Troubleshooting; Fault Display - Viessmann FB2A Installation And Service Instructions For Contractors

Compact energy tower with a gas condensing boiler, 4.8 to 26 kw natural gas and lpg version, g.c. no: 47-819-18/47-819-19 19 kw/26kw
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Fault display

If there is a fault, the red fault indicator
A flashes. " " flashes on the display
and "Fault" is shown.
A
R
2
1
3
0
4
bar
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
Fault indicator A continues to flash. The
fault message goes into the standard
display of the short menu.
A fault messaging facility, if connected,
will be switched off.
If an acknowledged fault is not remedied,
the fault message will be re-displayed
the following day.
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
scanned.
Faults are sorted by date.
1. Press OK and
approx. 4 s.
2. "Fault history"
3. "Display?"

Troubleshooting

simultaneously for
85

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