Service manual

G.Fire Service Manual 5 Issue A — © Masport, March 2004
C
— SPARK OK BUT PILOT WON'T LIGHT
(Not ECS II or EIS)
1
2
Pilot
Ignites
3
4
No
Ignition
5
Y
ES
6
10
7
8
14
Y
ES
11
13
Y
ES
Y
ES
15
18
Is flame
satisfactory?
Does flame
remain when knob
is released 15
secs after ignition?
Y
ES
Press control down
in 'Pilot' position and
hold match flame at pilot
Wait several
minutes for
pure gas
NO
Y
ES
Go to
D
Turn pilot OFF
and attempt re-lighting
five times
(without match)
Does match
flame blow
sideways?
Is flame
weak?
Disconnect control
rod and adapter (*) and
hold valve down in 'Pilot'
position
Purge air from
system until pilot
ignites. Go to C2
Does pilot
light four out of
five times?
Y
ES
OK for service
Go to A9
Is gas pressure
OK after
regulator?
9
Is pilot
j
et
clear?
Is pilot
j
et
correct size?
Y
ES
Ad
j
ust regulator,
test ignition.
Go to C2
Clean
j
et and re-
test. Go to C2
Replace
j
et and
re-test. Go to C2
(*) = Some models only
Ad
j
ust pilot gas
flow (*) or replace
Pilot gas filter (*)
Re-test. Go to C2
Does match
flame blow
sideways?
Y
ES
Fit new control
rod. Re-test.
Go to C2
See Drg No 3
N
O
12
17
FIRST :-
• Check that all shut-off valves in the gas supply are open.
• For LPG models, check for gas in the bottle and open the bottle valve.
• Check for a gas smell near the pilot, and wait for it to disperse
before starting this procedure.
See Drg No 3
See Table No 1
16
19
See Table No 1
NO
NO
NO
NO
NO
NO
NO