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537
High speed differences detected between the door fans
Bearing failure of a fan or fan blocked, door fans will not function until the next DC reset
Check the setup menu STATE FAN to determine which fans are affected
Cause: Fan blocked
Remedy: Make sure fan is free of any obstructions
Cause: Fan not connected
Remedy: Check plug connection
Cause: Ambient temperature too high
Remedy: Increase supply air intake
Cause: Fan defective
Remedy: Replace fan
Cause: Measurement error in Snowball PC board
Remedy: Replace Snowball
540
Fan controller overcurrent detected
Cause: Fan blocked
Remedy: Make sure fan is free of any obstructions
Cause: Fan not connected
Remedy: Check plug connection
Cause: Ambient temperature too high
Remedy: Increase supply air intake
Cause: Fan defective
Remedy: Replace fan
Cause: Measurement error in Snowball PC board
Remedy: Replace Snowball
541
Communications error with fan controller
Cause: Communication error in the fan controller - Check if the red LED on the Snow-
ball is on
Remedy: if LED lights up red -> replace fan controller
542
Watchdog reset caused by fan controller
Cause: One-time occurrence
Remedy: Remedied automatically
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