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Fan Blade Jammed by Foreign Object or Bearing Seizure

Likely causes

Foreign object (leaf, plastic, etc.) caught in fan

Check: Disconnect power and remove foreign object

What to do: Disconnect power and remove foreign object → After removing, turn blade by hand (still stiff = bearing seized) → If bearing seized, replace fan motor → Check blade for deformation and replace if needed → Verify high-side pressure normalizes after repair

Fan motor bearing seized

Check: After removing, turn blade by hand (still stiff = bearing seized)

What to do: After removing, turn blade by hand (still stiff = bearing seized) → If bearing seized, replace fan motor → Check blade for deformation and replace if needed → Verify high-side pressure normalizes after repair

Deformed fan blade contacting casing

Check: If bearing seized, replace fan motor

What to do: If bearing seized, replace fan motor → Check blade for deformation and replace if needed → Verify high-side pressure normalizes after repair

Field tip

Fan blade is mechanically locked. Remove foreign object or replace the fan motor. Never reach into a running fan. Always disconnect power first.

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