Friedrich
Overheating Electrical Component
Burning or electrical smell from the unit
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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
Dust burning off heating elements (heat models), failing motor windings, overheated wiring or connectors, failing control board component
How to Fix / Troubleshooting
Safety: Immediately turn OFF and unplug the unit if you smell burning plastic or see smoke. Do not continue to operate.
Steps:
- Initial check: For first-time use of electric heat, a slight burning dust smell can be normal and should dissipate within 30 minutes. If it persists or is strong, proceed below.
- Inspect wiring: With power disconnected, remove covers and inspect wiring harnesses, connectors, and the control board for signs of melting, discoloration, or charring.
- Check motors: Smell near the indoor and outdoor fan motors. A strong burnt odor may indicate a failing motor that should be replaced.
- Board replacement: If the control board shows burnt components, replace it with the correct Friedrich board.
- Do not ignore: If you cannot locate the source, do not use the unit until it has been inspected by a qualified technician.
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Repair Difficulty
Hard
4/5
Required Part
Main Control Board
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