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Common fault handling of freezer

Common fault handling of freezer

1. Trouble phenomenon: The power indicator light is on, the compressor is not working normally, there is only a buzzing sound.

Cause: The power supply voltage is too low and exceeds the specified lower limit.

Treatment method: stop immediately, and restart after the voltage returns to normal.

 

2. Trouble phenomenon: The freezer compressor starts, stops within one minute, waits a few minutes to restart, and so on.

Cause: The power supply voltage is too high and exceeds the specified upper limit.

Treatment method: stop immediately, and restart after the voltage returns to normal.


3. Trouble phenomenon: The compressor runs for a long time, and the evaporator surface is free of frost.

Cause: There is a leak in the pipeline and the refrigerant leaks. The pipeline is blocked.

Treatment method: send it to the maintenance department for overhaul.

 

4. Trouble phenomenon: There is frost on the surface of the evaporator, and the compressor runs continuously.

Causes: Too many times of opening the door, or poor heat dissipation of the condenser, poor ventilation conditions; malfunction of the thermostat or the temperature sensing bulb detached from the evaporator, resulting in too thick frost on the evaporator.

Treatment method: In addition to timely defrosting in this situation, we also need to deal with it in a targeted manner. For example: the condenser heat dissipation is not good, and the dust on the condenser and compressor can be cleaned when the ventilation condition is not good; and when the temperature control is encountered If the evaporator fails or the temperature sensing bulb is detached from the evaporator, it must be sent to the maintenance department for repair.

 

5. Fault phenomenon: the compressor does not work.

Cause: The fuse on the power supply is blown; the control circuit is faulty; the temperature of the temperature controller is weak. The ambient temperature is too low.

Treatment method: but the fuse must be replaced when the fuse is blown; the control circuit failure should be repaired by maintenance personnel. If the temperature is not up to the point, you only need to adjust the temperature.

 

7. If the freezer has not passed the warranty period, it is recommended to consult the corresponding after-sales service if there is a malfunction.


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