Gree GDN12AJ-K4EBC1A, GDN16AJ-K4EBC1A, GDN12AJ-K4EBC1B Service Manual
Service Manual
Change for Life
Service Manual
Models: GDN12AJ-K4EBC1A
GDN12AJ-K4EBC1B
GDN16AJ-K4EBC1A
(Refrigerant R134a)
GREE ELECTRIC APPLIANCES,INC.OF ZHUHAI
Table of Contents
Service Manual
Part
1. Summary
2. Specications
: Technical Information
Ⅰ
.................................................................................................... 1
.......................................................................................... 2
3. Outline Dimension Diagram
4. Refrigerant System Diagram
5. Electrical Part
5.1 Wiring Diagram ........................................................................................... 5
5.2 PCB Printed Diagram .................................................................................. 6
6. Function and Control
6.1 Control Panel Instruction ............................................................................. 8
6.2 Introduction of Basic Mode Function ........................................................... 9
Part
: Maintenance
Ⅱ
7. Notes Maintenance
........................................................................................... 5
........................................................................... 8
............................................................................ 11
............................................................................. 11
............................................................ 1
............................................................. 3
........................................................... 4
8. Maintenance
8.1 Error Code ................................................................................................. 12
8.2 Malfunction Detection Flowchart ............................................................... 13
8.3 Maintenance Method for Common Malfunction ........................................ 14
9. Exploded View and Parts List
10. Removal Procedure
Appendix:
Appendix 1: Reference Sheet of Celsius and Fahrenheit ............................... 25
Appendix 2: Resistance Table of Temperature Sensor ................................... 26
Appendix 3: Resistance Value Table of Humidity Sensor ............................... 29
...................................................................................................... 25
........................................................................................... 12
....................................................... 16
......................................................................... 20
Table of Contents
Service Manual
Part
: Technical Information
Ⅰ
1.Summary
Models：
GDN12AJ-K4EBC1A
GDN16AJ-K4EBC1A
GDN12AJ-K4EBC1B
Technical Information
1
2.Specications
Service Manual
Model
Product Code
Rated Voltage V~ 220-240 220-240
Power Supply
Rated Dehumidifying Volume L/h 0.23 0.4
Power Input W 230 295
Power Current A 1.3 1.3
Set Humidity Range % 35~80 35~80
Air Flow Volume(H/M/L) m
Fan Motor Speed (H/M/L) r/min 1100/-/950 1100/-/950
Output of Fan Motor W 4 4
Fan Motor Capacitor μF 1.5 1.5
Fan Type Centrifugal Centrifugal
Diameter Length(DXL) mm Φ180X54.5 Φ180X54.5
Throttling Method Capillary Capillary
Fuse A 3.15 3.15
Sound Pressure Level (H/M/L) dB (A) 43/-/41 45/-/43
Sound Power Level ((H/M/L) dB (A) 53/-/51 53/-/51
Climate Type T1 T1
Isolation I I
Moisture Protection IPX0 IPX0
Permissible Excessive Operating Pressure for the
Discharge Side
Permissible Excessive Operating Pressure for the
Suction Side
Dimension (WXHXD) mm 353X496X225 353X496X225
Dimension of Carton Box (LXWXH) mm 393X271X510 393X271X510
Dimension of Package (LXWXH) mm 396X274X525 396X274X525
Application Area m
Net Weight kg 11 13.5
Gross Weight kg 12 14.5
Refrigerant R134a R134a
Refrigerant Charge kg 0.09 0.17
Bucket Capacity L 3/3.5 3/3.5
Control Type Electronic Electronic
Evaporator
Condenser
Compressor
Rated Frequency Hz 50 50
Phases 1 1
3
/h 115/-/100 115/-/100
MPa 3 3
MPa 1.8 1.8
2
Form Aluminum Fin-copper Tube Aluminum Fin-copper Tube
Pipe Diameter mm Φ7 Φ7
Row-n Gap mm 1-1.4 2-1.6
Coil Length (LXDXW) mm 210X12.7X152.4 210X25.4X152.4
Form Aluminum Fin-copper Tube Aluminum Fin-copper Tube
Pipe Diameter mm Φ5 Φ7
Rows-n Gap mm 2-1.4 2-1.4
Coil Length (LXDXW) mm 210X22.8X152.4 210X25.4X152.4
Compressor Manufacturer/Trademark
Model BSA418CV-R1AUN 39E0G3HR&F^YA
Type Rotary Rotary
Power Input W 213 265
Overload Protector URP-191-78 or equivalent UP3-106
L.R.A. A 3.4 5.5
Working Current A 1.1 1.2
1.GDN12AJ-K4EBC1A
2.GDN12AJ-K4EBC1B
1.CK051012901/CK051012902
2.CK051019102
15 20
Shanghai Hitachi Electrical
Appliances Co.,Ltd/HIGHLY
GDN16AJ-K4EBC1A
CK051013001
CK051013003
Shanghai Hitachi Electrical
Appliances Co.,Ltd/HIGHLY
The above data is subject to change without notice; please refer to the nameplate of the unit.
