Gree GVH24AK-K3DNC6A User manual

GREE ELECTRIC APPLIANCES,INC.OF ZHUHAI
Change for Life
Service Manual
Model: GVH24AK-K3DNC6A
(Refrigerant R410A)

Service Manual
Table of Contents
Table of Contents
Part Ⅰ: Technical Information.......................................................................1
1. Summary......................................................................................................................1
2. Specications..........................................................................................................2
2.1 Specication Sheet...........................................................................................................2
2.2 Operation Characteristic Curve ........................................................................................4
2.3 Capacity Variation Ratio According to Temperature .........................................................4
2.4 Cooling and Heating Data Sheet in Rated Frequency .....................................................5
2.5 Noise Curve......................................................................................................................5
3. Outline Dimension Diagram........................................................................6
3.1 Indoor Unit........................................................................................................................6
3.2 Outdoor Unit .....................................................................................................................7
4. Refrigerant System Diagram......................................................................8
5. Electrical Part...........................................................................................................9
5.1 Wiring Diagram.................................................................................................................9
5.2 PCB Printed Diagram .....................................................................................................11
6. Function and Control......................................................................................15
6.1 Function Buttons and Displayer ....................................................................................15
6.2 Remote Controller Introduction .....................................................................................17
6.3 Operation Method...........................................................................................................21
6.4 Brief Description of Modes and Functions......................................................................22
Part Ⅱ: Installation and Maintenance .................................................26
7. Notes for Installation and Maintenance..........................................26
8. Installation................................................................................................................28
8.1 Important Notes .............................................................................................................28
8.2 Basic Requirements of Installation Location .................................................................28
8.3 Selection of installation location .....................................................................................28
8.4 Precautions of Connecting Pipe ....................................................................................28
8.5 Requirement of Electric Safety.......................................................................................29
8.6 Installation of Indoor Unit................................................................................................30
8.7 Installation of Outdoor Unit.............................................................................................32
8.8 Check after Installation and Test operation ....................................................................34
8.9 Installation of Anti-tilting Chain .......................................................................................34

Service Manual
Table of Contents
9. Maintenance............................................................................................................35
9.1 Key Test Point ...............................................................................................................35
9.2 Procedure of Troubleshooting ........................................................................................37
9.3 Troubleshooting for Normal Malfunction.........................................................................60
10. Exploded View and Parts List ..............................................................62
10.1 Indoor Unit....................................................................................................................62
10.2 Outdoor Unit .................................................................................................................65
11. Removal Procedure.......................................................................................67
11.1 Removal Procedure of Indoor Unit ...............................................................................67
11.2 Removal Procedure of Outdoor Unit ............................................................................72
Appendix:........................................................................................................................77
Appendix 1: Reference Sheet of Celsius and Fahrenheit ....................................................77
Appendix 2: Conguration of Connection Pipe.....................................................................77
Appendix 3: Pipe Expanding Method ...................................................................................78
Appendix 4: List of Resistance for Temperature Sensor ......................................................79

1
Technical Information
Service Manual
1. Summary
Part Ⅰ: Technical Information
Indoor Unit
GVH24AK-K3DNC6A/I
Outdoor Unit
Remote Controller
SAA1FB3
GVH24AK-K3DNC6A/O

