Comfortmaker Overheating Electrical Component or Dust Burn-Off

Comfortmaker air conditioner emits a burning or electrical smell when running

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.

Possible Causes

Dust on electric heat strips (fan coils with heat), Overheating blower or fan motor, Loose electrical connections causing arcing, Failing capacitor or transformer

How to Fix / Troubleshooting

Safety: If you smell burning plastic or see smoke, turn off power immediately at the breaker and do not continue operation.

Steps:

Initial burn-off: A mild odor at first seasonal use may be dust burning off heat strips; it should dissipate quickly.
Inspect wiring: With power off, check Comfortmaker air handler and condenser for discolored or melted wires.
Check motors: Feel motors (carefully) for excessive heat and listen for unusual noise.
Do not ignore persistent odor: Call a technician to inspect and repair any overheating components.

Repair Difficulty

Hard 4/5

Required Part

Indoor Blower Motor and Electrical Wiring

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