Gree GDN40AU-K3EBA1A User manual
Service Manual
GREE ELECTRIC APPLIANCES,INC.OF ZHUHAI
Change for Life
Service Manual
Models: GDN40AU-K3EBA1A
GDN40AW-K3EBA1A
(Refrigerant:R410A)
Service Manual
Table of Contents
Table of Contents
Part Ė: Technical Information............................................................ 1
1.Summary...................................................................................................... 1
6SHFL¿FDWLRQV ........................................................................................... 2
3.Outline Dimension Diagram.............................................................. 3
4.Refrigerant System Diagram ............................................................ 4
5.Electrical Part............................................................................................ 5
5.1 Wiring Diagram ........................................................................................... 5
5.2 PCB Printed Diagram.................................................................................. 7
6.Function and Control.......................................................................... 10
Part ė: Maintenance ............................................................................ 14
7.Notes Maintenance .............................................................................. 14
8.Maintenance............................................................................................. 16
9.Exploded View and Parts List ........................................................ 21
10. Removal Procedure ......................................................................... 27
Appendix:...................................................................................................... 43
Appendix 1: Reference Sheet of Celsius and Fahrenheit ............................... 43
Appendix 2: Resistance Table of Temperature Sensor ................................... 44
Appendix 3: Resistance Value Table of Humidity Sensor ............................... 47
1
Technical Information
Service Manual
GDN40AU-K3EBA1A
GDN40AW-K3EBA1A
1.Summary
Part Ė: Technical Information
2Technical Information
Service Manual
6SHFL¿FDWLRQV
Model GDN40AU-K3EBA1A GDN40AW-K3EBA1A
Product Code CK051024400 CK051024500
Power
Supply
Rated Voltage V Њ220-240 220-240
Rated Frequency Hz 50 50
Phases 1 1
5DWHG'HKXPLGL¿FDWLRQ&DSDFLW\ Pint/D 50 51
Power Input W 570 570
Current Input A 2.65 2.65
Set Humidity Range % 30/80 30/80
Air Flow Volume (H/M/L) m3/h 230/195/170 230/195/170
Fan Motor Speed (H/M/L) r/min 1260/1070/900 1260/1070/900
Fan Motor Power Output W 20 20
Fan Motor RLA A 0.35 0.35
Fan Motor Capacitor ȝ) 22
Fan Type Centrifugal Centrifugal
Fan Diameter Length (DXL) mm ĭ; ĭ;
Throttling Method Capillary Capillary
Fuse Current A 3.15 3.15
Sound Pressure Level (H/M/L) dB (A) 46/43/40 46/43/41
Sound Power Level (H/M/L) dB (A) 56/53/50 56/53/51
Climate Type T1 T1
Isolation I I
Moisture Protection IPX0 IPX0
Permissible Excessive Operating Pressure for the
Discharge Side MPa 4.3 4.3
Permissible Excessive Operating Pressure for the
Suction Side MPa 2.5 2.5
Dimension (WXHXD) mm 390X628X286 396X625X286
Dimension of Carton Box (LXWXH) mm 348X461X655 448X338X638
Dimension of Package (LXWXH) mm 351X464X670 451X341X653
Application Area m248 48
Net Weight kg 22 23
Gross Weight kg 23.5 24.5
Refrigerant R410A R410A
Refrigerant Charge kg 0.31 0.31
Bucket Capacity L 6.5/7 6.5/7
Control Type Electronic Electronic
Evaporator
Evaporator Form Aluminum Fin-copper Tube Aluminum Fin-copper Tube
Evaporator Pipe Diameter mm ĭ ĭ
(YDSRUDWRU5RZ¿Q*DS mm 2-1.4 2-1.4
Evaporator Coil Length (LXDXW) mm 261X228.6X25.4 261X228.6X25.4
Condenser
Condenser Form Aluminum Fin-copper Tube Aluminum Fin-copper Tube
Condenser Pipe Diameter mm ĭ ĭ
&RQGHQVHU5RZV¿Q*DS mm 3-1.4 3-1.4
Condenser Coil Length (LXDXW) mm 261X228.6X38.1 261X228.6X25.4
Compressor
Compressor Manufacturer ZHUHAI LANDA COMPRESSOR
CO., LTD.
ZHUHAI LANDA COMPRESSOR
CO., LTD.
Compressor Model QXA-A071L130C QXA-A071L130C
Compressor Type Rotary Rotary
Compressor Power Input W 630 630
Compressor Overload Protector UP3-B0 UP3-B0
Compressor Oil RB68EP RB68EP
Compressor LRA. A 15 15
Compressor RLA A 2.9 2.9
The above data is subject to change without notice; please refer to the nameplate of the unit.
