GREE ELECTRIC GWC12NC-K3NNA3E, GWH12NC-K3NNA9F Service Manual

Change for Life

Service Manual

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20

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18

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16

15

14

13

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1 Interface of PG motor

2 Neutral wire insert

3 4-way valve insert

4 Outdoor fan insert

5 Solid relay

6 Interface of up&down swing

7 Interface of PG motor feedback

8 Relay of controlling outdoor unit

9 Relay of controlling 4-way valve

10 Connected to display board

Terminal of indoor tube

11 temperature sensor

Terminal of indoor ambient

12 temperature sensor

13 Ouput of transformer

14 Live wire

15 Fuse

Compressor relay and live wire

16 terminal

17 Relay of controlling cold plasma

18 Piezoresistance

19 Fan capacitor

20 Live wire for health function

21 Neutral wire for health function

22 Jumper Cap Interface

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Buttons on Remote Controller

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3

4

6

8

10

12

2

5

7

9

11

1 ON/OFF Button

2 MODE Button

3

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4 FAN Button

5 Button

6

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7 TIMER ON/TIMER-OFF Button

8 X-FAN Button

9 TEMP Button

10

TURBO Button

11 LIGHT Button

12 SLEEP Button

Introduction for Icons on Display Screen

Auto mode

Cool mode

Dry mode

Fan mode

Heat mode

Clock

Sleep mode

:Set temp.

:Indoor ambient temp.

:Outdoor ambient temp.

Up&down swing

Set fan speed

Send signal

X-fan mode

Set temperature

Turbo mode

Set time

TIMER ON/TIMER OFF

Child lock

Light

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.

1. ON/OFF Button

Press this button can turn on or turn off the air conditioner. After turning on the air conditioner, operation indicator " " on indoor unit’s display is ON (green indicator. The colour is different for different models), and indoor unit will give out a sound.

2. MODE Button

Press this button to select your required operation mode.

AUTO COOL DRY FAN HEAT

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● When selecting auto mode, Air conditioner will start auto operation according to indoor ambient temperature.Set temperature can’t be adjusted and will not be displayed as well. Press "FAN" button can adjust fan speed. Press " " button can adjust fan blowing angle.

● After selecting cool mode, air conditioner will operate under cool mode. Cool indicator " " on indoor unit is ON. Press "+" or "-" button to adjust set temperature. Press "FAN" button to adjust fan speed. Press " " button to adjust fan blowing angle.

● When selecting dry mode, the air conditioner operates at low speed under dry mode. Dry indicator " " on indoor unit is ON. Under dry mode, fan speed can’t be adjusted. Press " " button to adjust fan blowing angle.

● When selecting fan mode, the air conditioner will only blow fan, no cooling and no heating.All indicators are OFF.Operation indicator is

ON.Press "FAN" button to adjust fan speed. Press " " button to adjust fan blowing angle.

● When selecting heating mode, the air conditioner operates under heat mode. Heat indicator " " on indoor unit is ON. Press “+” or “-“ button to adjust set temperature Press “FAN” button to adjust fan speed. Press " " button to adjust fan blowing angle.(Cooling only unit won’t receive heating mode signal. If setting heat mode with remote controller, press ON/OFF button can’t start up the unit).

Note:

● For preventing cold air, after starting up heating mode, indoor unit will delay 1~5minutes to blow air (actual delay time is depend on indoor ambient temperature).

● Set temperature range from remote controller: 16~30 ; Fan speed: auto, low speed,medium speed, high speed.

3. “+” or“-” Button

● Press “+” or “-“ button once increase or decrease set temperature 1 .Holding "+" or "-" button, 2s later, set temperature on remote controller will change quickly. On releasing button after setting is fi nished, temperature indicator on indoor unit will change accordingly.

(Temperature can’t be adjusted under auto mode)

● When setting TIMER ON, TIMER OFF or CLOCK, press “+” or “-“ button to adjust time.(Refer to CLOCK, TIMER ON, TIMER OFF buttons)

4. FAN Button

Pressing this button can set fan speed circularly as: auto (AUTO), low( ) ,medium( ),high(

Auto

).

Note:

● Under AUTO speed, the IDU fan motor will adjust the fan speed (high, medium or low speed) according to ambient temperature.

● Fan speed under dry mode is low speed.

5. Button

Pressing this button can select up&down swing angle. Fan blow angle can be selected circularly as below: no display

(horizontal louvers stops at current position)

● When selecting " " , air conditioner is blowing fan automatically. Horizontal louver will automatically swing up & down at maximum angle.

● When selecting " position.

ǃ ǃ ǃ ǃ ", air conditioner is blowing fan at fixed position. Horizontal louver will stop at the fixed

● When selecting " ǃ ǃ ”, air conditioner is blowing fan at fi xed angle. Horizontal louver will send air at the fi xed angle.

● Hold " " button above 2s to set your required swing angle. When reaching your required angle, release the button.

Note:

" ǃ ǃ " may not be available. When air conditioner receives this signal, the air conditioner will blow fan automatically.

