1. Thermostat Setting: When the desired temperature in the refrigerator or freezer is reached, the thermostat sensor detects it and sends a signal to the compressor to turn off. The compressor will remain off until the temperature rises above the set point, at which point it will turn on again to cool the space.
2. Door Opening: When the refrigerator or freezer door is opened, a door switch opens and breaks the electrical circuit to the compressor. This stops the compressor from running while the door is open, saving energy and helping to maintain the cold temperature inside.
3. Defrost Cycle: Refrigerators with automatic defrost feature go through periodic defrost cycles to prevent frost build-up on the evaporator coils. During the defrost cycle, the compressor turns off, and a heating element temporarily activates to melt away the frost. Once the defrost cycle is complete, the compressor resumes operation.
4. Mechanical Failure: Compressor failure is another reason for it to stop running. This can happen due to various mechanical issues, such as worn-out components, refrigerant leaks, or electrical faults. If the compressor fails, it needs to be repaired or replaced to restore the cooling function of the refrigerator or freezer.
5. Power Outage: In the event of a power outage, the compressor will stop running because there is no electrical supply to power it. Once power is restored, the compressor should automatically restart and resume its cooling operation.
These are the common reasons why a compressor stops running in a refrigeration system. If the compressor in your refrigerator or freezer stops working, check the thermostat setting, door switch, and listen for any unusual noises or signs of mechanical failure. If you're unable to identify and fix the problem, it's best to consult with a qualified technician to diagnose and repair the issue.
