If your refrigerator and freezer are not getting cold even after the compressor has been replaced, there could be several potential causes for this issue. Here are a few possibilities to consider:
Insufficient time for cooling: After a compressor replacement, it may take some time for the refrigerator and freezer to reach their optimal cooling temperatures. Give it at least 24 hours to see if there is any improvement. If the temperature remains high after this period, further troubleshooting may be required.
Incorrect installation or connection: It's possible that the compressor replacement was not installed correctly or that there is a problem with the electrical connections. Double-check that the replacement compressor was installed according to the manufacturer's specifications and that all electrical connections are secure.
Refrigerant leak: A refrigerant leak can hinder the cooling process. If the system doesn't have enough refrigerant or if there is a leak, the refrigerator and freezer will struggle to cool properly. This issue would require the attention of a professional technician to locate and fix the leak, as well as recharge the refrigerant.
Faulty thermostat or temperature sensor: A malfunctioning thermostat or temperature sensor can prevent the refrigerator and freezer from reaching the desired temperatures. If the thermostat or sensor is not properly detecting the temperature, it may not trigger the compressor to run or turn off at the appropriate times. In this case, a technician would need to diagnose and replace the faulty component.
Other component issues: There could be other faulty components, such as the condenser fan motor, evaporator fan motor, or defrost timer, that are impacting the cooling performance. These components play vital roles in the cooling cycle of the refrigerator and freezer. A professional technician would be able to identify and address these issues.
Given the symptoms you described, such as the humming sound instead of the clicking sound, it indicates that the compressor may be running, but the cooling system is not functioning as expected. It is advisable to contact a qualified appliance repair technician to diagnose and address the specific problem with your refrigerator and freezer. They will have the expertise and tools necessary to pinpoint the exact cause and perform the necessary repairs.