2
Technical Information
Service Manual
496
3.Outline Dimension Diagram
225
353
Unit:mm
Technical Information
3
4.Refrigerant System Diagram
evaporator
capillary
condenser
Service Manual
air in
air out
fan motor
compressor
Dehumidifying principle of dehumidier:
When temperature is decreased to the temperature point of dew, water vapor in humid air will condensate. Dehumidier is
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
when owing along the condenser, and then become the dry air. Under normal condition, the nearby air will become warm during
operation of dehumidier.
4
Technical Information
Service Manual
5.Electrical Part
5.1 Wiring Diagram
●Instruction
Symbol Symbol Color Symbol Symbol Color Symbol Name
WH White GN Green COMP Compressor
YE Yellow BN Brown Grounding wire
RD Red BU Blue / /
YEGN Yellow/Green BK Black / /
VT Violet OG Orange / /
TUBE TEMP.SENSOR
TUBE
AP2
CN4
RT1
CN1
CN1
CN2
AP1
AC-L
COMP
CN3
K1
N
FAN MOTOR
C1
BN(BK)
BU(WH)
M1
L
N
YEGN
PE
POWER
N1
RD
BN
ST
BU
HUMIDITY
SENSOR
COM
LIQUID LEVEL
These circuit diagrames are subject to change without notice ,please refer to the one supplied with the unit.
NO
SA
SWITCH
C2
YE
BU
BU
R(M)
COMP.
S
YEGN(GN)
C
YEGN
PE
PE
63610000213
Technical Information
5
5.2 PCB Printed Diagram
Silk Screen on Main Board
● Top view
Service Manual
16
2
5
4
3
No. Name Description No. Name Description
Needle stand of board
1
connection wire
2 Needle stand of fan Connect to fan 5 Interface of compressor Connect to compressor
3 Interface of live wire
Connect to display board 4 Interface of neutral wire
Connect to live wire of
commercial wire
Needle stand of water
6
blow protection switch
● Bottom view
Connect to neutral wire
of commercial wire
Connect to water blow
protection switch
6
Technical Information
Service Manual
Silk Screen on Display Board
● Top view
11121314171516
18
19
20
12345
1Timer button 8 Indicator of dehumidifying continuously15Indicator of high fan speed
2 Buzzer 9
Connection between humidity sensor
(needle stand)
16 Button for setting humidity (+)
10
9
8
7
6
3 Fan speed button 10 Power indicator Indicator of mid fan speed17
4 ON/OFF button 11 Button for setting humidity (-) 18
5 12 Indicator for bucket full protection 19 4H timer indicator
Alarming indicator for
6
7 Wire connection 14 Indicator for low fan speed
13 Dual-8 nixie tube 20 2H timer indicator
Needle stand for tube
temperature sensor
● Bottom view
Technical Information
7
6.Function and Control
3
1
Continuous operation on
4 hour or 2 hour
indicator lights
delay on/o
6.1 Control Panel Instruction
High and Low fan
indicator lights
Service Manual
4
Bucket full light indicates
bucket needs to be emptied
or it is not in the proper place
ff
Power On
indicator light
1.ON/OFF Pad
Press to turn the dehumidier on or off.
6
5
2
indicator light
Clean the Filter
indicator light
2.FILTER Pad
After 250 hours of operation, the Clean the Filter indicator light will glow to remind you to clean the lter. Remove the lter and
clean it. Press to turn off the Clean the Filter light. See the Care and Cleaning section.
3.Humidity Set Control Pads
The humidity level can be set within a range of 80% RH (Relative Humidity) to 35% RH (Relative Humidity) in 5% reduce or at
CO for continuous operation.
NOTE: If CO (Continuous) is selected, the dehumidier will operate continuously at its maximum dehumidication settings if
attached to a hose to drain or until the bucket is full.
For drier air, press the - pad and set to a lower percent value (%).
For damper air, press the + pad and set to a higher percent value (%).
When you first use the dehumidifier, set the humidity control to 45% or 50%. Allow at least 24 hours for the dehumidifier to
achieve the humidity level. If you still have damper air than desired, set the humidity level to a lower setting or select Continuous
for maximum dehumidication.
This unit has 3-min lag due to the device for protecting circuit .In order to prolong the compressor's working life, the compressor
will not start until the unit has run for 3 minutes.
4.Display
Shows the set % humidity level while setting, then shows the actual (+/– 5% accuracy) room % humidity level.
5.FAN SPEED Pad
Controls the fan speed. Press to select High or Mid or Low fan speed.
Set the fan control to High for maximum moisture removal. When the humidity has been reduced and quiet operation is preferred,
set the fan control to Mid or Low.
6.TIMER Pad
If unit is turned on and running in timer mode for 2hr or 4hr,can turn off the unit. When unit stand by and running in timer mode
for 2hr or 4hr can turn on the unit.