2Technical Information
Service Manual
2. Specications
2.1 Specication Sheet
Parameter Unit Value
Model GVH24AK-K3DNC6A
Product Code CH074000100
Power
Supply
Rated Voltage V~ 220-240
Rated Frequency Hz 50
Phases 1
Power Supply Mode Indoor
Cooling Capacity(Min~Max) W 7200(1500~8800)
Heating Capacity(Min~Max) W 9500(100~10020)
Cooling Power Input(Min~Max) W 2140(340~3250)
Heating Power Input(Min~Max) W 3060(270~4000)
Cooling Current Input A 9.5
Heating Current Input A 13.5
Rated Input W 4000
Rated Current A 17.4
Air Flow Volume (SH/H/MH/M/ML/L/SL) m3/h 1200/1100/1000/900/800/700/550
Dehumidifying Volume L/h 2
EER W/W 3.36
COP W/W 3.10
SEER W/W 6.10
SCOP W/W 4.00
Application Area m227-42
Indoor
Unit
Indoor Unit Model GVH24AK-K3DNC6A/I
Indoor Unit Product Code CH074N00100
Fan Type Cross-ow
Fan Diameter Length(DXL) mm Φ106X961
Cooling Speed (SH/H/MH/M/ML/L/SL) r/min 1140/1050/950/850/750/650/500
Heating Speed (SH/H/MH/M/ML/L/SL) r/min 1140/1050/950/850/750/650/500
Fan Motor Power Output W 30
Fan Motor RLA A 0.22
Fan Motor Capacitor μF /
Heater Power Input W 2100
Evaporator Form Aluminum Fin-copper Tube
Evaporator Pipe Diameter mm Ф7
Evaporator Row-n Gap mm 2-1.5
Evaporator Coil Length (LXDXW) mm 440X25.4X952.5
Swing Motor Model MP35GT
Swing Motor Power Output W 2.5
Fuse Current A 3.15
Sound Pressure Level (SH/H/MH/M/ML/L/SL) dB (A) 48/45/43/40/37/35/30
Sound Power Level (SH/H/MH/M/ML/L/SL) dB (A) 58/55/53/50/47/45/40
Dimension (WXHXD) mm 395X1844X462
Dimension of Carton Box (LXWXH) mm 575X498X2020
Dimension of Package(LXWXH) mm 578X501X2035
Net Weight kg 46
Gross Weight kg 64

3
Technical Information
Service Manual
The above data is subject to change without notice. Please refer to the nameplate of the unit.
Outdoor
Unit
Outdoor Unit Model GVH24AK-K3DNC6A/O
Outdoor Unit Product Code CH074W00100
Compressor Manufacturer ZHUHAI LANDA COMPRESSOR CO,LTD.
Compressor Model QXAT-D20zF030
Compressor Oil RB68EP
Compressor Type Rotary
Compressor LRA. A 30
Compressor RLA A 15
Compressor Power Input W 2300
Compressor Overload Protector 1NT11L-6233/HPC 115/95 /KSD115
Throttling Method Electron expansion valve
Set Temperature Range ºC 16~30
Cooling Operation Ambient Temperature Range ºC 18~54
Heating Operation Ambient Temperature Range ºC -30~24
Condenser Form Aluminum Fin-copper Tube
Condenser Pipe Diameter mm Ф7
Condenser Rows-n Gap mm 2-1.4
Condenser Coil Length (LXDXW) mm 985X38.1X748
Fan Motor Speed rpm 780/740/710/680
Fan Motor Power Output W 90
Fan Motor RLA A 0.39
Fan Motor Capacitor μF /
Outdoor Unit Air Flow Volume m3/h 4000
Fan Type Axial-ow
Fan Diameter mm Ф550
Defrosting Method Automatic Defrosting
Climate Type T1
Isolation I
Moisture Protection IPX4
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 1000X790X427
Dimension of Carton Box (LXWXH) mm 1080X485X840
Dimension of Package(LXWXH) mm 1083X488X855
Net Weight kg 63
Gross Weight kg 68
Refrigerant R410A
Refrigerant Charge kg 2.0
Connection
Pipe
Connection Pipe Length m 5
Connection Pipe Gas Additional Charge g/m 50
Outer Diameter Liquid Pipe mm Ф6
Outer Diameter Gas Pipe mm Ф16
Max Distance Height m 10
Max Distance Length m 25
Note: The connection pipe applies metric diameter.

