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
refrigerator 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 refrigerator. 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 refrigerator
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 refrigerator 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 refrigerator, or is placed too densely, resulting in poor
ventilation or poor conditions for temperature sensing, and hence no stoppage of the
compressor.
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