SECTION 18: T
ROUBLESHOOTING
79 of 91
R
e
place pr
essur
e
s
w
itch.
(P/
N
9043670
1)
R
eplace ignition module
.
(P/
N
90434002K)
Ye
s
Re
m
o
v
e o
b
str
uction.
Is the
v
ent pipe or the
inlet of the
b
ur
ner
o
b
str
uct
ed?
Is the ignit
er g
a
p
set at 1/
8
"?
Unplug
b
ur
ner and chec
k
ignit
er and ignition w
ir
e
.
Ar
e the
y damaged?
R
epair
, r
eplace or
tight
e
n
hoses as necessar
y.
Ar
e the air hoses t
o
the
pr
essur
e
s
w
itch secur
e
and leak fr
ee?
C
a
refull
y
r
eset spar
k
g
ap t
o
1/
8
".
R
eplace ignit
er and
ignition w
ir
e
as needed.
Chec
k
v
acuum
dif
fe
rential r
eading
. Is it
ok
a
y
?
R
eset damper
s
R
emo
v
e the
b
lue and
y
ello
w w
ir
es fr
om the
tr
ansf
or
mer
. Is ther
e
24
V
at the tr
ansf
o
rm
er
secondar
y
?
W
ith the
b
lue and y
ello
w
w
ir
es still r
e
mo
v
ed, is
the
v
olt
age at the
tr
ansf
or
mer
b
lac
k and
whit
e leads 1
2
0
V
?
Chec
k w
ir
ing
b
et
w
e
en
the po
w
er cor
d
and
tr
ansf
or
mer
.
R
econnect tr
ansf
or
mer
w
ir
e
s
. Place a jumper
w
ir
e
acr
oss the pr
essur
e
s
w
itch.
Is ther
e a spar
k?
R
eplace tr
ansf
or
mer
.
(P/
N
90436900)
Ye
s
Y
e
s
N
o
N
o
N
o
N
o
N
o
N
o
N
o
Ye
s
Y
e
s
Ye
s
N
o
N
o
Ye
s
Ye
s
Ye
s
Ye
s
Is ther
e spar
k
at the
ignit
er?
Ye
s
