Viessmann Vitocrossal 200 CM2 400 Service Instructions Manual page 47

Vitocrossal 200, CM2 400, 500, 620 and 620 TX Service
Burner Control Unit
Operating display (continued)
(continued)
Pre-ignition
Ignition
Safety time
Flame established
Flame stabilization
Operation with flame
Reheat
Post-purge
Burner Control Unit
Maintenance program
no air pressure
Maintenance program
no gas pressure or
mains undervoltage
Forced ventilation
when no flame
was recognized
Safety shutdown
due to flame tear-off
Safety shutdown
due to reaching
maximum boiler
water temperature
47