106 | Help in the event of faults
Fault message
ENGLISH
AC CONNECTION
AC CONNECTION PE
GRID FREQUENCY
Bosch BPT-S 3 / 3.68 / 4 / 4.6 | Operating manual
LED status indicator
Right LED red
Right LED red
Right LED red
Possible cause
Faulty grid connection
Mains plug installed
incorrectly, (L and N
interchanged)
Wrong grid type
Protective earth (PE)
not connected
correctly
Mains plug installed
incorrectly (L, N or PE
interchanged)
Faulty grid connection
Faulty PE connection
Wrong grid type
Protective earth (PE)
not connected
correctly
Grid frequency is
outside tolerance
English
Possible fault
rectification
Check installation and
connector pin
assignment
(Connecting the
network cable (AC
cable), p. 65)
Check grid type
(Preparing the AC
connection, p. 62)
Check installation and
connector pin
assignment
Check installation and
connector pin
assignment
(Connecting the
network cable (AC
cable), p. 65)
Check grid type
(Preparing the AC
connection, p. 62)
Check grid frequency,
if necessary contact
the grid operator
Bosch Power Tec GmbH