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What does a flashing H mean on the ATV21 and ATV212 drives?

Published date: 19 August 2019

Flashing H on the ATV21 and ATV212 drives.

Product Line:

Altivar 21 and 212


Flashing H and he drive resets

The flashing H means the drive controller is approaching an overheating fault.

Check the heat sink cooling on the drive.  If this is a S-Flex, check for anything that might restrict air flow near the top of the drives vent as well as checking the drive's cooling fan.

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