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USER’S GUIDE
Battery Management System
26
Monitor Relay
Stuck
A relay is stuck in the master
unit.
Reset the unit using the recessed
reset button on the back of the
master unit. If problem persists,
contact APC Customer Support at
the phone number located at the end
of this manual.
Communication One or more units are not
reporting to the master unit.
Problem: The system cannot
perform operations on all configured
batteries.
Response: Check that the cables on
the expansion ports are in place and
that the DIP switches are set
correctly.
Category Details Diagnostics