Table of Contents
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If the MTBS does not operate normally, consult the following table.
If the problem cannot be solved, contact the LEGRAND Technical Service Assistance.
PROBLEM
Orange lamp
is not lit
Green lamp
of the UPS is not lit
The external circuit
breaker has tripped
18
SOURCE OF THE PROBLEM
No mains
The input power cord
connected to the input
socket of the MTBS [2] is not
connected properly to the
mains socket
UPS has no output
The input and output of the
UPS are not connected to the
MTBS properly
Overcurrent in the MTBS load
sockets [5-6]
5 Troubleshooting
SOLUTION
Verify if the external circuit breaker
has tripped. In this case, reset it.
Otherwise contact
a qualified electrician.
Connect it to the mains socket
Refer to the user manual of the UPS
Connect them to the MTBS properly
Reduce the number of loads
connected
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