American Standard
Indoor Blower Non-Operation
American Standard air conditioner outdoor fan runs but indoor blower does not
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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
Failed blower motor, Faulty blower relay on control board, Open blower door safety switch, Tripped internal motor overload
How to Fix / Troubleshooting
Safety first: Turn off power to the indoor unit before opening the blower compartment.
- Check blower door switch: Ensure the blower door is properly installed and depressing the safety switch. Tape should not be used as a permanent fix.
- Inspect motor and capacitor (PSC motors): Look for a separate blower capacitor and replace if bulged or leaking. Check motor wiring for burns or loose connections.
- Spin blower wheel: If the wheel spins freely but the motor does not start, the motor or control board may be faulty.
- Professional testing: A technician should test for correct voltage at the motor leads when there is a call for fan.
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Repair Difficulty
Hard
4/5
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