F4
Whirlpool
Outdoor Fan Motor Fault
Whirlpool air conditioner shows F4 and may not operate the outdoor fan correctly.
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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 outdoor fan motor, seized fan blade, faulty fan capacitor, wiring issues, defective outdoor PCB fan driver
How to Fix / Troubleshooting
Safety: Shut off power at the breaker and verify the outdoor unit is de-energized.
Steps:
- Visual inspection: Check that the outdoor fan blade is intact and not obstructed by debris or ice.
- Spin test: With power off, spin the fan blade by hand. It should move freely. If stiff, the motor bearings may be failing.
- Capacitor check: Inspect the outdoor fan capacitor for bulging or leakage. Replace with the same rating if defective.
- Wiring: Verify all motor leads are firmly connected and not burnt.
If the fan still does not run and F4 persists, the fan motor or outdoor PCB likely needs replacement by a technician.
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Repair Difficulty
Hard
4/5
Required Part
Outdoor Fan Motor
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