Haier HBC-200 Service Manual - Page 26

Refrigerator problem analysis and service

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Refrigerator Model:HBC-70/200（India） MAINTENANCE SERVICE AND TROUBLE SHOOTING 12.1.11 Refrigerator problem analysis and service Problems Compressor can not be started Compressor starts too frequent, operation time too long, but temperature drop in refrigerator is too slow Reasons 1. Fuse is broken 2. The contact of plug, socket, and cable is not good. Cable broken. 3. The voltage is too low, 10-15% less than rated voltage 4. The knob of temperature controller is at "rest" position. 5. The temperature controller is out of order. 6. Starting relay or thermal protection unit is out of order or broken. 7. Wire broken of motor starting coil or operation coil. 8. The compressor motor is burned or rotator and stator are blocked to dead. 9. There is leakage of high-pressure gas valve or the shaft is embraced to dead. 1. The distance between temperatures sensing tube of temp. Controller and evaporator are too big. 2. The temperature controller is out of order. 3. Food stuffs in the refrigerator too much, door opens too frequent and open time too long. 4. The environment temperature is too high, humidity too high, airflow is impeded. 5. The frost layer at the evaporator is too thick. 6. The refrigerant is insufficient or leakage. 7. Compressor efficiency is reduced. 8. The drying filter is blocked. Removing methods 1. Check if there is short circuit and solve it, if not, change capable fuse 2. Check and connect tightly, or change. 3. Use till voltage rises to rated value or attach a stabilizer. 4. Rotate the knob to wanted position for suitable temperature. 5. Change the controller. 6. Change starting relay or thermal protection unit. 7. Measure using R×1 position of avometer, if there is wire broken, change compressor. 8. Change compressor. 9. Change compressor. 1 Adjust and make it close to evaporator cover. 2.Change the temperature controller. 3.Reduce them. 4.Put the refrigerator to suitable place and make air circulate well. 5.Remove frost regularly. 6.Check or supplement refrigerant. 7.Change compressor. 8.Change new drying filter. Compressor runs without stop, temperature in refrigerator is too low 1.The knob of temperature controller has been set to "over cooling" position. 2.The contacting point of temperature controller is adhered. 3.The temperature sensing probe of controller is not placed well, and causes maladjustment 4.Compressor efficiency reduced. ２５ 1. Change the position to moderate. 2. Repair or change. 3. Adjust to suitable position, normally contact tightly with evaporator cover. 4.Change compressor. PDF created with pdfFactory trial version www.pdffactory.com

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Refrigerator
Model:HBC-70/200
（
India
）
２５
MAINTENANCE SERVICE AND TROUBLE SHOOTING
12.1.11 Refrigerator problem analysis and service
Problems
Reasons
Removing methods
Compressor
can
not
be
started
1. Fuse is broken
2. The contact of plug, socket, and cable
is not good. Cable broken.
3. The voltage is too low, 10-15% less
than rated voltage
4. The knob of temperature controller is at
“
rest
”
position.
5. The temperature controller is out of
order.
6. Starting relay or thermal protection unit
is out of order or broken.
7. Wire broken of motor starting coil or
operation coil.
8. The compressor motor is burned or
rotator and stator are blocked to dead.
9. There is leakage of high-pressure gas
valve or the shaft is embraced to dead.
1. Check if there is short circuit and
solve it, if not, change capable fuse
2. Check and connect tightly, or
change.
3. Use till voltage rises to rated
value or attach a stabilizer.
4. Rotate the knob to wanted
position for suitable temperature.
5. Change the controller.
6. Change starting relay or thermal
protection unit.
7. Measure using R
×
1 position of
avometer, if there is wire broken,
change compressor.
8. Change compressor.
9. Change compressor.
Compressor
starts
too
frequent,
operation
time too long,
but
temperature
drop
in
refrigerator is
too slow
1.
The distance between temperatures
sensing tube of temp. Controller and
evaporator are too big.
2.
The temperature controller is out of
order.
3.
Food stuffs in the refrigerator too
much, door opens too frequent and
open time too long.
4.
The environment temperature is too
high, humidity too high, airflow is
impeded.
5.
The frost layer at the evaporator is too
thick.
6.
The refrigerant is insufficient or
leakage.
7.
Compressor efficiency is reduced.
8.
The drying filter is blocked.
1 Adjust and make it close to
evaporator cover.
2.Change the temperature
controller.
3.Reduce them.
4.Put the refrigerator to suitable
place and make air circulate well.
5.Remove frost regularly.
6.Check or supplement refrigerant.
7.Change compressor.
8.Change new drying filter.
Compressor
runs
without
stop,
temperature
in refrigerator
is too low
1.The knob of temperature controller has
been set to
“
over cooling
”
position.
2.The contacting point of temperature
controller is adhered.
3.The temperature sensing probe of
controller is not placed well, and causes
maladjustment
4.Compressor efficiency reduced.
1.
Change the position to
moderate.
2. Repair or change.
3.
Adjust to suitable position,
normally contact tightly with
evaporator cover.
4.Change compressor.
PDF created with pdfFactory trial version
www.pdffactory.com