6. CLOCK Button

Press this button to set clock time. " " icon on remote controller will blink. Pess "+" or "-" button within 5s to set clock time. Each pressing of "+" or "-" button, clock time will increase or decrease 1 minute. Hold "+" or "-" button, 2s later, time will change quickly.

Release this button when reaching your required time. Press “CLOCK" button to confi rm the time. " " icon stops blinking.

Note:

● Clock time adopts 24-hour mode.

● The interval between two operation can’t exceeds 5s. Otherwise, remote controller will quit setting status. Operation for TIMER

ON/TIMER OFF is the same.

7. TIMER-ON/TIMER-OFF Button

● TIMER ON button

TIMER ON button

“TIMER ON” button can set the time for timer on. After pressing this button, " " icon disappears and the word “ON" on remote

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6HUYLFH0DQXDO controller blinks. Press "+" or "-"button to adjust TIMER ON setting. After each pressing "+" or "-"button, TIMER ON setting will increase or decrease 1min. Hold "+" or "-"button, 2s later, the time will change quickly until reaching your required time. Press “ TIMER ON”to confi rm it. The word “ON" will stop blinking. " " icon resumes displaying.

Cancel TIMER ON: Under the condition that TIMER ON is started up, press “TIMER ON” button to cancel it.

● TIMER OFF button

"TIMER OFF" button can set the time for timer off. After pressing this button, " " icon disappears and the word "OFF" on remote controller blinks. Press "+" or "-" button to adjust TIMER OFF setting. After each pressing "+" or "-" button, TIMER OFF setting will increase or decrease 1min. Hold "+" or "-" button, 2s later, the time will change quickly until reaching your required time. Press "TIMER OFF" to confirm it .The word "OFF"will stop blinking " " icon resumes displaying. Cancel TIMER OFF. Under the condition that TIMER OFF is started up, press “TIMER OFF” button to cancel it.

Note:

● Under on and off status, you can set TIMER OFF or TIMER on simultaneously.

● Before setting TIMER ON or TIMER OFF, please adjust the clock time.

● After starting up TIMER ON or TIMER OFF, set the constant circulating valid. After that, air conditioner will be turned on or turned off according to setting time. ON/OFF button has no effect on setting. If you don’t need this function, please use remote controller to cancel it.

8. X-FAN Button

Press this button under cool and dry mode to start up x-fan function, and " " icon on remote controller will be displayed. Press this button again to cancel x-fan function, and " "icon will disappear.

Note:

● When x-fan function is on, if the air conditioner is turned off, indoor fan will still operate at low speed for a while to blow the residual water inside the air duct.

● During x-fan operation, press X-FAN button to turn off x-fan function. Indoor fan will stop operation immediately.

9. TEMP Button

By pressing this button, you can see indoor set temperature, indoor ambient temperature or outdoor ambient temperature on indoor unit’s display. The setting on remote controlleris selected circularly as below: no display

When selecting " " or no display with remote controller, temperature indicator on indoor unit displays set temperature;

When selecting " " with remote controller, temperature indicator on indoor unit displays indoor ambient temperature;

When selecting " " with remote controller, temperature indicator on indoor unit displays outdoor ambient temperature.

Note:

● Outdoor temperature display is not available for some models. At that time, indoor unit receives" " signal, while it displays indoor set temperature.

● It’s defaulted to display set temperature when turning on the unit.There is no display in the remote controller.

● Only for the models whose indoor unit has dual-8 display

10. TURBO Button

Under COOL or HEAT mode, press this button to turn to quick COOL or quick HEAT mode. " " icon is displayed on remote controller. Press this button again to exit turbo function and " " icon will disappear.

11. SLEEP Button

Under COOL, HEAT mode, press this button to start up sleep function. " " icon is displayed on remote controller. Press this button again to cancel sleep function and " " icon will disappear.

12. LIGHT Button

Press this button to turn off display light on indoor unit. " " icon on remote controller disappears. Press this button again to turn on display light. " " icon is displayed.

Function Introduction for Combination Buttons

Child lock function:

Press "+"and "-" simultaneously to turn on or turn off child lock function. When child lock function is on, " " icon is displayed on remote controller. If you operate the remote controller, it won’t send signal.

Temperature display switchover function:

Under OFF status, press "-" and "MODE" buttons simultaneously to switch temperature display between and .

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Operation Guide

1. After putting through the power, press “ON/OFF” button on remote controller to turn on the air conditioner.

2. Press "MODE" button to select your required mode:AUTO,COOL,DRY,FAN,HEAT.

3. Press “+” or “-“ button to set your required temperature. (Temperature can’t be adjusted under auto mode).

4. Press ‘FAN” button to set your required fan speed: auto, low, medium and high speed.

5. Press " " button to select fan blowing angle.

1

3

4

Replacement of Batteries in Remote Controller

1.Press the back side of remote controller marked with“ ”as shown in the fi g, and then push out the cover of battery box along the arrow direction.

2. Replace two 7# (AAA 1.5V) dry batteries, and make sure the position of “+” polar and “-“ polar are correct.

3. Reinstall the cover of battery box.

Note:

● During operation, point the remote control signal sender at the receiving window on indoor unit.

● The distance between signal sender and receiving window should be no more than

8m, and there should be no obstacles between them.

