[Maintenance of fresh-keeping cabinets] Analysis and treatment of five common faults of fresh-keeping cabinets
1. Stop within minutes, restart after a few minutes, and so on.
Reason: The power supply voltage is too high, exceeding the upper limit.
Treatment: stop immediately, and restart after the voltage returns to normal.
2. The power indicator of the fresh-keeping cabinet is on, the compressor of the fresh-keeping cabinet is not working normally, and there is only a humming sound.
Cause: The power supply voltage is too low, exceeding the specified lower limit.
Treatment method: stop immediately and restart after the voltage returns to normal.
TIPS: If the local voltage fluctuation often exceeds the specified range, an AC voltage stabilizer of 1KLA or more must be installed.
3. The compressor of the fresh-keeping cabinet runs for a long time, and the surface of the evaporator is frost-free.
Cause: There is a leak in the pipeline, and the refrigerant leaks. Line is blocked.
Treatment: Send it to the maintenance department for overhaul.
4. There is frost on the surface of the evaporator of the fresh-keeping cabinet, and the compressor of the fresh-keeping cabinet runs continuously.
Reasons: Too many door openings, poor heat dissipation of the condenser, and poor ventilation; failure of the thermostat or the separation of the temperature sensor from the evaporator, resulting in too thick frost on the evaporator.
Treatment: In addition to defrosting in time. If the heat dissipation of the condenser is not good and the ventilation is not good, the dust on the condenser and the compressor of the fresh-keeping cabinet can be cleaned up; if the temperature controller fails or the temperature sensor bag is separated from the evaporator, it must be sent to the maintenance department for maintenance.
5. The compressor of the fresh-keeping cabinet does not work.
Reason: The fuse on the power supply is blown (the power indicator light is off); the control circuit is faulty (the power indicator light is on); the ambient temperature of the thermostat is too low.
Treatment: But when the fuse is blown, the fuse must be replaced; if the control circuit is faulty (the power indicator light is on), please ask the maintenance personnel to repair it. If the temperature is not reached, you just need to adjust the temperature.
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