21
20146119
GB
Installation
5.12 Operating programme
Key to layout
FM
– Fan motor
HT
– Heat request
ID
– Ignition device
LED
– LED colour inside the button
SM
– Electric servomotor damper opener
PG
– Low gas pressure switch
SO
– Ionisation probe
t1
– Standby time
t2
– Initialisation time for checking
t3
– Pre-purging time
t3l
– Checks for presence of extraneous light during pre-purg-
ing phase
t4i
– Total ignition time
t4l
– Reaction time to achieve safety lockout due to lack of fail-
ure
ts
– Safety time
tsm
– Standby time for servomotor opening of the electric
damper opener
V1
– Gas valve
Normal operation
t
2
t
1
t
3
t
4i
t
s
HT
FM
ID
V1
LED
P
M
LED
t
4l
PG
P
M
~
SM
SO
SO
t s m
20147598
POWER SUPPLY
Fig. 18
Signal not requested
No flame during operation
Orange
blink
Orange
blink
Green
Green blink
Green blink
Lockout
Green
F
a
st
red
blink
Lockout due to ignition failure
t
2
t
1
t
3
t
4i
t
s
HT
FM
ID
V1
LED
P
M
PG
P
M
~
SM
SO
tsm
20147600
Fig. 19
Red
Green blink
Lockout
POWER SUPPLY
Orange
blink
LED
t
2
t
1
HT
FM
ID
V1
P
M
t
3
l
PG
t
s
P
M
~
SM
SO
tsm
Lockout due to extraneous light during pre-purging
POWER SUPPLY
Fig. 20
20147599
Red, green blink
Lockout
Red
Orange
blink
