6.9.2
Lockout due to ignition failure
P
TL
tw
M
M
I
V
SO
LED
6.9.3
Lockout due to a flame or flame simulation detected during pre-purging
P
TL
tw
M
M
I
V
SO
LED
Lockout types and triggering times in case of burner mal-
function
Description of types of faults
Presence of flame in pre-purging "t1"
No ignition at end of safety time "ts"
Flame goes out during operation
Not correct No. of turns of the fan motor (< 900 rpm)
Fault at the valve circuit
6.10 Recycle function if flame goes out during operation
The control box allows recycling, i.e. the complete repetition of
the start/up program.
If after the safety time since the last recycle the flame does not
appear, the burner carries out a lockout.
20028767
t1
t2
t3
ts
Lockout at 3
re-ignition
t1
ts
Lockout
.
Operation
D10631
th
.
D7253
Key
D10633
– Ignition transformer
I
LED – Reset button LED indicating operating
– Fan motor
M
– Ionisation probe
SO
– Limit thermostat
TL
– Gas valve
V
Lockout
At the end of the time of "t1"
After max. 3 repeats, within 1 second
After max. 1 repetition, if there is no flame at the end of ts
After max. 20 seconds
At the end of the time of "t1"
18
GB
Red (LED signalling)
status
Red (LED signalling)