A0177 fault in WEG CFW500 Drive

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A0177 alarm in WEG CFW500 Drive indicates Fan Replacement is required. This means the main heatsink cooling fan has exceeded its 50,000-hour design lifespan and should be swapped out. 

Cause:

  • The heatsink fan maximum number of operating hours has been reached.


Remedy:

Perform preventive fan replacement maintenance.

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