4Technical Information
Service Manual
2.2 Operation Characteristic Curve
2.3 Capacity Variation Ratio According to Temperature
Cooling
Cooling
Heating
Heating
Current(A)
Current(A)
01020304050607090 80 01020304050607080901 01
10
2100
11
10
9
8
7
6
5
4
3
2
1
0
Compressor speed (rps)
11
10
9
8
7
6
5
4
3
2
1
0
Compressor speed (rps)
Conditions
Indoor: DB27°C/WB19°C
Indoor air flow: High
Pipe length: 5m
Conditions
Indoor: DB20°C/WB15°C
Indoor air flow: High
Pipe length: 5m
Outdoor Temp.(°C) Outdoor Temp.(°C)
Capacity ratio(%)
Capacity ratio(%)
29 34 39 44 49 54
60
70
80
90
100
110
120
50
40 40
50
120
110
100
90
80
70
60
10
8-07-20
-30 -15
Conditions
Indoor: DB20°C/WB15°C
Indoor air flow: High
Pipe length: 5m
Conditions
Indoor: DB27°C/WB19°C
Indoor air flow: High
Pipe length: 5m

5
Technical Information
Service Manual
2.4 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
Compressor
frequency
(Hz)
Indoor Outdoor P (MPa) T1 (°C) T2 (°C)
27/19 35/24 24K 0.9 to 1.1 in:8~11
out:11~14
in:65~75
out:37~43 Super High High 53
Rated heating
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
Compressor
frequency
(Hz)
Indoor Outdoor P (MPa) T1 (°C) T2 (°C)
20/- 7/6 24K 2.0 to 2.3 in:75~8
out:33~38
in:1~3
out:4~8 Super High High 75
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:
Heating:
2.5 Noise Curve
Indoor side noise Outdoor side noise
45
50
35
40
30
25
Indoor side noise Outdoor side noise
Indoor fan motor rotating speed
SH MH MMLSLLH
Noise dB(A)
48
50
52
54
56
58
60
62
20 30 40 50 60 70 80 90
100
Compressor frequency(Hz)
Noise dB(A)
Heating
Cooling

6Technical Information
Service Manual
3. Outline Dimension Diagram
3.1 Indoor Unit
Unit:mm
400
462 1842

7
Technical Information
Service Manual
3.2 Outdoor Unit
Unit:mm
1000
790
395
610
920 370
427

8Technical Information
Service Manual
4. Refrigerant System Diagram
Connection pipe specication:
Liquid pipe:1/4" (6mm)
Gas pipe:5/8" (16mm)
Indoor unit Outdoor unit
COOLING
HEATING
4-Way valve
Discharge
Suction
Heat
exchanger
(evaporator) Heat
exchanger
(condenser)
Valve
Valve
Liquid pipe
side
Gas pipe
side
Strainer Electron
expansion
valve
Strainer
Capillary
Accumlator
Compressor
Liquid pipe:1/4" (6mm)
Gas pipe:3/8" (9.52mm)

9
Technical Information
Service Manual
5. Electrical Part
5.1 Wiring Diagram
● Indoor Unit
● Instruction
Symbol Symbol Color Symbol Symbol Color Symbol Name
WH White GN Green CAP Jumper cap
YE Yellow BN Brown COMP Compressor
RD Red BU Blue Grounding wire
YEGN Yellow/Green BK Black / /
VT Violet OG Orange / /
Note: Jumper cap is used to determine fan speed and the swing angle of horizontal lover for this model.
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10 Technical Information
Service Manual
● Outdoor Unit
These circuit diagrams are subject to change without notice, please refer to the one supplied with the unit.
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11
Technical Information
Service Manual
1
2
3
4
5
7
6
8
9
10
11
12 13 14 15 16 17 18
19
20
21
22
5.2 PCB Printed Diagram
Main Board for Indoor Unit
● Top view
● Bottom view
NO Name
1DC motor
2High-pressure generator
3Charged module
4Left upper gate plate motor
5Right upper gate plate motor
6Protective tube
7Up and down swing motor
8Left lower gate plate motor
9Right lower gate plate motor
10 Needle stand for connecting display
board
11 Needle stand of temperature sensor
12 Photoelectric switch 2
13 Photoelectric switch 1
14 Terminal of live wire
15 Terminal of live wire for ODU
16 Zero line control terminal for electric
heater
17 Terminal for communication with ODU
18 Needle stand for inching switch
19 Zero line input terminal for electric
heater
20 Live wire control terminal for electric
heater
21 Protective tube for electric heater
22 Live wire input terminal for electric
heater

