Haier HRF-660S User manual

Order No. Ref0904S004V1
◎2010 (HAIER ELECTRICAL APPLIANCES COR. LTD)
Allrightreserved.Unauthorizedcopyinganddistributionisaviolationoflaw.
Refrigerator
SERVICE MANUAL
MODEL: HRF-660S
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.
Haier Group
WARNING

SERVICE MANUAL
Model: HRF-660S
2
Issue 2010-06-21
Rev. Ref0904S004V1
Contents
Table of Contents ·········································································································· 1
1. General Information·································································································· 4
1-1. General guideline ······························································································· 4
1-2. Insurance test····································································································· 4
1-3. How to read this Service Manual········································································ 5
2. Product Feature ········································································································ 6
2-1. Specifications ····································································································· 6
2-2. Main functions ···································································································· 7
2-3. External views ···································································································· 8
3.
Disassembly and Installation ·············································································· 9
3-1. Door and handle································································································· 9
3-2. Lamp switch ······································································································· 9
3-3. Wind passage cover assembly and lamp in fridge chamber······························ 9
3-4. Wind passage cover assembly and lamp in freezer chamber ·························· 10
3-5. Control panel box ····························································································· 11
3-6. Display panel···································································································· 11
4. Control and Display System ····················································································12
4-1. Display control board························································································ 12
4-2. Control function display ···················································································· 12
4-3. Fuzzy mode······································································································ 12
4-4. Open-door warning··························································································· 12
4-5.
Malfunction display····························································································12
4-6. Fridge ON / OFF function ··················································································13
4-7.
Quick freezer function ·······················································································13
4-8.
Fridge lamp control ···························································································13
5.
Control principal and related test functions·························································· 14
5-1. Air Damper······································································································ 14
5-2. Control principle of fan motor·········································································· 14
5-3. Defrost control································································································· 14

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5-4. Self-testing function·························································································15
6. System flow principle······························································································· 16
6-1. System flow scenograph················································································· 16
6-2. System flow chart···························································································· 16
7. Circuit diagram·········································································································· 17
7-1. Main control PCB diagram ·············································································· 17
7-2. Brief principle diagram ···················································································· 18
7-3.Sensor and error codes ··················································································· 18
8. Trouble shooting ·······································································································20
8-1. Frequently problem ························································································· 20

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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 you 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 220V with a frequency of 50～60Hz.
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. In this condition an automatic voltage regulator over 60W should be added.
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 your hand is wet, else you 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.

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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 your products in some way.
1-3. How to read this Service Manual
1-3-1. Using Icons
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, 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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Chapter 2 Product Feature
2-1. Specifications
1 Model HRF-663DTA2
Photo
Product description (Refrigerator/Freezer) Refrigerator-Freezer
Type of appliance (FS=freestanding / BI= built-in) FS
Type of cooling system(NF=no frost/ S=static) NF
Climate class* SN.N.ST
Freezer compartment / Star rating 4*
2 Key features
Total gross volume L 582
Total storage volume L 530
Defrosting (M=manual A=automatic) A
Frost free system yes
Defrost water outlet yes
Air circulating ventilator yes
Kind of coolant R134a/ 180g
Foaming components C-P
3 Technical data
Voltage / frequency V/Hz 220V-240V~/ 50
Input power W 200
Cooling system: K=Compressor / A=Absorption K
4 Door:
F= flat / R= rounded / S= streamline S
Inside color w
Hinged (r =right l =left) / reversible R / L
Freezing compartment integrated with door No
Shelves:
Number Fridge / Freezer n° 4 / -
Type (gr=grill / g=glass / p=plastic) g / P
Color w-white / g=green / t=transparent. t
Adjustable (Y=yes / N=not) Yes
Crisper:
Number Fridge / Freezer n° 2 / -
Color of crisper(s) ( t=transparent / w=white) t

