6 22 80/81 80.6 27
64/65 64.4 18 73/74 73.4 23 82/83 82.4 28
66/67 66.2 19 75/76 75.2 24 84/85 84.2 29

68 68 20 77 77 25 86 86 30

Additional refrigerant charging amount for R22, R407C, R410A and R134a

Diameter of connection pipe Outdoor unit throttle

Liquid pipe(mm) Gas pipe(mm) Cooling only(g/m) Cooling and heating(g/m)

Ф6 Ф9.5 or Ф12 15 20

Ф6 or Ф9.5 Ф16 or Ф19 15 20

Ф12 Ф19 or Ф22.2 30 120
Ф16 Ф25.4 or Ф31.8 60 120
Ф19 / 250 250

Ф22.2 / 350 350

● When the length of connection pipe is above 5m, add refrigerant according to the prolonged length of liquid pipe. The additional
refrigerant charging amount per meter is different according to the diameter of liquid pipe. See the following sheet.

● Additional refrigerant charging amount = prolonged length of liquid pipe X additional refrigerant charging amount per meter

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F:Inspection

● Check the quality of expanding port. If there is any blemish, expand the
port again according to the steps above.

The length is equal

Improper expanding

leaning

damaged

surface

crack uneven

thicknes

s

Smooth surface

Downwards

Pipe

Shaper

Union pipe

Pipe

Expander

Hard
mold

Pipe

Pipe

Pipe cutter

Leaning Uneven Burr

Improper pipe expanding is the main cause of refrigerant leakage.Please
expand the pipe according to the following steps:

A:Cut the pip

● Conrm the pipe length according to the distance of indoor unit and outdoor unit.

● Cut the required pipe with pipe cutter.

B:Remove the burrs

● Remove the burrs with shaper and prevent the burrs from getting into the pipe.

C:Put on suitable insulating pipe

D:Put on the union nut

● Remove the union nut on the indoor connection pipe and outdoor valve; install

the union nut on the pipe.

E:Expand the port

● Expand the port with expander.

● "A" is different according to the diameter, please refer to the sheet below:

Outer diameter(mm)

A(mm)

Max Min

Ф6 - 6.35 (1/4") 1.3 0.7

Ф9.52 (3/8”) 1.6 1.0
Ф12 - 12.70 (1/2”) 1.8 1.0
Ф16 - 15.88 (5/8”) 2.4 2.2

Appendix 3: Pipe Expanding Method

Note:

Note:

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Installation and Maintenance

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Appendix 4: List of Resistance for Temperature Sensor

Resistance Table of Ambient Temperature Sensor for Indoor and Outdoor Units(15K)

Temp(oC) Resistance(kΩ) Temp(oC) Resistance(kΩ) Temp(oC) Resistance(kΩ) Temp(oC) Resistance(kΩ)

-19 138.1 20 18.75 59 3.848 98 1.071

-18 128.6 21 17.93 60 3.711 99 1.039

-17 121.6 22 17.14 61 3.579 100 1.009

-16 115 23 16.39 62 3.454 101 0.98

-15 108.7 24 15.68 63 3.333 102 0.952

-14 102.9 25 15 64 3.217 103 0.925

-13 97.4 26 14.36 65 3.105 104 0.898

-12 92.22 27 13.74 66 2.998 105 0.873

-11 87.35 28 13.16 67 2.896 106 0.848

-10 82.75 29 12.6 68 2.797 107 0.825

-9 78.43 30 12.07 69 2.702 108 0.802

-8 74.35 31 11.57 70 2.611 109 0.779

-7 70.5 32 11.09 71 2.523 110 0.758

-6 66.88 33 10.63 72 2.439 111 0.737

-5 63.46 34 10.2 73 2.358 112 0.717

-4 60.23 35 9.779 74 2.28 11 3 0.697

-3 57.18 36 9.382 75 2.206 114 0.678

-2 54.31 37 9.003 76 2.133 115 0.66

-1 51.59 38 8.642 77 2.064 116 0.642

0 49.02 39 8.297 78 1.997 117 0.625

1 46.6 40 7.967 79 1.933 118 0.608

2 44.31 41 7.653 80 1.871 119 0.592

3 42.14 42 7.352 81 1.811 120 0.577

4 40.09 43 7.065 82 1.754 121 0.561

5 38.15 44 6.791 83 1.699 122 0.547

6 36.32 45 6.529 84 1.645 123 0.532

7 34.58 46 6.278 85 1.594 124 0.519

8 32.94 47 6.038 86 1.544 125 0.505

9 31.38 48 5.809 87 1.497 126 0.492

10 29.9 49 5.589 88 1.451 127 0.48

11 28.51 50 5.379 89 1.408 128 0.467

12 27.18 51 5.197 90 1.363 129 0.456

13 25.92 52 4.986 91 1.322 130 0.444

14 24.73 53 4.802 92 1.282 131 0.433

15 23.6 54 4.625 93 1.244 132 0.422

16 22.53 55 4.456 94 1.207 133 0.412

17 21.51 56 4.294 95 1.171 134 0.401

18 20.54 57 4.139 96 1.136 135 0.391

19 19.63 58 3.99 97 1.103 136 0.382

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Resistance Table of Tube Temperature Sensors for Indoor and Outdoor(20K)

Temp(oC) Resistance(kΩ) Temp(oC) Resistance(kΩ) Temp(oC) Resistance(kΩ) Temp(oC) Resistance(kΩ)

