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54
Is
A
M
B
E
R
L
E
D
s
ta
tus
l
igh
t on
?
Is
t
h
e
re
2
4
V a
t SEC-
1
a
n
d
SEC
-2
?
Is
th
er
e
1
15V
at L1 an
d
L
2
?
Repl
a
c
e f
u
rnac
e c
o
nt
rol.
Is
do
or
s
w
itc
h
clo
s
ed
?
Repla
c
e t
ra
n
sf
orm
e
r.
Repla
c
e do
or
s
w
it
ch
.
Is
th
er
e 1
1
5V
goi
ng t
o
s
w
it
ch
?
Is
do
or
s
w
it
c
h
clo
s
ed
?
Is
circ
uit
bre
a
k
e
r cl
ose
d?
Check
fo
r co
nti
n
uit
y
i
n
w
ire
from
ci
rcui
t
bre
a
k
e
r t
o
f
u
rn
ace
.
Cl
ose
ci
rc
uit b
re
a
k
e
r a
nd
go
ba
ck
to
START.
Is
A
M
B
E
R
LE
D st
atu
s
li
g
h
t bli
n
k
ing
rapi
dl
y
w
it
h
o
u
t a
p
aus
e?
Che
c
k
fo
r co
rr
ect li
ne
volt
a
g
e
p
o
lar
it
y
.
If
units ar
e
tw
in
n
ed, ch
eck
for pr
op
er
lo
w
-
volta
g
e (2
4V
)
tr
a
n
sf
orm
e
r
p
h
asi
ng.
Is
A
M
B
E
R
LE
D st
atu
s
li
g
h
t bli
n
k
ing
ON/O
FF
slo
w
ly
with
a c
o
m
b
in
ati
o
n o
f
s
h
o
rt
an
d
l
o
ng
f
la
s
he
s
?
D
e
te
rm
ine s
tat
us c
o
d
e
. T
h
e st
atu
s
co
d
e
is a 2
digi
t n
u
m
b
e
r
w
it
h
th
e fi
rst
digit
det
e
rm
in
e
d
b
y
t
he num
b
er of
s
h
o
rt
flash
e
s a
n
d
th
e s
e
co
nd
digit
b
y
t
h
e
num
b
e
r o
f l
o
ng
flas
hes
?
T
o
rec
a
ll p
revi
ous
sta
tus
co
des
di
sc
onn
ect t
he R
the
rm
o
sta
t co
nn
ecti
on,
res
e
t
po
w
e
r,
an
d p
u
t s
e
tu
p
sw
it
ch S
W
1
-1 in
the
ON
po
si
tio
n
. T
h
e
A
M
BER L
E
D
w
ill
fl
ash
th
e st
atu
s
co
des
in
the
or
de
r o
f occ
u
rr
en
ce.
R
e
c
o
rd
st
a
tu
s
co
de
s
un
ti
l st
a
tu
s
co
de
#1
1
f
la
s
he
s
(
1
shor
t a
n
d
1 l
o
ng
fl
as
h).
A
ft
e
r s
tat
us c
o
de
#11
flash
e
s t
he
stat
us c
o
d
e
s
w
ill
re
p
e
at. St
atus
co
des
are
er
ase
d
afte
r
7
2
hou
rs or can
b
e
m
a
nual
ly
e
ras
ed
b
y
p
u
tti
ng s
e
tu
p s
w
it
ch S
W
1
-1 in
th
e O
N
posi
tion
and
jum
p
e
rin
g R, W
/W
1
, and
Y
/Y
2
sim
u
lta
neo
usl
y
until s
tat
us c
o
d
e
#
11 i
s
flas
he
d.
W
h
en
don
e
p
u
t
setu
p s
w
it
ch 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 t
o
s
e
ctio
n b
e
lo
w fo
r t
he s
tat
us c
o
d
e
that
w
a
s flas
he
d.
Does
the
co
ntr
o
l r
e
sp
on
d t
o
W
/W
1
,
W
2
,
Y1
,
Y/
Y2
, a
n
d
G
(
2
4
V
)
th
e
rm
o
s
ta
t
signal
s?
Run s
y
stem
t
h
ro
u
g
h
a lo
w-h
e
at
, hi
gh
-
hea
t, o
r c
o
olin
g c
y
c
le t
o
c
h
eck
o
p
er
ati
o
n.
