Viessmann Vitocrossal 300 CA3 2.5 Installation And Service Instructions Manual page 188

Burner Control Unit
Burner Control Unit
Operating display (continued)
188
(continued)
Pre-ignition
Ignition
Safety time
Flame established
Flame stabilization
Operation with flame
Reheat
Post-purge
Vitocrossal 300 CA3 Series 2.5 to 6.0 Installation/Service
Maintenance program
no air pressure
Maintenance program
no gas pressure or
mains under voltage
Forced ventilation
when no flame
was recognized
Safety shutdown
due to flame tear-off
Safety shutdown
due to reaching
maximum boiler
water temperature