BIG ASS FANS 2025 Manuel D'installation page 37

Fan status LED troubleshooting
LED code
Over Temperature
Output Device Failure
Internal Communication
Error
DC Buss Undervoltage
DC Buss Over Voltage
Motor Overload/Thermal
Trip
Current Limit/Short Circuit
Motor Stall
Run Enable Jumper Open
Description/Possible cause(s)
The fan drive electronics have exceeded
safe operating temperature limits.
The fan drive electronics have failed or
output phase loss has occurred.
The main fan drive has failed to respond
to the command source (daughterboard,
etc.).
Buss voltage has fallen below 255 VDC.
Buss voltage has exceeded 373 VDC.
Thermal motor overload protection has
been activated.
The hardware current limit has been
reached. A severe overload or short circuit
condition exists on the fan drive output.
The fan failed to accelerate to the target
RPM within one minute of startup.
The run enable circuit is open and motor
operation is disabled.
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Possible solution(s)
The fan will shut down for five
minutes and then attempt to restart
two times. If the fan does not restart
after two attempts, reset power to
the fan. If the fan still does not restart,
contact Customer Service.
The fan will shut down and will not
attempt to restart. Contact Customer
Service.
Make sure the blue wire and the
yellow wire on the controller input
cable are wired together. See
the Wiring Diagrams & Electrical
Guidelines section for wiring details.
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