-------Internal training document for Haier service provider. External disclosure is prohibited --- Classification
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sealing strip and the door to make air enter the freezer;
Second, goods placed by the user into the freezer contains water, which causes that water flows to the
sealing strip and the door gets frozen and cannot be opened. In this case, please use a tool to open the
door.
13.2 Common Q&A
Question
Reason Analysis
Maintenance Measures
1. The high
temperature
compressor
cannot start.
1. Power switch or fuse failure
Use the multi-meter to measure the switch or fuse
resistance and check if the switch is damaged. If so,
replace the fuse or power switch.
2. The plug-in part of the cabin is
damaged.
Check if the plug-in joint f the cabin circuit is damaged or
the harness falls down. If so, replace the relevant harness.
3. Line contact failure
Check if the power harness is connected improperly or
disconnected. If so, repair it until it is connected normally.
4.Display panel and control
panel circuit failure
Use the multi-meter to measure the circuit resistance and
check if the harness has a short circuit or open circuit
failure. If so, replace the harness if it is impossible to
maintain it.
5. Relay, starting capacity or
thermal protector damage
Check the relay, capacitance or heat protector/. Check if
any electric part is burnt. If so, replace the electric part.
6. Compressor failure
On condition that other parts are switched on normally,
check if the connection plug of the compressor is normal.
Meanwhile, observe the surface temperature and
abnormal noise of the compressor. If the compressor does
not heat up or the makes abnormal noise, it is damaged
and shall be replaced; when it is changed, the oil
separator and the dry filter shall also be changed at the
same time.
7. Too low voltage of the user
Check if the display panel voltage of the product is
covered in the rated voltage scale (220V±10%).
Meanwhile, use a multi-meter to measure and check if the
voltage exceeds the scope when the power is switched on
for operation. If the voltage is too low or too high, please
prepare a stable voltage supercharger.
2. The low
temperature
compressor
cannot start.
1. The same reason for starting
failure of the high temperature
compressor
On condition that other parts are switched on normally,
check if the connection plug of the compressor is normal.
Meanwhile, observe the surface temperature and
abnormal noise of the compressor. If the compressor does
not heat up or the makes abnormal noise, it is damaged
and shall be replaced; when it is changed, the oil
separator and the dry filter shall also be changed at the
same time.
2. Pressure switch failure
Use the multi-meter to measure the resistance of the
circuit and check if the harness has a short circuit or open
circuit failure. Then, replace the harness if it is impossible
to maintain it.
3.
Poor
refrigeration
performance of high temperature
compressor
If the low temperature compressor fails to start after the
high temperature compressor is started for 10min., it
means the high temperature compressor has poor
refrigeration performance. In this case, check if the circuit
and pipeline of the high temperature system are welded
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