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Maintenance Service and Trouble Shooting
position is to be used for fast freezing or continuous running, its
temperature for power off is too low, therefore, the compressor won't stop
and the temperature in the appliance becomes lower and lower .
b) Inspection method: check the temperature control knob to see
whether it is set in the position "coldest".
2) Thermostat is malfunctioning and makes the compressor running
continuously
Analysis of Trouble
When the thermostat doesn't work normally, it will make the compressor
run continuously, and hence very low temperature will be achieved in the
appliance. The fault is generally due to the fact that the contacts of the
thermostat cannot be released.
Remedy
Dismantle the thermostat and make a through checkup, if it is totally out
of functioning, replace it with a new one.
3) evaporation temperature is too high in refrigerating system, resulting
in lower refrigerating capacity and hence continuous running of compressor
Analysis of Trouble
Leakage of refrigerant and clogging in a refrigerating system will directly
affect its refrigerating capacity. Due to the reduction in its refrigerating
capacity, the appliance temperature cannot reach its rated value, the
thermostat won't work, thus the compressor runs continuously. When the
evaporation temperature in the system is too high, the temperature sensing
agent in the temperature sensor is also hotter, therefore, the thermostat is
unable to cut off the power supply to the compressor and stop it.
Remedy
If it has been found that the refrigerant in the system is insufficient in
quantity, recharge it with refrigerant. In case clogging occurs, disassemble
the part where it is blocked. If the evaporation temperature is too high,
settle this problem with an appropriate quantity of refrigerant.
4) No stoppage of compressor due to damaged heat-insulation layer
inside case body and/or door seal
Analysis of Trouble
When the heat-insulation layer inside the case body deteriorates or the
door seal is not closely touches the door frame, the temperature in the
appliance will rise and makes the compressor running continuously.
Remedy
Check the heat-insulation layer for its damaged parts, repair it to
improve its heat-insulation property. If the door has deformed or the door
seal is not tightly sealed against the case body, repair them, respectively.
5) Too much food is placed in the appliance, or is placed too densely,
resulting in poor ventilation or poor conditions for temperature sensing, and
hence no stoppage of the compressor.
6) Too high ambient temperature, poorer ventilation and heat
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