Other Features
BUCKET FULL Light
Glows when the bucket is ready to be emptied, or when the bucket is removed or not replaced in the proper position.
Alarm
If the bucket is full or missing for more than three minutes, an alarm will sound for about 10 seconds to remind you to empty and
replace the bucket.
Auto Shut Off
The Water Level Control Switch shuts off the dehumidier when the bucket is full, or when the bucket is removed or not replaced
in the proper position.
8
Auto Defrost
When frost builds up on the evaporator coils, the compressor will cycle off and the fan will continue to run until the frost
disappears.
Power Outage
In the case of a power outage or interruption, the unit will automatically re-start, in the settings last used, after the power is
restored.
Technical Information
Service Manual
6.2 Introduction of Basic Mode Function
1. Basic functions of system
(1) Drying mode
Dry conditions and process: under operation status
①
a. When set humity≤ambient humidity-5%, compressor and fan will operate.
b. When set humidity≥ambient humidity+5%, compressor stop operation and fan will stop operation after 3min.
c. When ambient humidity-5%<set humidity<ambient humidity+5%, if compressor is operating, and it will operation with condition a; if
compressor stops operation, it will operate with condition b.
Humidity Range
②
a. 5% is the rst notch. It can be adjusted continuously from CO, 35%-80% (CO stands for dehumidify continuously).
b. Adjust set humidity by “+” and “-” buttons.
2. Protection Function
(1) Compressor Protection
After energization, under any situation and after compressor stops, it will restart 3min delay at least.
Under operation state except there's malfunction of temperature sensor , when turn off unit by on/off button, water-blow protection,
or after compress is starts up, the compressor will stop operation after it operates for 3min at least.
(2) Detection for temperature sensor malfunction
When there's malfunction for temperature sensor, compressor and fan stop operation. LED indicator is OFF and buttons are invalid.
Nixie tube displays F2. After the temperature is resumed normally, restart the unit.
(3) Bucket full protection (off switch)
Under operation status, if there's bucket full protection or the water tank hasn't been installed well, compressor stop operation and
the fan also stop operation after the fan operates continously for 3min. If water blow protection occurred for 3min, the buzzer will
stop after it gives out a beep for 10s.Indicator of bucket full blinks and all the buttons are invalid except on/off button. When the water
level or assembly of water tank resume to normal, signal of bucket full protection will cancelled. Indicator is off, buzzer stops to give
out a beep and the fan resumes to normal operation state. Compressor resumes to operation normally after 3mins. When the unit is
off, bucket full protection is occurred, water blow indicator blinks, compressor and fan stop operation, and all the buttons are invalid
except on/off button.
(4) Freeze protection
If freeze protection is detected during operation, compressor stops operation, fan operates at compulsory high speed and the fan
speed buttons are invalid. When freeze protection is completed, fan speed button are valid, fan operates at set status and the
compressor can be restarted up after stopping for 3 minutes.
3. Other Functions
(1) Buttons on front panel
Timer button: use for timer setting
Fan speed button: adjust fan speed
+/- button : adjust humidity
Filter button: adjust lter function
Power button: turn on or turn off unit
(2) LED indicator
2H timer indicator: the indicator is on after setting 2H timer;
4H timer indicator: the indicator is on after setting 4H timer;
High fan speed indicator: the indicator is on after the fan is set at high fan speed;
Low fan speed indicator: the indicator is on after the fan is set at low fan speed;
CONTINUOUS indicator: After continue humidifying is set, continue humidifying indicator is on;
FILTER RESET indicator: the indicator is on when the operation time of fan reaches to 250h totally. After lter is cleaned, press
Technical Information
9
Service Manual
FILTER button and then this indicator is off.
BUCKET FULL indicator: the indicator blinks if bucket full protection is occurred or the water tank hasn’t been installed well.
(3) Timer OFF control
2h or 4h timer OFF can be set. Timer off can be set under on status. Timer setting is recorded every 30min by memory function.
(4) Display of nixie tube (green)
Under on status, the nixie tube displays current humidity. Press "+" button or "-" button to display set humidity. After humidity is set for
5s, it resumes to display current ambient humidity. If “CO” is set, the nixie tube displays “CO”;
When there’s malfunction of temperature sensor, nixie tube displays “F2” and LED is OFF.
(5) Filter alarming function
a. After the fan operates for 250s totally, the lter indicator is on for reminding customer to clean lter. User presses "lter" button to
clear time and then lter indicator is OFF.
b. Under off status, the lter indicator is off; the lter clean time is recorded every 30mins.
(6) Buzzer
When the controller is energized or receives any command or signal from the buttons or the remote controller, the buzzer will give out
a beep.
(7) Power-off memory function
System can memorize the operation status before power failure. The unit can operate at that status automatically when power
recovery.
(8) Ex-factory default setting
Ex-factory default setting: fan speed: high speed
humidity: continue humidifying (CO).
10
Maintenance
Loading...