NewAir
Overheating Electrical Component
Burning or electrical smell when the unit is running.
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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
Overheating motor windings, failing run capacitor, loose electrical connections, burned control board components
How to Fix / Troubleshooting
Safety: Immediately turn off and unplug the unit if you smell burning. Do not continue to operate until the cause is found.
Steps:
- Visual inspection: Remove the electrical cover and inspect the main control PCB, capacitors, and wiring for burn marks, melted insulation, or discoloration.
- Check connections: Tighten any loose spade connectors on the compressor, fan motor, and capacitor terminals.
- Capacitor check: Replace any bulged or leaking run capacitors.
- Motor inspection: If the smell is strongest near a motor, replace the indoor fan motor or condenser fan motor as appropriate.
- Board replacement: If the control board is burned, replace the main control PCB before using the unit again.
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Repair Difficulty
Hard
4/5
Required Part
Main Control PCB
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