● Signal may be interfered easily in the room where there is fluorescent lamp or wireless telephone; remote controller should be close to indoor unit during operation.

● Replace new batteries of the same model when replacement is required.

● When you don’t use remote controller for a long time, please take out the batteries.

● If the display on remote controller is fuzzy or there’s no display, please replace batteries.

Signal sender

Cover of battery box

Battery

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Remove

2

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Read the requirements for electric connection select installation location

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Install wall-mounting frame, drill wall holes

Connect pipes of indoor unit and drainage pipe

Connect wires of indoor unit

Bind up pipes and hang the indoor unit

Select outdoor unit installation location

Install the support of outdoor unit

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Install drainage joint of outdoor unit

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Connect pipes of outdoor unit

Connect wires of outdoor unit

Neaten the pipes

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Troubleshooting for

F1,F2 malfunction

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

no no yes

Insert the temperature sensor tightly

Is malfunction eliminated

Is there short circuit due to trip-over of the parts?

yes

Make the parts upright no no

Is the temperature sensor normal according to the Resistance

Table?

Is malfunction eliminated no

Replace it with a temperature sensor with the same model yes yes no

Is malfunction removed yes

Replace the mainboard with the same model.

yes

End

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Troubleshooting for

H6 malfunction

Stir the blade with a tool to see whether

the blade rotates

smoothly yes no

Tighten the screw; reassemble the blade, motor and shaft bearing rubber base sub-assy to make sure there is no foreign object between them no

Is malfunction eliminated yes

Check if the connection of PG motor feedback terminal is firm.

yes no no

Insert the control terminal of PG motor tightly

Is malfunction eliminated yes

Check if the connection

of PG motor control

terminal is firm.

no

Reinstall the blade and motor correctly yes no Is malfunction eliminated yes

Turn on the unit again ; measure whether the output voltage on control terminal for PG motor is more than 50V within 1 min after the louvers are opened yes

Measure the voltage of this foot to neutral wire on the mainboard no yes

Is the motor

started up no

Replace PG motor

Is malfunction eliminated no

Replace the mainboard with the same model.

yes yes

End

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Troubleshooting for C5 malfunction

Is there jumper cap on the mainboard ?

yes

Is the jumper cap inserted correctly and

tightly ?

no yes no

Replace the jumper cap with the same model

Is malfunction eliminated no

Replace the mainboard with the same model.

End no

Assemble the jumper cap with the same model

Appearance of the jumper cap

Is malfunction eliminated no

Insert the jumper cap tightly

Is malfunction eliminated yes yes yes

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Troubleshooting for U8 malfunction

Re-energize1 minute after de-erergization

U8 is still displayed

Yes

The zero-cross detection circuit of the mainboard is defined abnormal.Replace the mainboard with the same model

No

The unit returns to normal.

Conclusion:U8 is displayed due to instant energization afte deenergization while the capacitor discharges slowly.

End

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1. Before disassembly

2. Remove big handle

Remove the connection screw fixing the big handle and then remove the handle.

3. Remove top panel

Remove connection screws connecting the top panel with the front panel and the right side plate, and then remove the top panel.

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Remove connection screws between the front grille and the front panel. Then remove the front grille.

5. Remove front panel

Remove connection screws connecting the front panel with the chassis and the motor support, and then remove the front panel.

front grille front panel

6. Remove right side plate

Remove connection screws connecting the right side plate with the chassis, the valve support and the electric box. Then remove the right side plate.

7. Remove axial flow blade

Remove the nut on the blade and then remove the axial flow blade.

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Remove the 4 tapping screws fixing the motor and disconnect the leading wire insert of the motor. Then remove the motor.

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9. Remove electric box

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Remove the 3 screws fixing the isolation sheet and then remove the isolation sheet. isolation sheet

11 . Remove soundproof sponge

Remove the soundproof sponge wrapping the compressor. soundproof sponge

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12. Remove magnet coil

Remove the screw fixing the magnet coil and then remove the coil. magnet coil

13. Remove valves and 4-way valve subassembl y

Unsolder welding joint connecting the capillary, the valve and the outlet pipe of condenser to remove the capillary. Do not block the capillary

Remove the 2 screws fixing the gas valve and unsolder the welding point between the gas valve and the air-return pipe to remove the gas valve.

(NOTE: Discharge the refrigerant completely before unsoldering; when unsoldering, wrap the gas valve with a wet cloth completely to avoid

Remove the 2 screws fixing the liquid valve and unsolder the welding joint connecting the liquid valve to the Y-type pipe to remove the liquid valve.

Unsolder the welding joint connecting the 4-way valve, the compressor and the condenser to remove the 4-way valve.

14. Remove compressor

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GREE ELECTRIC APPLIANCES,INC.OF ZHUHAI

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

Tel: (+86-756) 8522218 Fax: (+86-756) 8669426

Email: [email protected] Http://www.gree.com

HONG KONG GREE ELECTRIC APPLIANCES SALES LIMITED

Add: Unit 2612,26/F.,Miramar Tower 132 Nathan Road,TST,Kowloon,HK

Tel: (852) 31658898 Fax: (852) 31651029