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3
Technical Information
Service Manual
3.Outline Dimension Diagram
Unit:mm
Unit:mm
GDN40AU-K3EBA1A
GDN40AW-K3EBA1A
4Technical Information
Service Manual
4.Refrigerant System Diagram
air in
evaporator
capillary
condenser
fan motor
air out
compressor
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dehumidifying the air by using this principle.
During operation of the system, air will pass through evaporator and condenser in turn and then be discharged due to centrifugal
blade. When the air is passing through evaporator, refrigerant will absorb the heat in air to let its temperature decrease to the
temperature point of dew, water vapor in air will condensate. Condensate water comes into water tank through water tray, or is
discharged directly through drainage hose. The saturated low-temperature air passed through the evaporator will absorb the heat
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RSHUDWLRQRIGHKXPLGL¿HU
5
Technical Information
Service Manual
5.Electrical Part
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 / /
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These wiring diagrams are subject to change without notice; please refer to the one supplied with the unit.
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7
Technical Information
Service Manual
12 3 4 5
6
7
8109
Silk Screen on Main Board
5.2 PCB Printed Diagram
ƔTop view
ƔBottom view
No. Name
1 Fuse
2Interface of display
board
3Compressor interface
without overcurrent
4Compressor interface
withovercurrent
5 Current mutual-inductor
6 Fan interface
7 Connect neutral wire
8 Piezoresistor
9Drive relay of
compressor
10 High-frequency
transformer
8Technical Information
Service Manual
1
2
34 567
Silk Screen on Display Board
ƔTop view
ƔBottom view
No. Name
1 Interface of main board
2 Interface of stepping motor
3 Interface of temperature sensor
4 Reserved interface of discharge temperature sensor
5 Nixie tube
6 Interface of inspection board for temperature and environment
7 Water-level inspection port
GDN40AU-K3EBA1AGDN40AU-K3EBA1A
9
Technical Information
Service Manual
1
23 546
ƔTop view
ƔBottom view
GDN40AW-K3EBA1AGDN40AW-K3EBA1A
No. Name
1 Boards connection interface for connection board
2 Interface of stepping motor
3 Interface of tube temperature sensor
4 Nixie tube
5 Interface of temperature and humidity sensor
6 Water level inspection interface
10 Technical Information
Service Manual
6.Function and Control
12345
Speed Indicator
Filter Cleaning
Indicator
Dehumidify mode indicator Bucket Full Indicator
Display Window
5T5LL
Indicator
Timer Indicator
Filter
Clean ON/OFF
ON/OFF
Smart Cont Dry Timer ON/OFF
High Med Low Water
Full
Fan Mode
Humidity
Timer
Notes:1.Water bucker must be correctly installed for operation.
2.Do not remove the bucket while unit is in operation.
3.If you want to use drain hose to drain water away, please install the hose according to section "Drainage method".
4.Each time pressing the effective button on the control panel will give out a "beep" sound.
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simultaneously.
6.1 Control panel instruction
(1) ON/OFF Button
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(2) Timer Button
Press Timer button to set timer on or timer off. The timer can be set in 1h increment among 0-24h with each press of Timer button.
If hold the Timer button, time will increase rapidly circularly. After timer is set, time will be displayed for 5s and timer indicator will be on.
(3) Humidity Button
Press Humidity button to set your required humidity. If hold Humiditybutton, humidity can be set in 10% increment among 30%-80%
circularly. After that, the set humidity will be displayed for 5s.
(4) Mode Button
Press Mode button can set 3 kinds of dehumidify mode - Smart, Cont, and Dry.
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human according to current temperature.
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humidity is decreased to the inapplicable humidity of human.
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Note:
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stop dehumidifying.
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(5) FAN Button
Pressing this button can set fan speed circularly as: High, Medium, Low. Corresponding indicator will be on for each fan speed.
Under Auto mode, this button will be disabled.
GDN40AU-K3EBA1A
11
Technical Information
Service Manual
123456
Speed Indicator
Timer Indicator
Filter Cleaning
Indicator
Dehumidify Mode
Indicator
Bucket Full
Indicator
Display Window
Wind Direction Indicator
FanMode
Wind
Direc
Humidity Timer
High Med LowTimer ON/OFFSmart Cont Quiet DryWater Full Swing Fixed
Angle
Filter Clean
Notes:1.Water bucker must be correctly installed for operation.
