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Compressor Start Relay / Thermal Expansion Noise
Intermittent clicking or ticking noise, especially when the compressor starts or stops.
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Safety Warning
This repair may involve working with high voltage components or water connections. Always unplug the appliance before removing any panels.
If you are not confident in your ability to perform this repair safely, we strongly recommend contacting a professional technician.
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Possible Causes
Normal expansion and contraction of metal tubing, Failing compressor start relay, Loose relay or overload protector
How to Fix / Troubleshooting
Safety: Unplug the unit before accessing the compressor area.
- Determine if normal: Occasional soft clicks can be normal as the compressor starts and stops. Loud or rapid repeated clicking is not.
- Access relay: Remove the rear lower panel and the compressor terminal cover.
- Inspect relay: Check the start relay and overload protector for looseness or burn marks. Replace if damaged.
- Secure components: Ensure all components are firmly seated and not rattling against the compressor shell.
- Monitor: After reassembly, listen during several start/stop cycles. If rapid clicking persists, the compressor may be failing and requires professional evaluation.
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Repair Difficulty
Medium
3/5
Required Part
Compressor Start Relay
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