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My Smart UPS Modular Ultra has error code 38B1, 38AB, 38A9 or 38B4

Issue:

Product Line:

Smart UPS Modular Ultra

Environment:

All models, all serial numbers

Resolution:

The UPS firmware has been improved to eliminate false detection of these alarms.

Please upgrade the UPS to at least firmware 17.0, then clear all alarms if needed.

In order to upgrade the UPS properly, please use the following FAQ - https://www.apc.com/us/en/faqs/FAQ000261838/

If the alarm returns after upgrading the firmware, please contact support.

Released for: Schneider Electric Belgium

Attachment(s)

SRYL1225UPS_17-0.zip

[4.03 MB]

Published on:11/3/2025Last Modified on:22/4/2026

Range:

Smart-UPS Modular Ultra Accessories

APC Smart-UPS Modular Ultra

Range:

Smart-UPS Modular Ultra Accessories

APC Smart-UPS Modular Ultra

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