8’ - 24’ POWERFOILPLUS™, POWERFOIL™, & WICKERBILL FANS
WWW.BIGASSFANS.COM ©2010 DELTA T CORP. DBA BIG ASS FAN ALL RIGHTS RESERVED
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WWW.BIGASSFANS.COM ©2010 DELTA T CORP. DBA BIG ASS FAN ALL RIGHTS RESERVED
8’ - 24’ POWERFOILPLUS™, POWERFOIL™, & WICKERBILL FANS
General Troubleshooting
The Fan Turning In The Wrong Direction (Single Fan Controller)
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The “3 Position Switch,” located on the front of the control box, controls the direction of the fan’s rotation. The fan must be rotating
counter-clockwise (when viewed from the floor) to be effective. If the fan is not rotating in this direction, adjust the “3 Position
Switch.”
The Fan Turning In The Wrong Direction (Multi-Fan Controller)
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Turn the “3 Position Switch” to the OFF position. Wait for the fans to come to a complete stop. De-energize the controller and
associated AC supply circuit.
Controller will display “F004” momentarily, indicating an undervoltage fault. Wait three
minutes for internal DC bus voltage to fall to a safe level (darkened display LEDs are not an indication of safe voltage
levels).
Refer to diagram on p. 60 to reverse phase rotations. (Note:
Switching two leads on the AC supply side of the fan controller
will not reverse fan rotations).
Popping Noise Is Coming From The Fan
Airfoil popping comes from airfoils that are not tightened to the specified torque (see torque chart p. 5).
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Switch off power at service panel and lock service disconnecting means (if it cannot be locked, fasten a prominent warning device).
Tighten airfoil fasteners to specified torque. If popping still occurs verify that the airfoils are not contacting each other. If the airfoils
are contacting each other, please contact Big Ass Fans Customer Service at 1-877-BIG-FANS.
The Fan Is Not Starting
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Make sure that all wires are securely connected.
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Make sure the “Disconnect Switch” and “3 Position Switch” are in the ON position.
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Verify that supply power is adequate and functional.
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Contact Customer Service at 1-877-BIG-FANS.
The Variable Frequency Drive (VFD) Generates Radio Frequency (RF) Noise
VFDs generate radio frequency noise in many ways, but this noise can be prevented by using the proper wiring practices outlined in the
“Electrical Installation” section (p. 27).
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Do not run your VFD and sensitive equipment on the same power line.
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You need to install shielded cables, run leads in grounded metallic conduit, or use appropriate sized 4 conductor shielded cable for
motor leads.
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Make sure that the motor’s ground/ shield lead are terminated to the VFD’s ground terminal, not the controller’s ground lug.
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Ensure proper grounding at the motor, controller, and from the controller to the utility.
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Contact Customer Service at 1-877-BIG-FANS.
The Motor Makes Noise When You Speed Up The Fan
Audible high frequency noise is normal during fan operation. If this is less than desirable, or you feel that the noise may be a result of
mechanical failure, please contact us at 1-877-BIG-FANS.
Troubleshooting
WARNING: Risk of fire, electric shock, or injury to persons during cleaning and user-maintenance! Disconnect the appliance
from the power supply before servicing.
WARNING: Before servicing or cleaning unit, switch power off at service panel and lock the service disconnecting means to
prevent power from being switched on accidentally. When the service disconnecting means cannot be locked, securely fasten
a prominent warning device (such as a tag) to the service panel.
WARNING: When service or replacement of a component in the fan requires the removal or disconnection of a safety device,
the safety device is to be reinstalled or remounted as previously installed.