2.Do not remove the bucket while unit is in operation.
3.If you want to use drain hose to drain water away, please install the hose according to section "Drainage method".
4.Each time pressing the effective button on the control panel will give out a "beep" sound.
simultaneously.
(1) ON/OFF Button
(2) Fan Button
Press Fan button can set high, medium or low fan speed. When thecorresponding indicator is on, it indicates the current fan speed
has been set.
(3) Timer Button
Press Timer button to set timer on or timer off. The timer can be set in 1h increment among 0-24h with each press of Timer button.
If hold the Timer button, time will increase rapidly circularly. After timer is set, time will be displayed for 5s and timer indicator ill be on.
(4) Humidity Button
Press Humidity button to set your required humidity. If hold Humidity button, humidity can be set in 10% increment among
30%-80% circularly. After that, the set humidity will be displayed for 5s.
(5) Mode Button
Press Mode button can set 4 kinds of dehumidify mode - Smart, Cont, Quiet and Dry.
●If smart indicator is on, it indicates the unit enters into smart mode. The unit will intelligently select the comfortable humidity for
human according to current temperature.
●If cont indicator is on, it indicates the unit enter into continuous dehumidify mode. The unit will always dehumidify only until the
humidity is decreased to the inapplicable humidity of human.
●If the quiet indicator is on, the unit enter into quiet mode.The unit will intelligently select the comfortable humidity for human
according to current temperature. The unit will operate at the fan speed whose noise is the lowest. The fan speed can't be adjusted.
●If the dry indicator is on, the unit enters into dry mode. After clothes are dried, room humidity will be kept at certain range to
prevent mildew. Under dry mode, fan speed and humidity can't be adjusted.
Note:
●Under smart mode and quiet mode, if room humidity is lower than set humidity, or lower than the defaulted comfortable temperature,
the unit will stop dehumidifying.
●Under dry mode and cont mode, the humidity can't be adjusted. Under dry mode and quiet mode, fan speed can't be adjusted.
(5) Wind Direc Button
indicator is on, the horizontal louver begins to swing; when Fixed Angle light is on, the horizontal louver stays at current position.
GDN40AW-K3EBA1A
12 Technical Information
Service Manual
6.2 Introduction of Basic Mode Function
Ė. Basic function
1. Smart dehumidify
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time,
DQG7DPEđ, the set humidity is 60%; when 20đ7DPEđ, the set humidity is 50%; when Tamb.>27đ, the set
humidity is 40%. Afterwards, if user adjusts the humidity, the unit will operate at the humidity set by user.
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speed;
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F$PELHQWKXPLGLW\VHWKXPLGLW\DPELHQWKXPLGLW\FRPSUHVVRUVWD\VDWRSHUDWLRQVWDWXVDQGLWZLOORSHUDWH
according to condition “a”; when compressor stays at stop status, and it will operate according to condition “b”; If it’s this
condition when turning on the unit, compressor will stay at stop status and the fan will delay 3min to stop operation.
2. Continuous dehumidify
Under continuous dehumidify status, the complete unit will operate according to below mode. The humidity button is
invalid.
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c. When 20%<ambient humidity<30%, compressor stays at operation status and it operates at condition “a”; when
compressor stays at stop status, and it will operate according to condition “b”; If it’s this condition when turning on the unit,
compressor will stay at stop status and the fan operates at set fan speed.
3. Clothes-drying mode
After entering into clothes-drying mode, compressor is turned on and the fan operates at high fan speed. Humidity and fan
speed buttons are invalid. Fan speed won’t be displayed. When the complete unit operates for above 8 hours under
clothes-drying mode (when there’s malfunction for temperature sensor or humidity sensor, stop 8hours for time count; time
will
be counted after eliminating malfunction) or stops operation for protection after reaching to temperature point, the unit will
operate as below:
Set humidity is 50%, which can’t be adjusted. The complete unit operates according to below mode:
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3mins
and then stop operation;
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condition “a”; when compressor stays at stop status, and it will operate according to condition “b”; If it’s this condition when
turning on the unit, compressor will stay at stop status, and the fan will operate at high fan speed for 3min and then stop
operation.
When turning on the unit again or switch to clothes-drying mode again, the unit will operate under clothes-drying mode
again.
4. Dehumidify under quiet mode
The fan operates at low fan speed and the fan speed is invalid. Fan speed won’t be displayed. The other operation
condition is
same as that for smart dehumidify. Under quiet mode, when Tamb.>34đ, it operates as below: ŚCompressor stops
operation; śHorizontal louver opens. When 32đ7DPEđFRPSUHVVRUNHHSVSUHYLRXVVWDWXV:KHQ7DPEđ,
compressor operates normally.