12 Technical Information
Service Manual
Display Board
Display modules
Left and right swing motor
1Left and right swing motor 2
Needle stand for connecting mainboard
Electric heating belt Electric heating belt
Checkout console
(WIFI radio frequency,
humidity detection)
Conductive membranes
● Top view

13
Technical Information
Service Manual
● Bottom view

14 Technical Information
Service Manual
● Top view
Main Board for Outdoor Unit
● Bottom view
No Name No Name No Name
13-phase line for compressor 5DC fan unit 9Ground lead
2Needle stand for overcurrent line of
compressor 6Needle stand of 2-way valve 10 Neutral wire
3Needle stand for temperature sensor 7Needle stand of 4-way
valve
/ /
4Needle stand for electronic expansion
valve 8Live wire / /
1
2 3 4 5 6 7
8
9
10

15
Technical Information
Service Manual
6. Function and Control
6.1 Function Buttons and Displayer
Display
Slide Bar
Button
NOTE: This series adopts concealed touch buttons. Touch buttons slightly when buttons are displayed.
Under de-energization status, all buttons are OFF, except ON/OFF button. Touch ON/
OFF button slightly to turn on the unit directly; touch any other buttons and all buttons will
be ON. After turning on the unit, all button except ON/OFF button and other display icons
are controlled by light button on remote controller. When turning off the light, if touch
any button except ON/OFF switch, all buttons are display. After buttons are concealed,
touch button zone and all buttons will be displayed. You can perform the corresponding
operation when buttons are displayed. If there's no operation for any buttons, buttons will
be concealed after 10s.
1. ON/OFF button
●Press this button can turn on or turn off the air conditioner. When turning on or
turning off the air conditioner,original timer and sleep function will be cleared.
●Under energization status, indicator " " is ON.
Note:
Under x-fan operation period, press ON/OFF button to turn on the unit directly.
2. Up&down swing button
Press this button to turn on or turn off up&down swing.
3. Left&right swing button
Press this button to turn on or turn off left&right swing.
4. Heat button
Press this button can turn on the heating mode.
5. Cool button
Press this button turn on the cooling mode.
7. Function button
●Under unit on status, press Function button to switch function in the sequence of auto,
dry, fan, eco fan, setting, room temp., timer. When the function icon is blinking, it means
this function can be set through slide bar button. If there is no operation within
5s after nishing setting, the setting will be conrmed. The setting can be conrmed also
by pressing Function button.
●Under unit off status, press Function button to set timer.When the timer icon is blinking, touch slide bar to set timer. If there is no
operation within 5s after nishing setting, the setting will be conrmed. The setting can be conrmed also by pressing Function button.
Note:
After the function is selected by Function button, if the unit is not turned off and there is no remote signal, the function will circulate
from last selected function when pressing the Function button within 2min; the function will circulate from the rst function icon when
pressing the Function button after 2min or turn off the unit or there is remote signal.
8. Puty button
Press this button can turn on or turn off Puty function.
6. Speed button
Press Speed button to change the fan speed as below:
Note:
Quiet and turbo function are set by Speed button. Quiet and turbo function are not
available in dry, fan and auto mode. Quiet function is not available in heating mode.
The fan speed is low in dry and auto dry mode. The fan speed is not adjustable and fan
speed button is invalid.
23
45
67
81
Button Display
Auto Quiet Low Medium-low
Medium
Medium-highHighTurbo

