Introduction
The refrigerator start relay is a small component in the refrigerator’s circuit board which helps regulate the flow of electricity to the compressor motor. It is responsible for starting the compressor when the refrigerator needs to cool down. When it malfunctions, it can cause the refrigerator to not cool properly or even stop cooling altogether. Knowing how to tell if the refrigerator start relay is bad is important for diagnosing the problem and getting your refrigerator back up and running again.
Overview of Refrigerator Start Relay
The refrigerator start relay is a small electronic device that is used to control the flow of electricity to the compressor motor. The start relay works by activating the compressor motor when the refrigerator needs to cool down. When the compressor motor is activated, it pulls in the refrigerant from the evaporator coils and circulates it through the system to cool down the air inside the refrigerator. When the desired temperature is reached, the start relay deactivates the compressor motor to conserve energy.
Symptoms of a Bad Start Relay
If the start relay is bad, the refrigerator will not be able to cool down properly or may not cool at all. Other signs of a bad start relay include excessive noise from the compressor, a humming sound from the compressor, or an unusually warm interior. If any of these symptoms are present, it is likely that the start relay is malfunctioning and needs to be replaced.
Checking Electrical Connections
To determine if the start relay is bad, the first step is to check the electrical connections. Make sure that the power cord is securely plugged into the wall outlet and that all connections between the refrigerator and the wall outlet are secure. If any of the connections are loose or damaged, they should be tightened or replaced before proceeding.
Listening for Clicking Sound
When the refrigerator is switched on, it should make a clicking sound as the start relay engages the compressor motor. If no sound is heard, then it is likely that the start relay is bad and needs to be replaced. Additionally, if the clicking sound is heard but the compressor does not start, then it could also indicate a bad start relay.
Inspecting Start Relay
Once it has been determined that the start relay is the source of the problem, it is important to inspect the relay for signs of corrosion or other damage. Corrosion can be identified by white or green discoloration around the relay’s terminals. If any corrosion is found, the relay should be replaced immediately.
Testing Start Relay with an Ohmmeter
If there are no visible signs of corrosion or damage, the start relay can be tested with an ohmmeter. To test the start relay, disconnect the power cord and remove the relay from the circuit board. Set the ohmmeter to the lowest setting and place one probe on each terminal of the start relay. If the ohmmeter reads infinite resistance, then the start relay is bad and needs to be replaced.
Looking for Signs of Overheating
Another symptom of a bad start relay is overheating. If the start relay is malfunctioning, it can cause the compressor motor to overheat and shut off. To identify this issue, check the surrounding area for any signs of heat or smoke. If any signs of overheating are found, the start relay should be replaced immediately.
Replacing Start Relay
If none of the above reveal a problem, then the start relay should be replaced. Before replacing the start relay, unplug the power cord and turn off the main power switch. Once the old start relay has been removed, install the new one in its place and reconnect the power cord. After the start relay is replaced, the refrigerator should be tested to ensure that it is working properly.
Conclusion
The refrigerator start relay is a crucial component in the refrigerator’s circuit board and is responsible for controlling the flow of electricity to the compressor motor. Knowing how to tell if the refrigerator start relay is bad is important for diagnosing the problem and getting your refrigerator back up and running again. By checking electrical connections, listening for a clicking sound, inspecting the start relay, testing with an ohmmeter, looking for signs of overheating, and replacing the start relay, you can quickly and easily determine if the start relay is bad and replace it if necessary.
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