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12
Fan system troubleshooting
Issue Solution(s)
Fan will not run and makes no sound.
Check power cord, extension cord, switches, and circuit breaker.
• Reconnect power or extension cord.
• Reset breaker.
Fan will not run and makes humming
sound.
Blade is in contact with shroud.
Re-center blade hub.
Motor stall (will not turn by hand).
Replace motor.
Breaker trips or fuse blows when fan
starts.
Motor stall.
Replace motor.
Check power source. Refer to page 2 for electrical requirements.
Upgrade power supply.
Extension cord gauge is too small.
Replace with heavier cord.
Motor overheats, shuts o, and restarts
several minutes later.
Extension cord gauge is too small.
Replace with heavier cord.
Inlet air is obstructed or too close to wall.
Provide minimum 3 ft (0.9 m) inlet clearance.
Faulty motor.
Replace motor.
Fan motor will not run and switch makes
soft clicking sound.
Ensure switch is making good contact.
Replace switch if needed.
Fan blade does not turn and cooler
makes squealing sound.
Motor stall (will not turn by hand).
Replace motor.
Fan will not reach speed but turns and
makes humming sound.
Check capacitor (where visible) and motor electrical connections.
Replace capacitor or motor.
Extension cord gauge is too small.
Replace with heavier cord.
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