Why Is My Refrigerator Making a Clicking Noise?
- Appliance:
- Refrigerators
Short answer
A repeating clicking noise from a refrigerator is most often the compressor's start relay trying (and failing) to start the compressor, or the defrost timer switching stages. Occasional single clicks during normal operation are usually harmless thermostat or defrost-cycle switching.
Error and fault codes can mean different things depending on the brand, model and production year. Always confirm the meaning in the official user manual for your specific model.
What it means
Symptoms you may notice
- Repeated clicking every few seconds
- Fridge is warmer than usual or not cooling
- Clicking comes from the back or bottom of the unit
Possible causes
Listed from most to least common. This is not a confirmed diagnosis.
- Compressor start relay is cycling on its overload protectorcommon
- Defrost timer or thermostat switching normally (harmless)common
- Voltage fluctuation preventing the compressor from startingpossible
Safe checks to try first
These checks do not require opening the appliance or touching electrical parts.
- 1
Listen and time it
Note whether the clicking is a single occasional click (likely normal) or a rapid repeating click every few seconds (likely a start issue).
- 2
Check ventilation
Make sure the space around and behind the fridge isn't blocked, which can cause the compressor to overheat and cut out.
When to stop using the appliance
When to call a professional
Frequently asked questions
Is a clicking fridge always broken?
No. Occasional single clicks from thermostats or defrost timers are normal. Rapid repeated clicking paired with poor cooling is the sign to watch for.
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