24
REFERENCE
TROUBLESHOOTING
Symptom
Possible Solution
FAN WILL NOT START
• Verify that the fan’s circuit breaker has power and that it is on.
• Verify that the VFD’s receptacle has power and that the VFD is plugged in.
• Check for secured plug connections. Each connection should be checked to ensure
they are fully engaged.
• Inspect for loose wiring connections. Each termination should be checked to be
sure they are firmly tightened.
IF THE ABOVE IS
VERIFIED AS WITHIN
SPECIFICATION
• Cycle the power to the VFD by flipping the circuit breaker off for a minimum of
three minutes. Flip the circuit breaker back on and check the fan’s operation.
MOTOR IS PULLING
EXESSIVELY HIGH AMPS
• Make sure the motor voltage is a match for the supply voltage.
• Make sure that correctly sized fan blades have been installed.
FAN IS “SWINGING” AS IT
RUNS
• Check for correct fan blade installation. Be sure that all blades are the same size
and that all blades have been properly installed and tightened.
• Ensure all guy wires are tensioned properly and that the downrod is plumb.
• Check for improper incoming air discharge. Make sure that no discharge is
blowing directly on the fan.
A FAN BLADE APPEARS TO
BE ‘SAGGING’
• Make sure that the ‘sagging’ blade has been properly tightened.
For situations beyond the scope of this guide, please call our Technical Service Department at 1-844-593-FANS (3267).
Summary of Contents for DDI
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