Sonnen sonnenBackup-Box, Operating Instructions For Operators

Page: 16 / 20

8 | Troubleshooting
16 / 20 Operating instructions sonnenBackup-Box
8 Troubleshooting
Grid operation - no grid outage
Fault Possible causes Rectification
The electrical consumers in
the building are not supplied
with energy in grid opera-
tion. The mains cables (AC lines)
have not been correctly
connected. Contact your installer to
check the electrical wiring.
The F1.B miniature circuit
breaker in the Backup-Box is
switched off. Contact your installer to
check if the F1.B miniature
circuit breaker is switched
on.
Backup operation - grid outage
Fault Possible causes Rectification
The Backup-Box is not sup-
plying electrical energy to
the consumers connected
to phase L1. The batteries of the storage
system have discharged so
much that further dischar-
ging would lead to a deep
discharge state and there-
fore damage the batteries. In this case the only thing to
do is wait until the grid out-
age passes, the public elec-
trical grid once again starts
supplying electrical energy
and the Backup-Box auto-
matically switched to grid
operation.
The F1.B miniature circuit
breaker in the Backup-Box is
switched off. Contact your installer to
check if the F1.B miniature
circuit breaker is switched
on.
The storage system is
switched off. Switch on the storage sys-
tem.
Consumption is greater than
the specific nominal power
of the Backup-Box . Switch off electrical con-
sumers or reduce their
power consumption.
Only connect electrical
consumers to phase L1 when
they have a power con-
sumption that does not ex-
ceed the nominal power of
the Backup-Box .
Only connect electrical
consumers to phase L1 when
they have a power con-
sumption that does not ex-
ceed the maximum power
of the Backup-Box when
switched on.