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Drawer:
Number Fridge / Freezer n° - / 2
Color of drawer(s) ( t=transparent / w=white) t
Bottle holder:
Number Fridge / Freezer n° 5 / 4
Color of bottle holder(s)( t=transparent / w=white) t
5 Equipment & accessories
Con trol panel:
Interior / exterior Interior
Thermometer interior / exterior Interior
Over temperature alarm LED / acoustic Yes
Adjustable thermostat Yes
Fast freeze switch /-function Yes
Deodorizing Yes
Interior light W Yes
ice maker Manual/ Automatic M
Adjustable feet front / rear n° 2 /FRONT
Castors front / rear -/yes
6 Product dimensions
Unit dimensions ( H / W / D) mm 1768/890/770
Net weight kg 120
7 Service
User manual Multi-Languages
2-2. Main Functions
1. Whole air-cooled computer control system, there is a freezer evaporator and a fan in
freezing room, fridge room through the air circulation blowing by fan to carry on the
refrigeration,, fridge room is controlled through the ON/OFF of electronic damper to
achieve temperature control, control freezing room temperature through the run and stop
of compressor.
2. Large LED digital display to show each inner room temperature。
3. AI control function. Chamber temperature can control automatically according to the
ambient temperature, and no need human intervene.
4. Malfunction self-diagnosis function. It can shows error codes automatically to help
solving problems in time when system does not work properly.
5. Open-Door warning function: If the door is not properly closed, or the door is opened
for an extended period , the appliance buzzer will sounds at an interval.
6. Ultra-thin door design, appearance is more concise and generous.

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2-3. External views

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Chapter3 Disassembly and Installation
3.1. Door and handle
1. Loosen the screw by screwdriver, and then remove the
hinge cover from upper way.
2. Loosen the screw fixing the upper hinge to the body and
lift the door.
3. Door gasket can be pulled out from door foam assembly .
4. Fix the bolt into the hole on the door, and then use the
handle aiming to the bolt, push the handle down until it
touch the door firmly.
3.2. Lamp Switch
1. To remove the switch pulls out it with a flat type
screwdriver as shown in.
2. Disconnect the lead wire from switch.
3.3. Wind passage cover assembly and lamp in fridge chamber
1. Unplug the power cord from the outlet;
2. Remove the fridge shelf;
3. Remove the lamp cover ;
4. The bulb can be replaced;

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5. Loosening 2 screws fixed to ceiling of inner liner;
6. Pull out the electric damper, wind passage and the wind passage cover;
7. After replaced the disabled parts, assemble in reverse order of disassembly.
3.4. Wind passage cover assembly and lamp in freezer chamber
1. Unplug the power cord from the outlet;
2. Remove the freezer shelf;
3. Remove the lamp cover;
4. The bulb can be replaced;
5. Loosening 2 screws fixed the cover and pull out the top
freezer air tower;
6. Pull out the bottom freezer air tower and unplug the
sensor cable;
7. Pull out the freezer rack, unplug the fan motor cable and
separate the fan motor cover and the rack.
8. Pull out the freezer air shutter;
9. Unplug the defrost sensor cable and replace it;
10. Assemble in reverse order of disassembly.

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3.5. Control panel box
1.Unplug the power cord from the outlet;
2.Lossening 4 screws fixed the control panel box cover;
3.Open the cover;
4. Replace or check the control panel if necessary.
3.6. Display panel
1.Unplug the power cord from the outlet;
2.Lossening 2 screws fixing the bottom of control panel
assembly;
3.Unplug the display panel;
4.Lossening 4 screws fixing the control panel.

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Chapter 4 Control and display system
(1) Display control board
(2) Control function display
30 minutes later after the final press of button, display will be blank. Previous display can be resumed
if any button is pressed or any door opened.
(3) Fuzzy mode
If fuzzy mode is activated, the appliance will adjust inside temperature automatically according to
ambient temperature. Fuzzy mode is activated and inactivated by consecutive press of button A, then
light E will be turned on and off.
NOTE: Fridge temperature can not be adjust in Fuzzy mode.
(4) Open-door warning
If the door is not properly closed, or the door is opened for an extended period (more than 60
seconds), the appliance buzzer will send out 3 alarm sounds at an interval 30 seconds, until the door
is closed properly.
(5) Malfunction display
If control or function system does not work properly, information of refrigerator or freezer
compartment temperature will not be display, This will not affect the cooling effect in short period of

