Thermador
Compressor Start Failure
Clicking sound from rear; compressor attempts to start but shuts off repeatedly; no cooling.
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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
Failed compressor start relay or PTC, Failed overload protector, Locked compressor, Low supply voltage
How to Fix / Troubleshooting
Safety: Unplug the unit before accessing the compressor and electrical components.
Steps:
- Check voltage: Verify the outlet provides correct voltage using a multimeter (qualified person).
- Inspect start device: Remove the start relay/overload assembly from the compressor. Look for burn marks or rattling pieces. Replace if damaged.
- Test compressor windings: Measure resistance between compressor terminals and to ground. Abnormal readings indicate a failed compressor requiring professional replacement.
- Monitor after replacement: If a new start device allows the compressor to run and cool, continue to monitor. If it still clicks off, the compressor may be locked.
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Repair Difficulty
Professional Required
5/5
Required Part
Compressor Start Relay / Overload
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