18
If the MTBS does not operate normally, consult the following table.
If the problem cannot be solved, contact the LEGRAND Technical Service Assistance.
PROBLEM
SOURCE OF THE PROBLEM
SOLUTION
Orange lamp
is not lit
No mains
Verify if the external circuit breaker
has tripped. In this case, reset it.
Otherwise contact
a qualified electrician.
The input power cord
connected to the input
socket of the MTBS [2] is not
connected properly to the
mains socket
Connect it to the mains socket
Green lamp
of the UPS is not lit
UPS has no output
Refer to the user manual of the UPS
The input and output of the
UPS are not connected to the
MTBS properly
Connect them to the MTBS properly
The external circuit
breaker has tripped
Overcurrent in the MTBS load
sockets [5-6]
Reduce the number of loads
connected
5 Troubleshooting
Summary of Contents for 3 109 53
Page 1: ...Part LE09522AA 08 16 01 GF 3 109 53 Maintenance Bypass Switch Installation Manual...
Page 2: ...2 ENGLISH 3 FR EN 3 109 53 Maintenance Bypass Switch...
Page 9: ...3 109 53 Maintenance Bypass Switch 9 Installation Manual 3 3 Package content 3 Installation...
Page 10: ...10 3 Installation 3 4 Rack Mount Configuration Step 1 Step 2 Step 3...