Payne outdoor unit hums but the fan does not spin; compressor may or may not start.

Danger: High voltage present. Turn off power at the disconnect and breaker before servicing. Do not stick objects into the fan grille.

• 1. Visual check: With power OFF, try spinning the fan blade by hand using a stick or insulated tool. It should spin freely. If it is stiff or grinding, the motor bearings are likely bad.
• 2. Inspect capacitor: Remove the service panel and locate the dual run capacitor (often a metal can with three terminals labeled C, FAN, HERM). If it is bulged, rusted, or leaking oil, it should be replaced.
• 3. Tighten fan blade: Ensure the fan blade set screw is tight on the motor shaft and the blade is not slipping.
• 4. Replace parts (advanced DIY): If comfortable and with power OFF, you can replace the fan motor and capacitor with exact Payne-specified parts, matching microfarads and voltage ratings. Take photos of wiring before removal.
• 5. Test operation: Restore power and run the system. If the fan still does not start, call a technician to check for control board or contactor issues.