Viessmann VITOCROSSAL 200 CM2 Service Instructions For Contractors page 34

Burner control unit
Burner control unit
Display and programming unit
A display and programming unit is integrated into the
burner control unit. The display screen shows the rele-
vant operating status, the service and parameter sta-
tus, as well as any fault or error messages.
Status Service
S
Fig. 32
Reset button
A
Operating and fault indications:
B
Heat demand
Burner operation
Maintenance
Fault
Selection button
C
Cursor keys
D
Operating display
In standard mode, the status indicator shows the cur-
rent operating status. The same applies in a fault state
after pressing reset button R.
The following displays are shown automatically. If a
fault occurs, see the fault codes on page 40
onwards. You can exit at any time by pressing reset
button R (hold for 0.5 to 10 s).
A
Status Service
Status Service
Status Service
34
R
System start-up after pow-
er supply ON
–
Standby
Idle state check
System tests
The display comprises four elements of 7 segments
each. 4 buttons serve to make adjustments at the dif-
ferent operating levels.
Status Service
Status Service
Status Service
Status Service
Status Service
Fan ramp-up
Valve and/or
relay test
Pre-purge
Pre-ignition
Ignition
Safety time
Flame formation