Operation Manual

6 720 645 349 (2010/09)
60 | Troubleshooting
Fault 11
System configuration: new BUS device
New ISM detected. Power up all ISMs
simultaneously and start automatic system
configuration.
131
132
See display text.
1)
Fault 11
System configuration: new BUS device
New remote control detected. Check and
modify system configuration.
134
Fault 11
System configuration: new BUS device
New IPM detected. Check and modify system
configuration.
135
137
139
Fault 12
System configuration: BUS device missing
ISM1/ISM2not detected. Check connection.
170
171
See display text.
1)
Fault 12
System configuration: BUS device missing
Previously present IPM for cylinder
downstream of low loss header not detected.
Check identification.
172 See display text.
1)
Check and correct code.
With IPM isolated from power
supply.
Fault 12
System configuration: BUS device missing
IPM for cylinder downstream of low loss
header not detected. Check connection and
identification.
173 See display text.
1)
Fault 12
System configuration: BUS device missing
Remote control with identification 1 not
detected. Check connection and
identification.
175 See display text.
1)
Fault 12
System configuration: BUS device missing
IPM with identification 1 not detected. Check
connection and identification.
178
179
See display text.
1)
Fault 13
System configuration: BUS device changed
or replaced
Check system configuration for DHW or
start automatic system configuration.
157 See display text.
1)
Information displayed
(Æ items 1, 3 and 4 in Fig. 25)
Text Code Cause Remedy (by contractor)
1) The display text is shown at the BUS subscriber (e.g. remote control) that has identified the fault. The other BUS
subscribers will instead display the code that corresponds to the display text.