SPT
Compressor Start Circuit Failure
Unit displays lights but the compressor never starts; only fan and pump run.
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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
Defective compressor start relay, Open overload protector, Loose compressor terminals, Failed compressor winding
How to Fix / Troubleshooting
Safety first: Unplug the unit before accessing the compressor. Capacitors can hold charge; discharge safely if present.
- Inspect terminals: Remove the compressor cover and ensure all terminals are firmly connected.
- Check start relay: Remove and test or replace the start relay if it shows signs of burning or rattles when shaken.
- Overload protector: Test continuity through the overload device; replace if open when cool.
- If compressor still does not start: The compressor itself may be failed and will require replacement by a licensed refrigeration technician.
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Repair Difficulty
Professional Required
5/5
Required Part
Compressor Overload and Start Relay
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