Haier HF50CM23NW, HF71CM33NW, IF50CM23NW, IF71CM33NW Service Manual
Order No. Ref1404S005V0
2014(HAIER ELECTRICAL APPLIANCES COR. LTD)
©All right reserved. Unauthorized copying and distribution is a violation of law.
Chest Freezer
MODEL: HF50CM23NW
HF71CM33NW
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
S
ERVI
C
E MAN
U
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SERVICE MANUAL
Model: HF50CM23N
W
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HF71CM33N
W
2
Issue 2014-04-12
Rev.
Ref1404S005V0
Contents
Chapter 1 General Information ............................................................................................................. 3
1-1. General Guidelines ........................................................................................................................ 3
1-2. Insulation Test ................................................................................................................................ 3
1-3. How to read this Service Manual ................................................................................................... 4
Chapter 2 Product Feature ................................................................................................................... 5
2-1. Specification .................................................................................................................................. 5
2-2. External views ............................................................................................................................... 6
Chapter 3 Installation, adjustments and maintenance .......................................................................... 7
3-1. Installation ..................................................................................................................................... 7
3-2 Defrosting and Draining .................................................................................................................. 7
3-3 Cleaning the Freezer ...................................................................................................................... 8
Chapter 4 Disassembly ......................................................................................................................... 9
4-1. Door assembly (Door, hinge, hinge cover) .................................................................................... 9
4-2. Compartment grill assembly .......................................................................................................... 9
4-3. Control panel assembly (Panel, cover board, knob, indicator light) ............................................. 10
4-4. Thermostat assembly .................................................................................................................. 1 1
Chapter 5 Control and display system ................................................................................................ 12
5-1. Control panel ............................................................................................................................... 12
5-2. Starting the Freezer ..................................................................................................... ................ 12
Chapter 6 System flow principle ......................................................................................................... 13
6-1. Refrigeration flow chart ................................................................................................................ 13
6-2. Refrigeration flow scenograph ..................................................................................................... 14
Chapter 7 Circuit diagram ................................................................................................................... 15
7-1. Brief principle diagram ................................................................................................................. 15
Chapter 8 Trouble shooting ................................................................................................................ 16
8-1. Normal phenomena .........................................................................................................
............ 16
8-2. Abnormal phenomena.................................................................................................................. 18
SERVICE MANUAL
Model: HF50CM23N
W
/
HF71CM33N
W
3
Issue 2014-04-12
Rev.
Ref1404S005V0
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. Insulation 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 98～126V) 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.
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.
SERVICE MANUAL
Model: HF50CM23N
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HF71CM33N
W
4
Issue 2014-04-12
Rev.
Ref1404S005V0
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
Icons are used to attract the attention of the reader 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.
SERVICE MANUAL
Model: HF50CM23N
W
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HF71CM33N
W
5
Issue 2014-04-12
Rev.
Ref1404S005V0
Chapter 2 Product Feature
2-1. Specification
/
Superfast freezing.
Adjustable thermostat to realize freezing and
cooling
High pressure and microbiological foam filled door
for energy conservation.
convenient water drain.
External controls.
0%CFC.
Comply with RoHS.
/
/
1. Type Model / HF50CM23NW
HF71CM33NW
Commercial brand / Haier Haier
Product description / Chest Freezer Chest Freezer
Type of appliance (FS=free standing /BI= built-in) / FS FS
Climate class (N=16-32℃ ST=18-38℃ T=18-43℃)
/ N N
2. Key index / / /
Gross capacity l 142 198
Total net capacity l 142 198
Defrosting (Manual-Automatic) / Manual Manual
Kind of coolant (R134a/R600a) / R600a R600a
Foaming components (R141b/C-P) / C-P C-P
3. Technical data / / /
Voltage / frequency/Compressor brand V/Hz 115V/60Hz 115V/60Hz
Input power / currency W/A 1.69A 1.70A
Lowest Temperature °C
≤-18°C ≤-18°C
Energy consumption (EN153) per year kWh/year
216kW·h/year 248kW·h/year
Cooling system:(K=Compressor / A=Absorbtion) / K K
4. Product net dimensions / / /
Unit dimensions (H / W / D) cm 84.5/72/55 84.5/94/55
Net weight kg 33 38
5. Packing dimensions & loadability / / /
Packing dimensions (H / W / D) cm 89.0/77.5/58.0 89.0/99.5/58.0
Gross weight kg 36 36
SERVICE MANUAL
Model: HF50CM23N
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HF71CM33N
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Issue 2014-04-12
Rev.
Ref1404S005V0
2-2. External views
Door
Cabinet
Control panel
Drain pipe
SERVICE MANUAL
Model: HF50CM23N
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HF71CM33N
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Issue 2014-04-12
Rev.
Ref1404S005V0
Chapter 3 Installation, adjustments and maintenance
3-1. Installation
The freezer should be conveniently located for day-to-day use in a dry well-ventilated room.
Do not install the freezer where the temperature will go below 0°F or above 110°F, because it will not
maintain proper temperatures.
Be sure to install the freezer on a floor strong enough to support it when it is fully loaded.
The freezer must be solidly positioned on the floor if it is to function at its best. Shims may be used to
accomplish this wherever the floor is too uneven. If the place selected for the freezer is damp or moist,
place 2 X 4 s (51 mm X 102 mm) under its entire length to assure adequate support.
If the freezer has been inclined more then 45° position, we need wait 24 hours before
restarting the freezer.
3-2 Defrosting and Draining
In most climates, defrosting will be necessary only about twice a year.
To have the freezer operate most efficiently, do not permit more than 1/2” (13 mm) of frost to
accumulate on the shelves.
To remove frost, scrape with a plastic or wood spatula or scraper.
Do not use an ice pick or sharp-edged instrument as it may damage or scratch the freezer.
Do not use any electrical device in defrosting the freezer.
For Complete Defrosting
1. Turn the temperature control to the OFF position and unplug the freezer.
2. Remove all food and place it in corrugated boxes, insulated bags, picnic coolers, etc. Use towels
and newspapers for insulation as needed.
3. With the doo r/lid open, use pans of hot water to speed loosening of frost. Remove large pieces
before they melt.
Chest models have a defrost water drain at the front.
4. Sponge excess water from the bottom of the freezer as it collects to prevent over flowing.
5. After defrosting, clean the inside of the freezer.
6. Replace the drain plug inside the cabinet and the cap on the defrost drain. Fold over and dry the
gasket on the hinge side of the lid.
7. Plug in the freezer. Return the temperature control to its previous position and return food to the
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