Haier HA10TG31SW User manual

Order NO.Ref1409S001V0
◎2014(HAIER ELECTRICAL APPLIANCES COR. LTD)
Allrightreserved.Unauthorizedcopyinganddistributionisaviolationoflaw.
Refri
g
erator
SERVICE MANUAL
MODEL: HA10TG31SW
HA10TG31SB
HA10TG
31
SS
Haier Group
This service information is designed for experienced repair technicians only and is not designed for use by the general public. It
dose not contain warnings and cautions to advice non-technical individuals of potential dangers in attempting to service a product.
Product powered by electricity should by serviced or repaired only by experienced professional technicians. Any attempt to service
or repair the product or products dealt with in this service information by anyone else could result in serious injury or death.
WARNING

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SERVICE MANUAL
Model: HA10TG20SW/S/B
2
Issue 2009-7-24
Rev. Ref0907S005V0
Contents
Chapter 1 General Information .......................................................................................................................3
1-1. General Guidelines ..................................................................................................................................3
1-2. Insurance Test .........................................................................................................................................3
1-3. How to read this Service Manual.............................................................................................................4
Chapter 2 Product Feature .............................................................................................................................5
2-1. Specifications...........................................................................................................................................5
2-2.Compressor Parameter ............................................................................................................................6
2-3. Fan Parameter.........................................................................................................................................7
2-4.Defrosting Heater Parameter....................................................................................................................7
2-5. External views..........................................................................................................................................8
2-6. Function Schedule ...................................................................................................................................8
Chapter 3 Disassembly...................................................................................................................................9
3-1. FRZ Air duct disassembly........................................................................................................................9
3-2. REF air duct assembly disassembly......................................................................................................10
3-3.Door disassembly ...................................................................................................................................12
Chapter 4 System flow principle ...................................................................................................................13
4-1. Refrigeration flow chart..........................................................................................................................13
4-2.Flow of cold air........................................................................................................................................14
Chapter 5 Circuit diagram .............................................................................................................................15
5-1. Brief principle diagram ...........................................................................................................................15
5-2. Control PCB diagram.............................................................................................................................16
5-3.Defrosting Principle.................................................................................................................................17
5-4. Sensor location ......................................................................................................................................17
5-5.PCB Test .................................................................................................................................................20
Chapter 6 Trouble shooting...........................................................................................................................21
6-1. Poor cooling...........................................................................................................................................21
6-2. No defrosting .........................................................................................................................................22

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SERVICE MANUAL
Model: HA10TG20SW/S/B
3
Issue 2009-7-24
Rev. Ref0907S005V0
Chapter 1 General Information
1-1. General Guidelines
When servicing, observe the original lead dress. If a short circuit is found, replace all parts which have
been overheated or damaged by the short circuit. After servicing, see to it that all the protective devices
such as insulation barriers, insulation papers shields are properly installed. After servicing, make the
following leakage current checks to prevent the customer from being exposed to shock hazards.
1) Leakage Current Cold Check
2) Leakage Current Hot Check
3) Prevention of Electro Static Discharge (ESD) to Electrostatic Sensitive
1-2. Insurance Test
1. Check if there is any leak of current.
2. Cut out the power supply before the repair to avoid an electrical shock hazard.
3. In the case of a live-line test, insulating gloves should be worn to avoid potential electrical shock.
4. Confirm the rated current, voltage and capacity before testing with any kinds of instruments.
5. Watch if the upper door is open when we check something at a lower position.
6. Take out every part in the cabinet before moving the machine, especially things like panels (e.g.
glass shelf).
7. Please wear intact cotton gloves when repair any parts of the evaporator, so that scratches by
the sharp fins can be avoided.
8. If there is a breakdown with the refrigeration system, please surrender the machine to the service
center, else the leaked refrigerant may pollute the atmosphere.
9. The refrigerator use AC of 115V with a frequency of 60Hz.
10. A big fluctuation of voltage (exceed the range 100～120V) may cause a start failure of the
refrigerator, a burn-out of the control panel and compressor, or an abnormal sound from the
compressor in operation.

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SERVICE MANUAL
Model: HA10TG20SW/S/B
4
Issue 2009-7-24
Rev. Ref0907S005V0
11. Take care not to damage the supply line. Don’t yank at the line; pull the plug out gently from the
receptacle. Don’t press the line under the cabinet or step on it. Take care not to roll on or damage the
supply line when moves the machine from the wall.
12. In the case of leakage of inflammable gases like carbon monoxide, open the door and windows.
Don’t pull out or insert the plugs of the appliance.
13. Don’t touch the refrigeration surface of the freezing compartment when the refrigerator is in
operation, especially when our hand is wet, else we may be glued to the surface.
14. Pull out the plug of power supply during clearance or power outage. Wait at least five minutes to
resume the power supply in order to prevent damage to the compressor caused by continuous restart.
Photo used in this manual
The illustration and photos used in this Manual may not base on the final design of products, which may
differ from the products in some way.
1-3. How to read this Service Manual
1-3-1. Using Icons
Icons are used to attract the attention to specific information. The meaning of each icon is described in the
table below:
Note:
A “note” provides information that is not indispensable.
Caution:
A “caution” is used when there is danger that the reader, through incorrect manipulation, may damage
equipment, loose data, get an unexpected result or has to restart (part of) a procedure.
Warning:
A “warning” is used when there is danger of personal injury.
Reference: A “reference” guides to find additional information on a specific topic.

