TCL
Overheating Electrical Component / Insulation Burn
Burning or electrical smell from indoor or outdoor 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
Overheated wiring connection on TCL PCB, Failing fan motor, Shorted capacitor, Debris contacting heating elements (for some models with electric heat)
How to Fix / Troubleshooting
Safety first: Immediately turn OFF the unit and switch OFF the breaker. Do not continue to operate.
- Step 1 – Visual inspection: After cooling, open the unit and look for burnt wires, discolored connectors, or melted plastic.
- Step 2 – Check capacitors: Bulging or leaking capacitors should be replaced.
- Step 3 – Tighten connections: Tighten any loose terminal screws on the PCB and terminal blocks.
- Step 4 – Professional repair: If the source is not obvious, have a technician perform a detailed inspection and replace any damaged components.
Warning: A burning smell can precede fire; do not ignore it.
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Repair Difficulty
Hard
4/5
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