Honeywell
Compressor Start Failure
Unit powers on but compressor does not start; only the fan runs and air is not cold.
Advertisements
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.
Advertisements
Possible Causes
Failed compressor, Faulty start capacitor (if used), Defective compressor relay on PCB, Overload protector tripped
How to Fix / Troubleshooting
Safety: Unplug the unit. Compressor circuits carry high voltage; testing should be done by qualified persons.
Steps:
- Listen for compressor: When cooling is selected, listen for a distinct hum or click from the compressor. No sound may indicate a control or relay issue.
- Check for overheat: If the compressor is very hot to the touch, allow it to cool for 30–60 minutes and try again. Persistent overheating indicates a deeper problem.
- Inspect PCB: Look for burnt compressor relay contacts or traces on the main board.
- Capacitor and compressor tests: A technician should test the compressor windings and any start/run capacitor. Replace the capacitor or compressor as needed.
Advertisements
Repair Difficulty
Professional Required
5/5
Advertisements