Haier HRFZ-250DAA User manual

Order NO. Ref0911S006V0
◎2012(HAIER ELECTRICAL APPLIANCES COR. LTD)
All right reserved. Unauthorized copying and distribution is a violation of law.
Refrigerator
SERVICE MANUAL
MODEL:HRFZ-250DAA
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

.
SERVICE
MANUAL
Model
:
HRFZ
-
250DAA
2
Issue
20
12
-
4
-
9
Rev.
Ref09
11
S00
6
V0
Contents
Table of Contents……………………………………………………………………………2
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. External views ..................................................................................................... 6
Chapter 3 Disassembly .................................................................................................. 7
3-1. Thermostat disassembly ..................................................................................... 7
3-2.The door right-left change .................................................................................... 9
Chapter 4 Adjustments and maintenance .................................................................. 10
4-1. Adjust the adjustable feet .................................................................................. 10
4-2.Adjus the thermostat .......................................................................................... 10
4-3. Maintenance ......................................................................................................11
Chapter 5 Flow chart .................................................................................................... 12
5-1. Refrigeration flow chart ..................................................................................... 12
5-2. Refrigeration flow scenography ......................................................................... 13
Chapter 6 Circuit diagram ............................................................................................ 14
6-1. Brief principle diagram ...................................................................................... 14
Chapter 7 Trouble shooting ......................................................................................... 15
7-1. phenomena and solving .................................................................................... 15
7-2.Compressor parameter ...................................................................................... 18
7-3.Termostat parameter .......................................................................................... 18
Chapter 8 Quick check ................................................................................................. 19
8-1.No cooling .......................................................................................................... 19
8-2.Compressor no start........................................................................................... 20
8-3.Poor cooling ....................................................................................................... 22
8-4.Noisy .................................................................................................................. 23
Haier Group

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SERVICE
MANUAL
Model
:
HRFZ
-
250DAA
3
Issue
20
12
-
4
-
9
Rev.
Ref09
11
S00
6
V0
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 220-240V with a frequency of 50Hz.
10. A big fluctuation of voltage (exceed the range 187～242V) 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

.
SERVICE
MANUAL
Model
:
HRFZ
-
250DAA
4
Issue
20
12
-
4
-
9
Rev.
Ref09
11
S00
6
V0
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.

.
SERVICE
MANUAL
Model
:
HRFZ
-
250DAA
5
Issue
20
12
-
4
-
9
Rev.
Ref09
11
S00
6
V0
·Chapter 2 Product Feature
2-1. Specifications
1 Model HRFZ-250DAA
Photo
Commercial brand Haier
Product description Refrigerator
2 Capacity
Total Volume (L) 217
Net capacity 215
Fridge volume net 171
3 Features
Manual Defrost No
Adjustable Temperature Control Yes
Defrost water outlet No
Open-door change (right –left) Yes
Kind of coolant R600a
4 Technical data
Voltage/Frequency 220-240V/50Hz
Input power 80W
5 Aesthetics
Colours
Top cover YES
Door White
6 Equipment or accessories
Adjustable thermostat Yes
Adjustable feet (front / rear) Front
7 Product dimensions
Unit dimensions H/W/D (mm) 1430*550*580
Net weight (Kg) 45

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SERVICE
MANUAL
Model
:
HRFZ
-
250DAA
6
Issue
20
12
-
4
-
9
Rev.
Ref09
11
S00
6
V0
8 Packing dimensions
Packing dimensions H/W/D (mm) 1473*575*605
Gross weight (Kg) 50
2-2. External views
Function schedule
1. Application of low noise technology
The compressor low noise technology is applied for integration of noise reduction and super freezing.
2. Energy-efficiency

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SERVICE
MANUAL
Model
:
HRFZ
-
250DAA
7
Issue
20
12
-
4
-
9
Rev.
Ref09
11
S00
6
V0
Thick heat insulation is used to minimize temperature gain and to optimize the cooling system for the
most efficient cooling result.
3. Crisper with adjustable moisture
Moisture in the crisper can be adjusted for satisfaction of vegetables and fruit storage
Chapter 3 Disassembly
Cut the power when we demount and install the refrigerator.
3-1. Thermostat disassembly
1
Use the screwdriver to take down the screw on
the control cover.
2
Take down the thermostat knob, and remove the
nut on the control cover.
3
Take down the terminals on the thermostat.
3
2
1

.
SERVICE
MANUAL
Model
:
HRFZ
-
250DAA
8
Issue
20
12
-
4
-
9
Rev.
Ref09
11
S00
6
V0
4
Take down the thermostat.
5
We assemble it according to the reverse order.
Note: connect the thermostat connection terminal must accord to the order of photo 4
4

.
SERVICE
MANUAL
Model
:
HRFZ
-
250DAA
9
Issue
20
12
-
4
-
9
Rev.
Ref09
11
S00
6
V0
3-2.The door right-left change

.
SERVICE
MANUAL
Model
:
HRFZ
-
250DAA
10
Issue
20
12
-
4
-
9
Rev.
Ref09
11
S00
6
V0
Chapter 4 Adjustments and maintenance
4-1. Adjust the adjustable feet
4-2.Adjus the thermostat
Our fridge freezer’ temperature is controlled by means of an adjustable thermostat located at the right
hand side wall of the refrigerator compartment. The thermostat may be positioned anywhere between
1 and 7. With “7” being coldest and “1” means turn off the fridge. And generally we turn the position at
“3-5”.