L.B. White I-40 Infraconic Spark Ignition - Manual (Page 21)

20
Problem 2 Heater lights but will not stay lit
Is heat
er’s
dust f
ilt
er
reasonably
clean
?
R
emo
v
e
ignit
er and
clean its electr
ode.
R
emo
v
e
and clean
the f
ilt
er
.
Ye
s
No
Ye
s
Is high
v
oltage ignition lead in good
condition?
Is ignit
er clean?
Inner combustion cone or main burner orif
ice are
plugged with dir
t.
Clean these com
ponents.
No
Is
heat
er pr
operly
gr
ounded and are all
heat
er gr
ounds in good
condition?
Check all gr
ounds leads f
or:
- Corr
oded t
erminal
- Continuity/R
esistance
- Loose connections
R
epair or replace as
necessar
y.
Ye
s
No
Is pr
oper
pressure supplied
to
the heat
er?
Supply pr
oper pressure
and check f
or block
ages
in gas hose. R
e
fill
L.P
. gas container
s. Ye
s
No
No
V
erify resistance v
alue of
lead. Should be
1 ohm or less. V
erify lead
has good connections, and
no cuts.
R
eplace if necessar
y. Ye
s
Heater backflashes gas through air inlet. Problem 3
Is inner
cone seam
fractured or is tip
damaged or
missing?
R
eplace combustion cone.
Ye
s
No
Are
air housing
burner orif
ice,f
ilt
er
,
v
enturi tube, or inner cone
plugged with
dir
t?
Clean these Com
ponents.
No
Is pr
oper
gas pressure
supplied t
o
heat
er?
Check f
or pr
oper
gas pressure.
Pr
oper pressure at
high heat should
read 5 PSIG.
Ye
s
No
Combustion Cone Kits
Par
t
N
umber
57
0
1
3
0
Ye
s
Are burner assembly
nuts loose?
Ye
s
Tight
en the nuts
Is the burner
plat
e or burner gask
et
crack
ed?
Ye
s
R
eplace the burner plat
e or gask
et
No No
Is Inner cone w
eld
seam aligned t
o
burner plat
e
no
tch?
No
P
osition the inner cone w
eld seam in burner
plat
e no
tch.