Zephyr PULSE HVLS Datasheet page 17

PULSE HVLS IN D UST RIA L FAN
Trouble shooting
The fan is running in wrong direction
→ The power phase sequence is not correct, change the wiring.
Popping noise comes from the fan
→ The fan blade popping noise may come from the blades are not tightened to the
Specified torque, cut off power at VFD controller and tighten the fan blade fastener
To the specified torque. If popping noise still occurs, please check the connection
Between fan blade and Hub. If the connection is correct, please slow down and switch
off the fan, then contact Zephyr or your local authorized distributor.
Fan is not working
→ Ensure that all the wires are securely connected
→ Ensure that the switch is in the run position
→ Verify that the power supply is adequate and functional
The motor makes a noise when increasing the speed of the fan
→ Audible high frequency noise is normal during fan operation, if it exceeds your
acceptable range , or you feel that the noise maybe a result of mechanical failure,
Please contact Zephyr or your local authorized distributor.
For any issues regarding the VFD controller, please check the trouble shooting
approach in the instruction manual according to the alarm message of VFD. If the error
code cannot be solved, please contact Zephyr or the local authorized distributor
The information contained in this document is the sole property of Zephyr Fans PTY LTD. Any reproduction in part or as a whole without the written permission of Zephyr Fans PTY LTD is prohibited.
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