-19 181.4 20 25.01 59 5.13 98 1.427

-18 171.4 21 23.9 60 4.948 99 1.386

-17 162.1 22 22.85 61 4.773 100 1.346

-16 153.3 23 21.85 62 4.605 101 1.307

-15 145 24 20.9 63 4.443 102 1.269

-14 137.2 25 20 64 4.289 103 1.233

-13 129.9 26 19.14 65 4.14 104 1.198

-12 123 27 18.13 66 3.998 105 1.164

-11 116.5 28 17.55 67 3.861 106 1.131

-10 110.3 29 16.8 68 3.729 107 1.099

-9 104.6 30 16.1 69 3.603 108 1.069

-8 99.13 31 15.43 70 3.481 109 1.039

-7 94 32 14.79 71 3.364 110 1.01

-6 89.17 33 14.18 72 3.252 111 0.983

-5 84.61 34 13.59 73 3.144 112 0.956

-4 80.31 35 13.04 74 3.04 113 0.93

-3 76.24 36 12.51 75 2.94 114 0.904

-2 72.41 37 12 76 2.844 11 5 0.88

-1 68.79 38 11.52 77 2.752 116 0.856

0 65.37 39 11.06 78 2.663 117 0.833

1 62.13 40 10.62 79 2.577 118 0.811

2 59.08 41 10.2 80 2.495 11 9 0.77

3 56.19 42 9.803 81 2.415 120 0.769

4 53.46 43 9.42 82 2.339 121 0.746

5 50.87 44 9.054 83 2.265 122 0.729

6 48.42 45 8.705 84 2.194 123 0.71

7 46.11 46 8.37 85 2.125 124 0.692

8 43.92 47 8.051 86 2.059 125 0.674

9 41.84 48 7.745 87 1.996 126 0.658

10 39.87 49 7.453 88 1.934 127 0.64

11 38.01 50 7.173 89 1.875 128 0.623

12 36.24 51 6.905 90 1.818 129 0.607

13 34.57 52 6.648 91 1.736 130 0.592

14 32.98 53 6.403 92 1.71 131 0.577

15 31.47 54 6.167 93 1.658 132 0.563

16 30.04 55 5.942 94 1.609 133 0.549

17 28.68 56 5.726 95 1.561 134 0.535

18 27.39 57 5.519 96 1.515 135 0.521

19 26.17 58 5.32 97 1.47 136 0.509

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Resistance Table of Discharge Temperature Sensor for Outdoor(50K)

Temp(oC) Resistance(kΩ) Temp(oC) Resistance(kΩ) Temp(oC) Resistance(kΩ) Temp(oC) Resistance(kΩ)

-29 853.5 10 98 49 18.34 88 4.75

-28 799.8 11 93.42 50 17.65 89 4.61

-27 750 12 89.07 51 16.99 90 4.47

-26 703.8 13 84.95 52 16.36 91 4.33

-25 660.8 14 81.05 53 15.75 92 4.20

-24 620.8 15 77.35 54 15.17 93 4.08

-23 580.6 16 73.83 55 14.62 94 3.96

-22 548.9 17 70.5 56 14.09 95 3.84

-21 516.6 18 67.34 57 13.58 96 3.73

-20 486.5 19 64.33 58 13.09 97 3.62

-19 458.3 20 61.48 59 12.62 98 3.51

-18 432 21 58.77 60 12.17 99 3.41

-17 407.4 22 56.19 61 11.74 100 3.32

-16 384.5 23 53.74 62 11.32 101 3.22

-15 362.9 24 51.41 63 10.93 102 3.13

-14 342.8 25 49.19 64 10.54 103 3.04

-13 323.9 26 47.08 65 10.18 104 2.96

-12 306.2 27 45.07 66 9.83 105 2.87

-11 289.6 28 43.16 67 9.49 106 2.79

-10 274 29 41.34 68 9.17 107 2.72

-9 259.3 30 39.61 69 8.85 108 2.64

-8 245.6 31 37.96 70 8.56 109 2.57

-7 232.6 32 36.38 71 8.27 11 0 2.50

-6 220.5 33 34.88 72 7.99 111 2.43

-5 209 34 33.45 73 7.73 112 2.37

-4 198.3 35 32.09 74 7.47 11 3 2.30

-3 199.1 36 30.79 75 7.22 11 4 2.24

-2 178.5 37 29.54 76 7.00 11 5 2.18

-1 169.5 38 28.36 77 6.76 11 6 2.12

0 161 39 27.23 78 6.54 117 2.07

1 153 40 26.15 79 6.33 118 2.02

2 145.4 41 25.11 80 6.13 11 9 1.96

3 138.3 42 24.13 81 5.93 120 1.91

4 131.5 43 23.19 82 5.75 121 1.86

5 125.1 44 22.29 83 5.57 122 1.82

6 119.1 45 21.43 84 5.39 123 1.77

7 113.4 46 20.6 85 5.22 124 1.73

8 108 47 19.81 86 5.06 125 1.68

9 102.8 48 19.06 87 4.90 126 1.64

GREE ELECTRIC APPLIANCES,INC.OF ZHUHAI

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dd: West Jinji Rd, Qianshan, Zhuhai, Guangdong, China 519070

Tel: [phone] Fax: [phone]

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HONG KONG GREE ELECTRIC APPLIANCES SALES LIMITED

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Tel: [phone] Fax: [phone]

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