Mitsubishi Electric
Electrical Overheating or Component Failure
Chemical or burning 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
Overheating fan motor, failing compressor, burnt wiring or connectors, failing main PCB components
How to Fix / Troubleshooting
Safety: Immediately turn off and unplug the unit. Do not continue to operate it until inspected.
Steps:
- Visual inspection: After the unit cools, remove covers and inspect for burnt wiring, melted connectors, or scorched PCB areas.
- Fan motor: Check for discoloration or burnt smell near the fan motor. Replace the indoor fan motor if overheated.
- PCB: If the smell comes from the control area and you see burnt components, replace the main control PCB.
- Technician: If the compressor area smells burnt, a qualified technician should inspect and test the compressor and wiring.
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Repair Difficulty
Professional Required
5/5
Required Part
Indoor Fan Motor / Main Control PCB
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