88
Is
A
M
BER
L
E
D
st
a
tu
s
li
g
h
t
o
n
?
Is
th
e
re
2
4
V
a
t
SEC-
1
a
n
d
SEC
-2
?
Is
th
er
e
1
15V
a
t
L
1
a
n
d
L
2
?
Repla
c
e
fur
nac
e
c
ont
rol.
Repla
c
e
tra
nsf
orm
e
r.
Repla
c
e
d
o
o
r
sw
itch
.
Is
th
e
re1
1
5
V
g
o
in
gt
os
w
it
c
h
?
Is
do
or
sw
itc
h
clo
sed
?
Is
circ
uit
b
re
ak
er
cl
ose
d
?
Check
fo
r
co
nti
nuit
y
in
w
ir
e
from
ci
rcui
t
b
rea
k
e
r
to
fu
rn
a
c
e.
Close
circ
uit
b
re
ak
er
a
n
d
g
o
b
a
c
k
to
START.
Is
A
M
B
E
R
LE
D
st
a
tu
s
lig
ht
bli
n
k
ing
rapi
dl
y
w
it
ho
ut
a
p
aus
e
?
Check
fo
r
co
rr
ect
li
ne
volt
age
p
o
lari
ty
.
If
units
are
twinned,
check
for
proper
low-
voltage
(24V)
transformer
phasing.
Verify
unit is properly grounded.
Is
A
M
BER
L
ED
st
a
tu
s
li
g
h
t
b
li
n
k
in
g
ON/O
F
F
slo
w
ly
with
a
c
o
m
b
in
atio
n
o
f
Dete
rm
ine
st
at
us
c
o
d
e
.
T
h
e
st
atu
s
co
d
e
det
e
rm
ine
d
b
y
th
e
num
b
e
r
o
f
sho
rt
T
o
rec
a
ll
p
revi
ous
sta
tus
c
o
d
es
disc
onn
ect
th
e
R
the
rm
osta
t
c
o
n
n
e
cti
o
n,
res
e
t
p
o
w
er,
a
n
d
p
u
t
setu
p
sw
it
ch
S
W
1-1
in
the
ON
posi
tion
.
T
h
e
A
M
B
E
R
L
E
D
are
e
ra
se
d
a
fte
r
7
2
hou
rs
or
can
b
e
m
a
nuall
y
e
ras
ed
b
y
p
u
tti
n
g
setu
p
sw
it
ch
S
W
1-1
in
th
e
O
N
posi
tion
and
jum
pe
rin
g
R,
W
/W
1
,
a
nd
Y
/Y
2
sim
u
lta
n
eo
usl
y
setu
p
sw
it
c
h
S
W
1
-1
in
the
O
F
F
po
sitio
n
.
W
a
s
there
a
p
revi
ous
stat
us
c
o
d
e
o
th
e
r
th
an
#1
1?
Go
to
se
ctio
n
b
elo
w
fo
r
the
st
at
us
c
o
d
e
Does
the
c
o
n
tr
ol
re
sp
on
d
to
W
/W
1,
W
2
,
Y
1
,
Y
/Y
2,
a
n
d
G
(2
4V
)
therm
o
stat
signal
s?
Run
sy
stem
th
ro
u
g
h
a
lo
w-h
e
at
,
h
ig
h
-
hea
t,
o
r
c
oolin
g
c
y
c
le
to
c
heck
o
per
a
ti
o
n
.
S
tatus
co
des
a
re
e
ras
ed
aft
er
72
h
our
s
o
r
ca
n
b
e
m
an
ua
ll
y
e
ra
se
d
b
y
p
ut
ti
ng
setu
p
sw
it
c
h
S
W
1
-1
in
the
O
N
p
osi
tion
and
jum
pe
rin
g
R,
W
/W
1
,
a
nd
Y
/Y
2
sim
ultan
eo
usl
y
until
stat
us
c
o
d
e
#
1
1
is
Is
24V
p
re
se
nt
at
W
/W
1
,
W
2,
Y
1
,
Y
/Y
2
o
r
G
the
rm
o
st
a
t
te
rmi
na
ls
o
n
th
e
fur
na
c
e
cont
rol
?
Check
ro
o
m
th
e
rm
os
tat
or
inter
c
o
n
ne
ctin
g
ca
ble
.
Discon
nec
t
all
the
th
erm
o
st
at
wire
s
fr
o
m
the
fur
n
ac
e
c
ont
rol.
Does
the
p
robl
em
re
pe
at
whe
n
u
sing
a
jum
p
er
w
ire
?
Repla
ce
fu
rn
ac
e
c
ont
rol.
Th
e
the
rm
o
st
a
t
is
n
o
t
c
o
mp
a
ti
b
le
w
it
h
th
e
fur
nac
e
c
o
n
tr
ol.
E
ithe
r
install
a
b
alla
st
resist
o
r,
co
nn
ect
the
Com
2
4V
th
erm
o
st
at
term
in
al
to
th
e
therm
o
stat
,
o
r
repl
a
ce
th
e
the
rm
o
sta
t.
YE
S
NO
YE
S
YE
S
YE
S
YE
S
YE
S
YE
S
STAR
T
YE
S
YE
S
NO
NO
NO
OO
NN
NO
O
O
NN
NO
NO
NO
C
lose
the door switch.
YE
S
YE
S
YE
S
A190174
Fig. 71 -- Troubleshooting Guide
