Issue:

My Smart UPS Modular Ultra is has an "AC tray mismatch" alarm

Product Line:

Smart UPS Modular Ultra

Environment:

All models, all serial numbers

Resolution:

In order to try and clear the alarm, please perform a complete system power cycle to the UPS.

Refer to the following FAQ for the proper steps depending on your system configuration - https://www.apc.com/us/en/faqs/FAQ000274118/

If the alarm is still there after a power cycle, please contact the CCC.

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