16 Technical Information
Service Manual
●When the unit is not in function setting while in unit on status, touch the slide bar to make it slide
from left to right to increase set temperature; touch the slide bar to make it slide from tight to left to
decrease set temperature; temperature setting range is 16oC~ 30oC (The slide bar is not available for
setting temperature under auto and E-joy modes).
●Under function setting status, press function button to select the function. That function’s characterwill ash and then conrm or cancel it.
(1) Timer: Set timer and adjust the time within 0.5~25h. When set timer t hrough control panel, the time will change every 0.5h.
(2) Eco-wind: turn on or turn off eco-wind function.
(3) Set: Set temperature display on or off.
(4) Room temp.: Room temperature display on or off.
●Pressing " " and " " button at the same time for 3s, all button functions on the displayer are shielded. When pressing any button, the
buzzer will give out a sound and "LC" will blink on the nixietube for three times to remind user that the buttons are locked and then resume
normal display. Press these two buttons at the same time for 3s again to cancel shielding function and then the display resumes normal
status.
Slide Bar
Function Buttons and Displayer (Display)
1. Set
Display set temperature.
2. Room Temp
Display indoor ambient temperature.
3. Defrost
When defrost icon is bright, it means the unit is in defrosting.
4. Fan
Display fan speed with fan speed icon in dynamic display. When
the arrow icon is in setting fan speed, the arrows corresponding
to the fan speed is all bright. When fan speed has been set, the
arrows display dynamically and circularly with increasing one
arrow every 0.5 second.
5. Up&down Swing
Display up and down swing status.
6. Display left and right swing status.
Display indoor ambient temperature.
7. E-heater Function
When this icon is bright, it means E-heater function is activated.
8. Timer Function
When this icon is bright, it means timer function is activated.
9. Eco-wind Function
When this icon is bright, it means eco-wind function is activated.
10. Purify Function
When this icon is bright, it means purify function is set.
11. Auto Function
When this icon is bright, it means auto mode is set.
12. Fan Function
When this icon is bright, it means fan mode is set.
13. Dry Function
When this icon is bright, it means dry mode is set.
14. Heat Function
When this icon is bright, it means heat mode is set.
15. Cool Function
When this icon is bright, it means cool mode is set.
16. WiFi Function
When this icon is bright, it means WiFi function is activated.
Auto
:
Quiet
:
Low
:
Medium low:
Medium:
Medium high:
High:
Turbo:

17
Technical Information
Service Manual
6.2 Remote Controller Introduction
1
2
3
5
7
12
11
13
15
16
4
6
8
9
10
14
17
18
1ON/OFF button 11
12
13
14
15
16
17
Turbo button
2+/- button Quiet button
Purify button
X-Fan/E-heater butto
n
Fan button
3Cool button
4Heat button
18 Timer button
9Mode button
10
Wifi button7button
Sleep button
5Eco-wind button
8button
Light button
6E-joy button
Buttons on Remote Controller
Introduction for Icons on Display Screen
Introduction for Buttons on Remote Controller
OPER Purify
MusicReminder
E-joy
Cold Cool Comfort Warm
Hour
Eco-wind
X-fan
E-heater
OFF
Turbo
Quiet
Sleep
ONOFF
Hot
Fan Auto
Set fan speed
Electricity of battery
Purify mode
Child lock
Set temperature
Up & down swing
Left & right swing
Send signal
: Auto mode
: Cool mode
: Dry mode
: Fan mode
: Heat mode
Operation mode
E-joy mode
Timer function
All kinds of
function status
°F
The remote controller adopts radio-frequency technology. It can be operated only after matching successfully with air
conditioner. The matching method is as below:
After energization, press X-Fan/E-heater button for more than 3s within 2m from the air conditioner, and remote controller and air
conditioner will enter into matching status automatically. After matching is succeeded, air conditioner will give out three sound. If matching
is unsuccessful, please close to air conditioner and perform the matching again. If the remote controller is invalid, please press that button
again to perform matching to eliminate the malfunction between remote controller and air conditioner.
Note:
● This is a general use remote controller, it could be used for the air conditioners with multifunction; For some function, which the model
doesn't have, if press the corresponding button on the remote controller that the unit will keep the original running status.
● Do not throw or drop the remote controller; Do not let any liquid get into remote controller; Do not put the remote controller at overheating
position or the place with direct sunlight.
● This remote controller is the universal one, which can be applicable for different types of air conditioner. The functions which are not
applicable for this air conditioner are not introduced as below.