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8
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.
Check capacitor.
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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