I-40 Manual and Spark Ignition
www.lbwhite.com
Owner’s Manual • I-40
30
P
ro
b
le
m 5
He
at
er
b
ack
fl
ashe
s
ga
s t
hr
ou
gh a
ir
housing
.
P
ro
b
le
m 6
H
ea
te
r d
oe
s n
ot r
et
ur
n
ba
ck
to
lo
w h
ea
t.
R
em
ove t
he
rm
os
ta
tic
h
ea
d f
ro
m
m
od
ul
at
in
g v
al
ve a
ss
em
bl
y:
A
. I
f h
ea
te
r r
et
ur
ns t
o l
ow
fi
re
w
he
n y
ou p
us
h d
ow
n o
n p
lu
ng
er p
in o
f v
al
ve, r
ep
la
ce t
he
rm
os
ta
tic
h
ea
d / s
en
so
r a
ss
em
bl
y.
B.
If
h
ea
te
r s
til
l d
oe
s n
ot c
yc
le t
o l
ow
fi
re
, t
he m
od
ul
at
in
g v
al
ve i
s s
tic
ki
ng
a
nd s
ho
ul
d b
e r
ep
la
ce
d.
Is
p
ro
pe
r g
as p
re
ss
ur
e
su
pp
lie
d t
o t
he h
ea
te
r?
Is
inner
c
one
seam
sp
lit o
r i
s t
ip
damaged
or
missing
?
R
ep
la
ce
co
m
bu
st
io
n co
ne
.
C
le
an t
he
se c
om
po
ne
nt
s.
Ti
gh
te
n t
he n
ut
s.
R
ep
la
ce t
he
bur
ner
pla
te
or
gask
et
.
C
o
m
b
u
s
ti
o
n C
o
n
e K
it
s
Pa
rt N
um
be
r:
I-
40
- 5
701
30
A
re a
ir h
ou
si
ng
,
ve
nt
ur
i tube
, bur
ner
or
i
fi
ce
,
fi
lter
, or
inner
co
ne
p
ar
tia
lly p
lu
gg
ed
with
d
irt
?
A
re
bur
ner
as
sembly
nu
ts
loose
?
Is
inner
c
one
w
eld
seam
aligned
to
bur
ner
pla
te
no
tc
h?
Po
sition
the
inner
c
one
w
eld
seam
in
bur
ner
pla
te
no
tc
h.
Is
th
e b
ur
ne
r p
la
te o
r
bur
ner
gask
et
c
rac
ke
d?
D
oes
main
bur
ner
dec
rease
in
hea
t when
ther
mos
ta
tic
hea
d
is
s
et b
el
ow r
oo
m
temp
er
ature
?
C
he
ck f
or p
ro
pe
r g
as
pr
es
su
re
. P
ro
pe
r
pr
es
su
re
at
h
ig
h h
eat
sh
ou
ld
re
ad
5 P
SI
G
.
Ye
s
Ye
s
Ye
s
Ye
s
Ye
s
No
No
No
No
No
No