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time. User should contact authorized after-sales service for technical assistance in time.
(6) Fridge ON/OFF function
Hold button D pressed for 3 seconds, the refrigerator performance ceased and icon H goes out,
leaving refrigerator light under normal status.
If refrigerator performance ceased, hold refrigerator temperature button D for 3 seconds again, icon
H will appear and refrigerator performance will be resumed.
(7) Quick freeze function
Press button B, indicator F lights, and super freeze mode is activated. If button B is press again,
indicator F goes out and super freeze mode is inactivated.
Super freeze function is designed to preserve the nutritional value of food, as the food will freeze
completely in the shortest period possible with compressor continual running. The appliance will exit
super freezer mode after continual running for 4 hours.
NOTE: Freezer temperature can not be adjust in Super Freezer mode.
(8) Fridge lamp control
When the fridge door is open, lamp will be light, and if keep the door open more than 7 minutes,
lamp will extinguish automatically.

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Chapter 5 Control principal and related test functions
5-1. Air damper
1) Refrigerating sensor R1 controls the startup and shutdown of air damper in refrigerator
compartment.
2)The air damper is closed (in order to prevent the compartment from freezing) within 15 minutes
from the beginning to the finishing of defrosting.
3) Force the air damper to be opened and closed once if it can not be opened within 1 hour. After
that, decide whether open or close it according to R1 sensor.
4) The air damper heater and ice dispenser heater work in-phase.
5) Environment temperature is above 12 , the heater of bar will be on, when lower than 10 ,℃℃
heater will be off.
6) Dispenser heater and water drain pipe heater will be off for 10 minutes and 30 minutes on, thus a
circulation.
5-2. Control principle of fan motor
Control of freezing fan:
When open the refrigerating door, the refrigerating air damper will be turned on, and the freezing fan
will be working, after 2 minutes the refrigerating air damper will be turned off.
When open the freezing door, If the freezing fan works at a speed of 1500 RPM, the freezing fan will
keep working but switch to 1300 RPM. If the fan works at a speed of 1300 RPM, it will shut off when
the freezing door is open.
Control of refrigerating fan:
This fan is working in-phase with the compressor and at a fixed speed of 1100 RPM.
5-3. Defrost control
Automatic defrost: After added up to 7 hours of compressor running, defrost will be switched on.
When defrost SNR temperature reaches 7℃, defrost will be over.
If the defrosting time is more than 120 minutes, and defrost sensor still can not reach to 7ºC, it will
stop defrosting process and give warning error indicator—display error code F6..
Easily failure components of defrosting system：
1）Defrosting fuse: It is located in the left side of evaporator. If the fuse is open circuit, means it is
defective.
2）Connectors: The frequently failure phenomenon is that pin of connectors is dislocation or
oblique.
3）Defrosting sensor: It is located in the upper right side of evaporator, the sensor control the
defrosting time.

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5-4. Self-testing function
About self-test function：
(1) With self-test function, the appliance can quickly check the
working condition of fan, compressor and defrost heater.
(2) How to enter and quit: press the test button on the main
control board once, and enter the forced starting mode, and a
second time press to enter forced defrosting mode.
MODE OPERATION WORKING CONDITION REMARKS
(1) compressor forced start.
(2) freezing fan work at high speed
(3) refrigerating fan work
(4) heater shut down
TEST1
Press test button
once to enter
Forced Start mode.
(5) air escaper opens
Press test button
two times to quit this
mode.
(1) compressor shut down
(2) no fan works
(3) Defrost heater works
TEST2
Under test 1 and
press test button
again to enter
Forced Defrost
mode. (4) air escaper closes
Press test button
one time to quit this
mode.
Resume
normal
mode
Press test button for
a third time.
Resume to normal mode and the compressor will start in 7
minutes.
TEST button

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Chapter 6 System flow principle
6-1.System flow scenograph
6-2.System flow chart
(1)Compressor
(2)Condenser
(3)Hot connector pipe for freezer
(4)Hot connector pipe for fridge
(5)Drier filter
(6)Capillary tube
(7)Evaporator
(8)Suction pipe
(9)Compressor DC fan motor
(10)Freezer DC fan motor
This product adopts an air-cooled
refrigeration system to ensure accurate
refrigeration in freezer compartment
and refrigeration compartment.

