Viessmann Series B2HA 40, Инструкция по установке и обслуживанию

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Weather-compensated control unit
In the event of a fault, red fault indicator
A
flashes. " " flashes on the display
and "Fault" is shown.
R
bar
A
The fault code is displayed with OK . For
an explanation of the fault code, see the
following pages.
For some faults, the type of fault is also
displayed in plain text.
Acknowledging a fault
Follow the instructions on the display.
Note
The fault message is transferred to the
standard menu.
A fault message facility, if connected, will
be switched OFF.
If an acknowledged fault is not remedied,
the fault message will be re-displayed
the following day and the fault message
facility restarted.
Calling up acknowledged faults
Select "Fault" in the standard menu.
The current faults will be displayed in a
list.
Calling up fault codes from the fault
memory (fault history)
The 10 most recent faults (including
resolved ones) are saved and can be
called up.
Faults are sorted by date.
1. Press OK and
å
simultaneously
for approx. 4 s.
2. "Fault history"
3. "Display?"
Troubleshooting
Fault display
5623 520 GB
Service