Emergency operation
Condens 7000 F – 6720871560 (2019/11)
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12 Emergency operation
The burner control unit automatically goes to emergency operation,
if the communication with the control unit is interrupted.
During emergency operation, the burner control unit regulates the boiler
temperature at 60 °C to's maintain the operation of the heating system
until communication has been restored.
12.1 Clearing faults in emergency operation
Observe corresponding technical documentation for the control unit and
user interface.
In emergency operation, faults can only be cleared via the reset button
on the burner control unit. Clearing is only possible, if the fault is a
locking fault.
Press the reset button to clear the fault.
Fig. 62 Clearing a fault on the burner control unit
[1] Reset button
13 Troubleshooting
13.1 Recognising the operating condition and clearing
faults
NOTICE:
System damage due to frost.
The heating system can freeze up if it has been switched off through a
fault shutdown.
Rectify the fault immediately and restart the heating system.
Where that is not possible, drain the heating and DHW pipework at
the lowest point.
Depending on which control unit is installed or the user interface used,
faults may be displayed differently. The fault history is also called up in
different ways.
For an overview of the operating and fault codes, along with possible
causes and remedial measures, refer to the technical documentation
of the control unit and the user interface (Chapter 14, page 45).
Some faults have to be cleared using the reset button on the burner
control unit ( Chapter 14, page 45).
Observe corresponding technical documentation for the control unit and
user interface.
13.2 Calling up the fault history
The fault history is called up in different ways, depending on the control
unit used or the user interface installed.
Observe corresponding technical documentation for the control unit and
user interface.
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