Operating instructions

Fault display layout
A Fault display
B Fault symbol
C Fault number
D Fault code
The red fault indicator flashes for
every fault.
A fault in the burner control unit
causes the display to show "E".
Constant temperature control unit
In case of a fault, the fault code and
fault symbol is displayed at the pro-
gramming unit
Weather-compensated control unit
The display flashes "Fault" if a fault
message is issued
Plain text fault displays:
&
Burner module
&
Outdoor sensor
&
Supply sensor
&
Boiler sensor
&
Com.supply sens.
&
DHW sensor
&
Flue gas sensor
&
DHW outlet sensor
&
Room sensor
Fault display
67
Troubleshooting
5692 672 GB