Manitowoc
Condenser Fan Control Fault
Ice maker's condenser fan runs constantly even when not making ice.
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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
Stuck fan relay on control board, Miswired fan motor, Control board logic fault, Shorted fan motor drawing constant power
How to Fix / Troubleshooting
Safety first: Disconnect power before accessing the control board or fan wiring.
Steps:
- Check wiring: Verify the condenser fan motor is wired according to the Manitowoc wiring diagram. Correct any miswiring.
- Inspect control board: Look for a stuck or welded fan relay on the main control board. Burn marks or melted plastic indicate failure.
- Test fan circuit: With a meter, confirm that the fan is not receiving power when the unit is idle. If it is, the control board relay is likely stuck.
Repair: Replace the main control board if the fan relay is stuck closed. Replace the fan motor if it is shorted or overheating.
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Repair Difficulty
Hard
4/5
Required Part
Main Control Board
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