Armstrong Air
Overheating Electrical Component
Burning or electrical smell from indoor or outdoor unit during cooling
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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 blower or condenser fan motor, Failing capacitor, Loose high-voltage connection, Shorted wiring
How to Fix / Troubleshooting
Safety first: Immediately turn off power at the breaker and disconnect. Do not continue operating the system if you smell burning or see smoke.
Steps:
- 1. Visual inspection: After power is off and components have cooled, open the access panels and look for burned wires, melted insulation, or scorched components.
- 2. Check motors: Smell near the blower and condenser fan motors. A strong burnt odor may indicate winding failure.
- 3. Inspect capacitors: Look for bulging or leaking capacitors and replace if found.
- 4. Tighten connections: With power off, tighten all screw and lug connections at the contactor, disconnect, and indoor terminal blocks.
- 5. Do not restore power until the source is identified: If you cannot clearly identify and correct the issue, contact a qualified HVAC technician or electrician.
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Repair Difficulty
Hard
4/5
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