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SERVICE MANUAL
Model: HA10TG20SW/S/B
5
Issue 2009-7-24
Rev. Ref0907S005V0
Chapter 2 Product Feature
2-1. Specifications
Photo
Model HA10TG31SW HA10TG31SB HA10TG31SS
Type of appliance (FS=free standing / BI= built-in) FS FS FS
Climate class (N=16-32℃ST=16-38℃T=18-43℃)T T T
Gross capacity 286.3 L 286.3 L 286.3 L
Total net capacity 286.3 L 286.3 L 286.3 L
Defrosting (Manual-Automatic) Automatic Automatic Automatic
Defrosting water outlet Yes Yes Yes
Air circulating ventilator Yes Yes Yes
Kind of coolant (R134a/R600a) R600a R600a R600a
Voltage / frequency(V/Hz) 115~ / 60 115~ / 60 115~ / 60
Input power (W /A) 70/2 70/2 70/2
Length of cable / incl. plug (cm) 200 200 200
Temperature range (from>to) 4～-18°C 4～-18°C 4～-18°C
Control panel Manual Manual Manual
Control panel (interior/exterior) interior interior interior
Interior light(W) 1.5 1.5 1.5
Unit dimensions (H / W / D)(mm) 1512/597/646 1512/597/646 1512/597/646
Depth of open door(mm) 1195 1195 1195
Net weight(Kg) 59 59 59
Packing dimensions (H / W / D)( mm) 1555/660/703 1555/660/703 11555/660/703
Gross weight(kg) 68 68 68

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SERVICE MANUAL
Model: HA10TG20SW/S/B
6
Issue 2009-7-24
Rev. Ref0907S005V0
2-2.Compressor Parameter
Part Name Check Method and Criterion
Compressor
Measure the resistance with a tester.
(Ambient temperature : Room temperature 25°C)
Model Main Wiring Auxiliary Wiring
ATH50U6
Normal 4.1 6.36
A
bnormal Open() or Short Circuited (0 )
PTC
Starter
Relay
Measure the resistance with a tester.
(Ambient temperature : Room temperature 25°C)
Model QP3-4.7A-G1
Normal 4.7 
Abnormal Open() or Short Circuited (0)
Overload
Protector
Measure the resistance with a tester.
(Ambient temperature : Room temperature 25°C)
Model BT78-120
Normal Less than 1 
Abnormal Open() or Short Circuited (0)
Running
Capacitor
Measure the resistance with a tester.
(Ambient temperature : Room temperature 25°C)
Model CBB65A-2
Normal Open(∞)
Abnormal Short Circuited (0)

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SERVICE MANUAL
Model: HA10TG20SW/S/B
7
Issue 2009-7-24
Rev. Ref0907S005V0
2-3. Fan Parameter
No. Characteristic Value Unit
1 Rated voltage 115 V
2 Input power 5.9 w
3 Output power 2.2 w
4 Rotate speed with load 3000 rpm
5 * Rated frequency 60 Hz
6 Voltage range 104-126 V
2-4.Defrosting Heater Parameter
No. Characteristic Value Unit
1 Rated voltage 115 V
2 Output power 150 w
3 Heater length 700 mm

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SERVICE MANUAL
Model: HA10TG20SW/S/B
8
Issue 2009-7-24
Rev. Ref0907S005V0
2-5. External views
2-6. Function Schedule
1. Air-cooling and automatic defrosting
2. Round door design and fashion handles
3. Energy-saving
4. Adjustable humidity crisper
5. Isolated food shelf
6. Crisper with adjustable moisture
A= freezer shelf B= control panel C= shelf D= crisper cover E= crisper
F= door shelf G= coke shelf H= butter tray I=door rack
A
B
C
D
E
F
G
H
I

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SERVICE MANUAL
Model: HA10TG20SW/S/B
9
Issue 2009-7-24
Rev. Ref0907S005V0
Chapter 3 Disassembly
3-1. FRZ Air duct disassembly
1
Remove four screws which fixed the air passage
cover. with screwdriver .
2
Hold the protruding part of the air passage cover
as picture, disconnect the fan motor cable
connectors and then take off the air passage
cover.
3 We assemble it according to reverse order.

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SERVICE MANUAL
Model: HA10TG20SW/S/B
10
Issue 2009-7-24
Rev. Ref0907S005V0
3-2. REF air duct assembly disassembly
1
Remove three screws which fixed the thermostat house.
with screwdriver
2.
Disconnect all the cable connectors, take out the
assembly
3 Take off the tape
4 Take off the sensor
5 Remove the LED cover