Viessmann Vitocrossal 200 Service Instructions Manual page 38

Initial start-up, inspection, maintenance
Burner control unit
Fault memory
The most recent six 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
will be terminated if no key is pressed within 20 s.
38
(cont.)
1. Press a.
The operating phase, under which
the fault has occurred, is displayed
under "Service" as long as this key
is held down. (value "01" to "21".
See flow chart on page 46).
2. Press b.
The additional fault information will
be displayed under "Service" for as
long as this key is held down.
3. Press the reset button.
Then the operating display will be
shown again.
1. Press the reset button and a
simultaneously.
The most recent fault will be dis-
played:
"1" will be displayed under "Status".
The fault code is displayed under
"Service".