ė. Protection function
1. Compressor protection
After energization, if compressor stops operation under any circumstances, it can be started up after 3min at the least.
Under
operation status, except where’s malfunction for temperature sensor, turn off the unit by pressing ON/OFF button, water
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2. Temperature sensor malfunction inspection
When there’s malfunction for ambient humidity sensor, the compressor and the fan stop operation. LED is off, button is
invalid
and nixie tube displays “L1/F1”. When two sensors all have malfunction, nixie tube will display “F1, L1, F2” alternatively to
remind user to repair it.
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stop operation, and fan will also stop operation after delaying for 3min. The buzzer will give out sound will 10s and water
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13
Technical Information
Service Manual
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will stop giving out sound. The fan will operate at set fan speed and compressor will resume operation after 3min.
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The compressor and the fan can’t be started up. All buttons are invalid.
4. Freeze prevention protection
During operation process, when it detected that there’s freeze prevention protection, the compressor stops operation and then
fan operates at high fan speed; when it detected that freeze prevention protection is over, fan speed button is available. The
fan will operate at set status, and the compressor be started up again 3min later.
Ę. Other function
1. Buttons on panel
ON/OFF button: used for turn on or turn off the unit.
Timer button: used for timer setting (0-24h); If press Timer button for 1s, timer setting will increase 1h every 400MS.
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1s above, humidity will increase 10%RH every 400MS.
Mode buttonφuse for setting dehumidify mode (smart, continuous, quiet, clothes-drying).
Speed button: used for setting fan speed δhigh, medium, low).
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2. LED display
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continues, clothes-drying);
Speed indicator: display current fan speed (high, medium, low) (fan speed won’t be displayed under quiet or clothes-drying
mode);
Timer indicator: this indicator is ON when timer function is set; this indicator is OFF when there’s no timer setting.
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:DWHURYHUÀRZLQGLFDWRUWKLVLQGLFDWRUZLOOEHRQZKHQZDWHURYHUÀRZSURWHFWLRQRFFXUV
“Standby/Operation” indicator: this indicator is in red under standby status; this indicator is in white when the unit is turned on.
(GDN40AW-K3EBA1A)
Mode indicator: display current operation mode (smart, continuous, quiet, clothes-drying);
Speed indicator: display current fan speed (high, medium, low) (fan speed won’t be displayed under quiet or clothes-drying mode);
Timer indicator: this indicator is ON when timer function is set; this indicator is OFF when there’s no timer setting
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“Standby/Operation” indicator: this indicator is in red under standby status; this indicator is in white when the unit is turned on.
3. Timer control
Timer can be set in the range of 0~24h. Set timer OFF under on status; set timer on under off status.
4.Nixie tube display
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5s, it will resume current ambient humidity;
Ambient humidity display range is 1%~99%. If exceeds 99%, it displays 99%. Within 15s after turning on the unit, set humidity
is displayed under smart or quiet mode; 50% is display under clothes-drying or continuous mode; 15s later, it will display
current ambient humidity. Current ambient humidity value will be updated every 5s.
b. If there’s malfunction for sensor or temperature/humidity sensor, or there’s malfunction due to protection under any
circumstances, nixie tube will display “F1”, “F2” OR “L1” , “E5” ,”H3”, “F0”. Timer indicator, button backlight button, mode
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c. E5 is displayed for overcurrent protection; E3 is displayed for overload protection; F0 is displayed for Freon-lacking
protection; EE is displayed for welding blockage inspection display; No display for compressor protection and freeze prevention
protection.
d. When there are multiple malfunctions, error codes will displayed alternatively every 3s.
5. Filter alarm function
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record once every 30min.
6.Buzzer
After energization or received valid button signal, there will be a sound.
7. Ex-factory defaulted setting
Ex-factory defaulted setting
Speed: high fan speed
Mode: smart dehumidify
14 Maintenance
Service Manual
Part ė: Maintenance
7.Notes Maintenance
Electrical Safety Precautions:
Safety Precautions:
Important!
Please read the safety precautions carefully before
maintenanc
The following contents are very important for
installation and maintenance.
Please follow the instructions below.
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electrical codes.
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manual.
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operation to prevent electric shock and other
accidents.
1. Cut off the power supply before maintenance.
2. Specialized circuit must be applied; prohibit sharing
the same circuit with other electric appliances;
protection switch must be installed.
