Faults / Troubleshooting - Siemens FP120-Z1 Technical Manual

9 Faults / Troubleshooting

Symbol Status LED Description
OFF
ON
Status
No voltage at AUX 1 or AUX 2 The electronic fuse for overload and
Building Technologies
Fire Safety
If a fault cannot be eliminated with the help of the following information, please
contact the service engineer.
System not operational ●
Mains or battery fault
Possible cause
short-circuit has switched.
The electronic fuse resets automatically after the cause of the switch has been
eliminated.
Possible cause
With a voltage
<DC 20.5 V, batteries
are switched off
automatically
● Mains voltage
disconnected
● Battery voltage too low
● Batteries disconnected
Faults / Troubleshooting
Measures
● Check the mains voltage.
● Check fuse F1, see
document A6V10411051.
● Check the mains voltage.
● Check the battery voltage.
● Check the cabling.
● Check fuse F3, see
document A6V10411051.
Measures
Check the installation and cabling.
A6V10393194_d_en_--
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2018-11-05