4.10.2 LOCKOUT DUE TO FIRING FAILURE
Yellow
No signal needs to be received
D7232
4.10.3 LOCKOUT DUE TO EXTRANEOUS LIGHT
DURING PRE-PURGING
Yellow
Lockout due to extraneous light during preheating
Yellow
Yellow
3330
Green+Yellow
Green
Red
Green
Red+Yellow
Lockout
Red
KEY TO LAY-OUT
F
– Photoresistance
I
– Ignition transformer
K
– Thermostat enabling start-up after pre-
heating
LED – Reset button LED indicating operating
status
MV – Fan motor
PH – Oil heater
TL – Limit thermostat
V1 – Oil valve
OPERATING TIMES
t1
max
t1I
max
t2
-
t2I
max
t2p
max
t3
-
t3I
max
Time is expressed in seconds
D7231
11 GB
Red
Green + Yellow slow flashing
Green + Yellow fast flashing
Yellow
Green
Green + Yellow medium flashing
Red + yellow fast flashing
Yellow fast flashing
1
ts
-
30
t4i
-
3
t5i
-
30
t4I
max
600
t6
max
15
t6I
max
1
t7
-
5
8
3
1
360
30
120