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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 Freezer 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 

Freezer. 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 Freezer 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 

Freezer 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 Freezer, 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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