SERVICING
64
T
ur
n gas
s
uppl
y
of
f.
Set
t
her
m
os
tat
t
o c
al
l
for
heat
.
Smar
t V
al
v
e i
s
pow
er
ed.
(
24v
ol
t
nom
inal
- 19.
5 v
ol
ts
mi
ni
m
u
m.
27.
5
M
a
x.
Igni
ter
w
ar
m
s
up
and
gl
ow
s
r
ed.
T
ur
n gas
on.
P
ilot
bur
ner
l
ight
s
U
npl
ug
pi
lot
bur
ner
c
abl
e
M
eas
ur
e vol
tage at
T
er
m
inal
s
1&2
on
Sm
ar
t V
al
v
e.
(
19.
5 M
ini
m
um 27.
5 M
ax
.)
R
epl
ac
e I
gni
ter
/F
lame
s
ens
or
as
s
embl
y
St
a
rt
Ch
e
c
k
R
epl
ac
e Smar
t
V
al
v
e
YES
YES
C
hec
k
l
ine v
ol
tage
C
hec
k
pr
im
ar
y
, Aux
. &
r
ol
l out
l
imi
ts
Ch
ec
k
V
o
lt
age @
t
rans
fo
rm
e
r
C
hec
k
i
nduc
ed dr
af
t
bl
ow
er
oper
at
ion
C
or
rec
t l
ine v
ol
tage
Co
rr
e
c
t l
o
w vo
lt
a
g
e
R
es
et
or
r
epl
ac
e l
imi
t
R
epl
ac
e c
ont
rol
boa
rd
NO
C
hec
k
pi
lot
t
o bur
ner
al
ignm
ent
.
C
or
rec
t pi
lot
pos
it
ion
C
hec
k
i
gni
ter
c
ont
inui
ty
w
it
h
O
hm
met
er
SM
ART
VAL
VE
DI
AG
NO
ST
IC
/
T
R
O
U
BL
E SHO
O
T
IN
G
CHART
PROCE
DURE
A
CT
IO
N
M
e
as
ur
e v
ol
tage
@
L1,
L2,
&
GR.
M
eas
ur
e vol
tage @ C
ont
rol
boar
d G
Y
-25
& R
-1
M
eas
ur
e
v
ol
tage @ C
ont
rol
boar
d mol
ex
pl
ug "
O
R
-49 t
o BR-
21.
M
us
t
read 0
v
ol
ts
Chec
k
V
ol
tage @
R
ed &
V
iol
et
W
ir
es
t
o
ID
bl
ow
er
@
C
ont
rol
B
oa
rd(
230 v
ol
ts
)
Chec
k
t
her
m
os
tat
&
w
ir
ing
M
eas
ur
e
v
ol
tage @ C
ont
rol
boar
d
ter
m
ina
ls
"
W
" t
o C
19.
5 M
in.
27.
5 M
ax
.
R
epai
r/
repl
ac
e
the
rm
os
tat
/t
her
m
os
tat
wir
ing
C
hec
k
gas
val
v
e
C
hec
k
i
ngi
ter
C
hec
k
gas
val
v
e
C
hec
k
pi
lot
as
s
embl
y
NO
V
er
if
y
t
hat
pi
lot
i
s
pos
it
ioned i
n f
ront
of
t
he
bur
ner
c
a
rr
y
-o
ver
V
er
if
y
t
hat
pi
lot
or
if
ic
e i
s
f
ree of
obs
tr
uc
ti
ons
an
d c
or
ec
tl
y
s
iz
ed
for
gas
dd
C
hec
k
pr
es
s
ur
e s
w
it
c
h
oper
at
ion
C
hec
k
V
ol
tage @ Y
el
.-
11 at
Smar
t
v
al
v
e
(19
.5 vol
ts
mi
n.
27.
5
M
ax
.)
R
epl
ac
e I
.D
. B
low
er
R
epai
r w
ir
ing or
r
e-
pl
ac
e pr
es
s
ur
e s
w
it
c
h
YE
S
NO
V
er
if
y
t
hat
pi
lot
adj
us
tm
ent
on gas
val
v
e
open and
adj
us
ted c
or
rec
tl
y
C
le
ar
obs
tr
uc
ti
on or
repl
ac
e pi
lot
or
if
ic
e
Open or
adj
us
t gas
v
al
v
e pi
lot
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
YE
S
NO