Viessmann VITOLADENS 300-C Service Instructions Manual page 13

Further details regarding the individual steps
Yes
Ignition and oil
pump motor start
Yes
The solenoid
valves open
Yes
Flame signal pre-
sent
Symbol A
Yes
Burner in opera-
tion.
Green LED on
ignition transfor-
mer is perma-
nently on.
For further details regarding faults,
see page 64.
Commissioning, inspection, maintenance
No
Fault
No
F4
Fault
No
F4
(cont.)
Check the ignition
module and oil
pump motor,
cables and plug-
in connectors
Check the oil sup-
ply; check the so-
lenoid valves
Check ignition
electrodes, elec-
trode gaps and
connecting lines
13