3.Have the unit adequately grounded. The grounding
wire can’t be used for other purposes.
4. The live wire, neutral wire and grounding wire of pow-
er supply must be corresponding to the live wire, neutral
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5. The power cord can’t be pressed by hard objects.
6. If the power cord or connection wire is not long
enough, please get the specialized power cord or con-
nection wire from the manufacture or distributor. Prohibit
prolong the wire by yourself.
5HSODFHWKHIXVHZLWKDQHZRQHRIWKHVDPHVSHFL¿FD-
tion if it is burnt down; don’t replace it with a cooper wire
or conducting wire.
8. Use the power supply with same voltage and frequen-
cy as shown in rating label.
9. Do not pull out the power plug when the unit is operat-
ing to avoid damaging the circuit.
'RQRWSODFHDQ\WKLQJDWWKHWRSRIGHKXPLGL¿HUHQ-
sure the air outlet or air inlet is not blocked; do not use
the unit near wall and curtain.
11. Do not use heating equipment around the unit.
1. Avoid contact between refrigerant and fire as it
generates poisonous gas. Recycle the refrigerant
inside the unit completely before welding pipes.
2. Apply specified 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.If refrigerant is leaking seriously, it may cause
suffocation or explosion. When using the combustible
refrigerant, please put the unit at ventilated place.
4. Never touch the refrigerant piping or compressor
without wearing glove to avoid scald or frostbite.
Warnings
Refrigerant Safety Precautions:
,PSURSHULQVWDOODWLRQPD\OHDGWR¿UHKD]DUGH[SORVLRQ
electric shock or injury.
15
Maintenance
Service Manual
Main Tools for Maintenance
5. Vacuum pump
7. Universal meter
4. Electronic leakage detector
1. Electroprobe 2. Screw driver
6. Pressure meter
8. Soldering appliance, refrigerant container
3. Open-end wrench, inner hexagon spanner
16 Maintenance
Service Manual
No. Malfunction
Name Nixie tube display Unit status Possible Causes
1
Malfunction of
ambient temp.
sensor
F1
The compressor, fan
and water pump stop;
buttons are invalid
1. The wiring terminal between ambient temperature
sensor and main board is loosened or poorly
contacted;
2. There’s short circuit due to trip-over of the parts on
controller;
3. Ambient temperature sensor is damaged (Please
check it by referring to the resistance table for
temperature sensor);
4. Main board is broken.
2
Malfunction
of tube temp.
sensor
F2
1. The wiring terminal between evaporator temperature
sensor and main board is loosened or poorly
contacted;
2. There’s short circuit due to the trip-over of the parts
on controller;
3. Evaporator temperature sensor is damaged
(Please check it by referring to the resistance table for
temperature sensor);
4. Main board is broken.
3
Malfunction
of humidity
sensor
L1
1. Humidity sensor is short-circuit;
2. Humidity sensor is broken;
3. Display board is broken.
4
Freon-lacking
protection
F0 The compressor
stops;the fan motor
keeps onrunning.
1.Refrigerant is leaking.
2.System is blocked.
5
Overload
protection
H3
1.Ambient operation condition is bad.
7KHHYDSRUDWRUDQGFRQGHQVHUDUHEORFNHGZLWK¿OWK
3.The system is abnormal.
8.Maintenance
8.1 Error code
17
Maintenance
Service Manual
Start
Insert the temperature
sensor tightly
yes
Malfunction 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
yes
Malfunction is
removed.
no
yes
yes
no
Is the wiring
terminal between temperature
sensor and the controller loosened or
poorly contacted?
Is there short circuit due to trip over
of the par ts?
Is the temperature
sensor normal according to the
Resistance Table?
Replace it with a
temperature sensor
of the same model
1. Malfunction of temperature sensor F1, F2
8.2 Malfunction Detection Flowchart
18 Maintenance
Service Manual
2. Malfunction of humidity sensor L1
Trouble shooting for malfunction
of humidity sensor
Humidity sensor is not
connected well with mainboard yes
yes
yes
yes
yes
yes
no
no
no
no
no
no
End
check the connection
Is malfunction
eliminated?
Is malfunction
Is malfunction
eliminated?
eliminated?
Replace the display board
with the same model
Replace the humidity
sensor board
Is the humidity
sensor normal according to the
Resistance Table?
Eliminate short
circuit phenomenon
The foot of humidity sensor
is short-circuit or the display board
is short circuit
This manual suits for next models
1
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