Troubleshooting; Fault Display - Viessmann Vitocrossal 200 Service Instructions For Contractors

Fault display

Fault display
The fault display is activated automatically if the burner control unit switches to a fault
state. The most recent fault will then be displayed. The fault LED is also illuminated
in the case of a non-lockout fault or flashes together with the fault code in the case
of a lockout fault.
Status Service
1. Correct the fault. For fault codes and
measures, see from page 48. Carry
out measures in the indicated order.
Fault memory
The ten most recent faults are saved and may be called up. The order of scans ranges
from the most recent to the earlier fault codes. The fault memory display is terminated
automatically if no key is pressed within 20 s.
Note
If the burner does not start up due to a non-lockout fault without displaying a fault
code, the fault memory may be able to indicate the cause.
To call up the fault codes, press the fol-
lowing keys:
1. S
longer than 2 s, " " flashes.
2. until "4" is shown under Serv-
ice.
3. S "4" will be displayed under Sta-
tus.
A Fault code of the most recent fault
(see table from page 48)
2. Press reset button R for longer than
0.5 s.
The operating display is shown again
and the burner control unit is reset.
4. / to scroll through the fault mem-
ory display.
Serv- Description
ice
1 Display fault codes
2 Detail fault codes
3 Clear fault memory
5. S the selected fault memory dis-
play will be shown under Sta-
tus.

Troubleshooting

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