S
tatus
co
des
ar
e e
ras
ed
aft
e
r 72
h
our
s
or c
an
be m
a
nu
all
y
era
s
ed
b
y
pu
tti
n
g
setu
p s
w
it
ch S
W
1-1 i
n
the
ON
posi
tion
an
d
jum
p
e
rin
g
R, W
/W
1
, and
Y
/Y2
sim
u
ltan
eo
usl
y
until s
tat
us c
o
d
e
#
1
1 i
s
flash
ed.
Is
24V
pr
es
ent at
W
/W
1
,
W
2
,
Y
1
, Y
/Y
2
or
G
th
erm
o
s
tat term
in
al
s on the
fu
rn
ace
cont
rol
?
Check
ro
om
th
erm
o
s
tat
or
inter
c
o
n
ne
ctin
g ca
ble
.
Di
scon
nec
t al
l
the
th
erm
o
s
tat
w
ire
s fr
o
m
the fur
n
ac
e
c
o
nt
rol.
Does the
p
robl
e
m
r
epe
at w
h
e
n
u
s
in
g
a
jum
per
w
ire
?
Repla
c
e f
u
rn
ac
e c
ont
rol
.
T
h
e th
erm
o
s
tat
is n
o
t c
o
m
p
ati
b
le
w
ith
the
fur
n
ac
e
co
ntr
o
l.
E
ithe
r
in
stal
l a bal
la
st
resi
st
or,
co
nn
ect t
h
e
C
o
m
2
4V
th
erm
o
s
tat
term
in
al to
th
e t
h
erm
o
stat
, o
r r
e
pl
ace
th
e
th
er
mo
s
tat
.
YE
S
NO
YE
S
YE
S
YE
S
YE
S
YE
S
YE
S
YE
S
YE
S
YE
S
STAR
T
YE
S
YE
S
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
Trou
bles
hoo
tin
g
Guide
– Varia
b
le Spee
d
11
NO
PREV
IO
US CODE –
Sta
tus cod
e
s a
re
er
ase
d
afte
r
72
hou
rs
or c
a
n
be
m
a
n
u
all
y
er
ase
d
b
y
put
ting
set
up
sw
it
ch S
W
1-1 in
the
ON
posi
ti
o
n
a
nd j
u
m
perin
g R,
W
/W
1
,
and Y
/Y
2
si
m
u
lta
n
e
o
usl
y
un
til
st
atus co
de #1
1
is fl
as
hed
. R
u
n s
y
stem
t
h
ro
u
g
h
a lo
w-h
e
at,
hig
h
-h
e
a
t,
o
r co
o
lin
g
cy
cl
e
to
ch
e
c
k sy
s
te
m
.
1
2
BL
O
W
ER O
N
AF
TER PO
W
E
R UP –
(
1
1
5
V O
R
2
4
V)
–
N
o
rm
a
l
o
p
e
rat
io
n.
B
low
e
r r
u
n
s
f
o
r 9
0
se
c
o
n
d
s
, i
f un
it
i
s
po
w
e
re
d u
p
duri
ng
a c
a
ll f
o
r
hea
t (R
-W
/W
1 closed) o
r
when
(R
-W
/W
1 open
s)
du
ring
th
e bl
o
w
er
on-
del
a
y
p
eri
od.
13
L
IMI
T
C
IRC
U
IT
LOCK
OUT
– L
o
ck
out
o
ccurs
if t
he lim
it
,
dra
ft s
a
fe
gu
ard
, flam
e
r
o
llou
t, o
r
block
e
d ve
nt s
w
it
ch
(if
use
d
) is
op
en l
o
n
g
e
r th
an
3 m
in
u
te
s o
r
10 s
u
cce
ssive
lim
it
tr
ips occ
u
rr
ed
du
ri
n
g
hi
gh
-h
e
a
t.
C
ont
ro
l w
ill aut
o
-
rese
t a
fte
r 3
ho
urs
. S
e
e c
o
d
e
3
3
.
14
IGN
IT
ION
LOCK
OU
T
– S
y
s
tem
f
a
ile
d
t
o
ig
ni
te
gas
an
d
prov
e fl
am
e in
4
att
e
m
p
ts.
C
o
ntr
o
l
w
ill
aut
o-r
e
se
t a
fte
r
3 h
o
ur
s. S
ee s
tat
us c
o
d
e
3
4
.
A14311A
Fig. 59 -- Troubleshooting Guide