Viessmann VITOCROSSAL 200 Service Instructions Manual page 34

Burner control unit
Display and programming unit
Function
A display and programming unit is integrated into the burner control unit. The display
indicates the relevant operating conditions, the service and parameter conditions as
well as all fault and error messages.
Status Service
S
A Reset key
B LED: Left – heat demand; centre –
flame; right – fault
C Selection key
Operating display
In standard mode, the display shows the current operating conditions. The same
applies after pressing reset following a fault display.
The following displays are scrolled through automatically. In case of faults, see the
fault codes from page 41. You can exit at any time by pressing reset A for 5 to
10 s.
Status Service
Status Service
34
The display comprises three elements of
seven segments each. Four keys enable
adjustments to be made at the different
A
operating levels.
B
C
Standby
Start
Heat demand
System tests