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11
7.
T
he
b
ur
ne
r
st
ar
ts
, b
ut
th
e
m
ai
n
fa
n
ne
ve
r c
om
es
on
.
8.
T
he
b
ur
ne
r
co
nt
in
ue
s
to
ru
n,
b
ut
th
e
fa
n
cy
cl
es
o
n
an
d
of
f.
• F
an
s
en
so
r
• H
ea
te
r C
on
tro
l U
ni
t (
H
C
U
)
• B
lo
w
er
m
ot
or
re
la
y
• B
lo
w
er
m
ot
or
• F
ue
l p
um
p
pr
es
su
re
• F
an
s
en
so
r
• H
ea
te
r C
on
tro
l U
ni
t (
H
C
U
)
• O
n
th
e
he
at
er
c
on
tro
l u
ni
t (
H
C
U
) d
is
co
nn
ec
t t
he
w
ire
s
fro
m
te
rm
in
al
s
X1
2
an
d
X1
3.
U
si
ng
a
n
oh
m
m
et
er
, c
he
ck
th
e
re
si
st
an
ce
b
et
w
ee
n
th
e
tw
o
w
ire
s
us
in
g
th
e
1K
o
hm
s
ch
ar
t o
n
pa
ge
1
6.
• T
ur
n
th
e
3-
po
si
tio
n
m
ai
n
sw
itc
h
to
th
e
fa
n
po
si
tio
n.
I
f t
he
b
lo
w
er
ru
ns
, c
he
ck
th
e
fa
n
se
ns
or
.
If
it
is
g
oo
d,
re
pl
ac
e
th
e
H
C
U
.
• T
ur
n
th
e
3-
po
si
tio
n
m
ai
n
sw
itc
h
to
th
e
fa
n
po
si
tio
n.
I
f t
he
re
la
y
pu
lls
in
, c
he
ck
fo
r v
ol
ta
ge
b
et
w
ee
n
th
e
L1
a
nd
L
2
te
rm
in
al
s.
T
he
n
ch
ec
k
th
e
vo
lta
ge
b
et
w
ee
n
te
rm
in
al
s
T1
a
nd
T
2.
T
he
v
ol
ta
ge
s
ho
ul
d
be
th
e
sa
m
e.
I
f i
t i
s
m
uc
h
lo
w
er
,
re
pl
ac
e
th
e
re
la
y.
• T
ur
n
th
e
3-
po
si
tio
n
m
ai
n
sw
itc
h
to
th
e
fa
n
po
si
tio
n.
C
he
ck
fo
r v
ol
ta
ge
b
et
w
ee
n
te
rm
in
al
s
T1
a
nd
T
2
on
th
e
m
ot
or
re
la
y.
I
f t
he
v
ol
ta
ge
is
g
oo
d,
re
pl
ac
e
th
e
m
ot
or
.
• U
se
a
h
ig
h
pr
es
su
re
g
au
ge
(0
-1
60
P
SI
) w
ith
1
/8
” N
PT
in
le
t.
In
st
al
l g
au
ge
in
th
e
pr
es
su
re
ta
p
po
rt
lo
ca
te
d
on
to
p
of
th
e
fu
el
p
um
p.
R
un
th
e
he
at
er
.
Ad
ju
st
th
e
pr
es
su
re
b
y
tu
rn
in
g
th
e
pr
es
su
re
a
dj
us
tin
g
sc
re
w
(l
oc
at
ed
o
n
th
e
rig
ht
h
an
d
si
de
of
th
e
fu
el
p
um
p)
u
nt
il
th
e
ga
ug
e
re
ad
s
11
0
PS
I.
• O
n
th
e
he
at
er
c
on
tro
l u
ni
t (
H
C
U
),
di
sc
on
ne
ct
th
e
w
ire
s
fro
m
te
rm
in
al
s
X1
2
an
d
X1
3.
U
si
ng
a
n
oh
m
m
et
er
, c
he
ck
th
e
re
si
st
an
ce
b
et
w
ee
n
th
e
tw
o
w
ire
s
us
in
g
th
e
1K
o
hm
s
ch
ar
t o
n
pa
ge
1
6.
• T
ur
n
th
e
3-
po
si
tio
n
m
ai
n
sw
itc
h
to
th
e
fa
n
po
si
tio
n.
I
f t
he
b
lo
w
er
ru
ns
, c
he
ck
th
e
fa
n
se
ns
or
.
If
it
is
g
oo
d,
re
pl
ac
e
th
e
H
C
U
.
V
F
4
0
0
T
R
O
U
B
L
E
S
H
O
O
T
IN
G
S
y
m
p
to
m
P
o
ss
ib
le
C
a
u
se
s
P
o
ss
ib
le
S
o
lu
ti
o
n
s