5.6
Operating programme
Normal operation
POWER SUPPLY
t
2
P
H T
t
1
F M
M
I D
V 1
F
L E D
F
L E D
Lockout due to ignition failure
POWER SUPPLY
t
2
P
H T
t
1
F M
M
I D
V 1
F
Orange blink
L E D
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Start-up, calibration and operation of the burner
t
3
t
t
t
3 i
s
5 i
t
4 i
Green blink
Orange blink
Green
No flame during operation
Green blink
Orange blink
Green
Signal not requested
t
3
t
t
t
3 i
s
5 i
t
4 i
Lockout
Green blink
Red
Lockout due to extraneous light during pre-purging
20136860
POWER SUPPLY
P
H T
F M
M
I D
V 1
F
L E D
t
4 l
Lockout
Key
F
– Flame sensor
FM – Fan motor
HT – Heat request
ID
– Ignition device
LED – LED colour inside the button
Fig. 23
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
V1 – 1st stage valve
Fig. 24
25
GB
t
2
t
1
t
l
3
Orange
Red, green blink
blink
20136858
t
s
Lockout
Red blink
Fig. 25
20136866