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SFD212EG4Y with ATV212HU22N4 is tripping on overheating fault.

Issue:
ATV212 is tripping on overheating fault (OH).

Product line:
Altivar ATV212 S-Flex enclosed.

Environment:
All models, all serial numbers.

Cause:
Cooling fan is not running or the ambient temp is to high for the drive.

Resolution:
Check to make sure the drives cooling fan is running.  Check the fan vents for any blockage that could be preventing the air from cooling the drive.
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