2736
8
GB
4.6
BURNER START-UP CYCLE
When flame-failure occurs during working, shut down takes place within one second.
4.7
START-UP CYCLE DIAGNOSTICS
During start-up, indication is according to the followin table:
COLOUR CODE TABLE
Sequences
Colour code
Pre-purging
Ignition phase
1
1
1
1
1
Operation, flame ok
v
v
v
v
v
v
v
v
v
v
v
v
Operating with weak flame signal.
v
1
v
1
v
1
v
1
v
1
Electrical supply lower than
~
170V
Lock-out
Extraneous light
v
v
v
v
v
Index:
1
Off
Yellow
v
Green
Red
3s
40s
40s
max. 2s
max. 2s
D4172
Lock-out, due to ignition failure
Normal
Thermostat
Motor
Ignition transformer
Valves
Flame
Lock-out