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Chapter 7 Circuit diagram Chapter 7 Circuit diagram
7-1. Main control PCB diagram

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7-2. Brief principle diagram
7-3. Sensors and error codes
Sensor Location:

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Sensor name Sensor
marker Sensor location Function
RT sensor RT SNR under the right hinge box measure the temp. of the
circumstance
Refrigerator sensor 1 R1 SNR beside the air-vent in REF measure the temp. of the air
Refrigerator sensor 2 R2 SNR on the right side of the REF cabinetmeasure the temp. of the REF
compartment
Defrosting sensor D SNR on the top of the evaporator in FRZ measure the temp. of the evaporator
Freezer sensor F SNR middle of freezer compartment measure the temp. of the FRZ
compartment
Error code list:
Error Indicator
NO Malfunction
F SET R SET
Error code meaning
1 F SNR failure F4 normal F SNR is short circuit or open circuit
2 RT SNR failure normal F3 RT SNR is short circuit or open circuit
3 R1 SNR failure normal F1 R1 SNR is short circuit or open circuit
4 R2 SNR failure normal F2 R2 SNR is short circuit or open circuit
5 D SNR failure normal F6 D SNR is short circuit or open circuit
6 Freezer fan motor failure normal E1 more than 30 seconds without signal
7 Condenser fan motor failure normal E2 more than 30 seconds without signal
8 failure communication normal E0
No reflect when setting ,between
display PCB and Power PCB no signal
transmitted over 2 min
9 Defrosting system failure normal Ed can not reach -12℃within 2 hours

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Chapter 8 Trouble shooting
8.1. Frequently problem
Water/moisture/frost in the refrigerator
Moisture accumulates
on the refrigerators
inner walls
Hot and moist climate.
The door is not closed
tightly
The door is opened too
frequently or for too
long time
Accumulation of frost and moisture
accelerate in such climate.
Make sure the refrigerator is level and
there is no food or container interfering
with the door
Do not open the door so frequently
Water/moisture/frost on outside surface of the refrigerator
Moisture accumulates
on the refrigerator’s
outside surface or
between two doors
Damp climate
The refrigerator door is
not closed tightly. This
causes mixing of the
cold air in the
refrigerator with the
warm air outside it
It is normal in damp climate. The moisture
will decrease when the humidity drops.
Make sure the refrigerator is level and
there is no food or container interfering
with the door
Refrigerator operation
The compressor does
not work
The refrigerator is in
defrosting cycle.
The refrigerator is not
plugged into a power
outlet.
The refrigerator is in
OFF state.
It is normal for an automatic defrosting
refrigerator.
Verify the plug is plugged in the socket
firmly.
Press the “Power” button for 3 second or
more to restart the refrigerator or turn the
knob from OFF to temperature selection
position.
The fridge storage
compartment does not
work
The air door cable is not
connected properly.
The fan does not work
The fridge storage
compartment is turned
off
Check if the air door cable is not
connected properly and install it correctly
if not so. Verify that the air door acts
normally with the Fridge ON/OFF key on
the display panel
The fan does not work while the
refrigeration air door is open. Please
check if the door on-off behind the front
decoration strip is installed properly.
Reinstall it correctly if not so.
Turn on the fridge storage compartment
manually
The refrigerator runs
frequently or runs for
too long period
The indoor or outdoor
temperature is high
The refrigerator has
been powered off for a
period of time.
The automatic icemaker
is operating.
The door is opened too
frequently or for long
periods.
The door of the fridge /
freezer storage
compartment is not
tightly closed.
The temperature setting
for the freezer storage
compartment is too low
In this case, it is normal for the
refrigerator to run longer.
Normally, it takes 8 to 12 hours for the
refrigerator to totally cool down.
Icemaking process makes the refrigerator
to run longer.
Warm air enters the refrigerator and
causes it to start frequently. Please do not
open the door so frequently.
Make sure the refrigerator is level place
and there is no food or container
interfering with the door.
Set the temperature higher until
satisfactory refrigerator temperature is
obtained. It takes 24 hours for the
refrigerator temperature to become
stable.