915SB: Installation, Start-up, Operating and Service and Maintenance Instructions
Manufacturer reserves the right to change, at any time, specifications and designs without notice and without obligations.
63
A200518
Is
LED s
tat
us lig
h
t
on
?
Is
th
er
e 2
4
V
at
SE
C
-1
a
n
d SE
C
-2?
Is
th
er
e 1
15V
at
L1
an
d L
2?
Repla
c
e f
u
rn
ac
e c
o
nt
rol.
Is
do
or
s
w
itc
h
clo
s
ed
?
Repla
ce t
ra
n
sf
orm
e
r.
Repla
ce do
or
s
w
it
ch
.
Is
th
er
e 1
1
5V
goi
n
g t
o
s
w
it
ch
?
Is
do
or
s
w
itc
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
ak
er t
o f
urn
ace
.
Close circ
uit
b
re
a
k
e
r
a
n
d go
ba
ck
to
START
.
Is
LED s
tat
us lig
ht
blink
ing
ra
pidl
y
with
o
ut
a p
aus
e?
Check
fo
r co
rr
ect li
ne
volt
age
p
o
lar
it
y
.
I
f
units ar
e
tw
in
n
e
d, 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
LED s
tat
us lig
ht
blink
ing
ON/O
F
F
slo
w
ly
w
it
h
a
com
b
in
ati
o
n of
s
h
o
rt an
d
long
flas
hes
?
Dete
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
ine
d b
y
t
h
e num
b
er of
s
h
o
rt
fl
a
s
he
s
an
d t
he
se
c
on
d
d
ig
it
by
th
e
num
b
e
r o
f lo
ng
flas
hes
?
T
o
rec
all st
atu
s
co
de
bri
efl
y
rem
o
v
e
a
n
d r
e
co
nne
ct
one
RED
w
ir
e
f
rom
t
h
e
dra
ft s
a
fe
gu
ard
s
w
itc
h
t
o
dis
p
la
y
sto
re
d
stat
us c
o
d
e
.
You c
a
n
also
r
e
call
the
pr
evio
us st
atu
s
co
de
b
y
m
o
m
e
nt
aril
y
sho
rtin
g
t
h
e T
EST
/T
W
IN
term
in
al to
Com
2
4V te
rm
inal
un
til th
e L
E
D go
es o
u
t.
LED
w
ill
flas
h t
h
e
statu
s
co
de
of
th
e p
revi
ous
fa
ult o
r st
at
us co
de
#1
1
(1 s
h
o
rt
and
1 l
o
n
g
flash
)
if
th
e
re was no pr
evio
us
fa
ult
.
Aft
e
r
th
e con
tr
o
l
re
pe
a
ts th
e
co
de
4
tim
e
s, th
e c
o
nt
rol
w
ill
g
o
th
ro
ug
h a
bri
ef
com
p
o
n
e
n
t t
e
st s
e
q
u
e
n
ce
. T
h
e
induc
e
r
w
ill st
art
an
d r
u
n
fo
r th
e
enti
re c
o
m
p
on
ent
te
st. T
h
e HS
I, bl
o
w
e
r
m
o
tor
FA
N s
p
e
e
d
(A
M
BER
LE
D
boa
rd
s onl
y
) HEAT sp
ee
d,
an
d CO
OL
spe
ed w
ill
ru
n
for 10
–
1
5
s
e
co
nds
ea
c
h
. G
a
s v
a
lve
a
n
d
hum
idifi
er
w
ill
no
t
be t
u
rn
e
d
o
n
.
W
a
s there
a p
revi
o
us
stat
us c
o
d
e
o
th
e
r
tha
n
#
1
1
?
Go t
o
s
e
ctio
n b
e
lo
w fo
r t
h
e 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
, Y
1
(
if
pres
en
t), Y
/Y2, an
d
G (2
4V
) the
rm
ost
at
signal
s?
Run s
y
stem
t
h
rou
g
h
a h
e
ati
ng
or
co
oli
n
g
c
y
cle t
o
c
h
eck
op
er
atio
n. S
tat
us c
o
d
e
s
are
er
ase
d
afte
r 7
2
hou
rs.
Is
24V
pr
es
ent
at
W
, Y
1
(if
pre
s
en
t),
Y/
Y
2
or G
th
erm
o
s
tat
te
rm
inals
on
th
e fu
rn
ac
e
cont
rol
?
Check
ro
om
th
erm
os
tat
or
inter
co
nne
ctin
g ca
ble
.
Di
scon
n
ec
t all
the
th
erm
o
s
tat
wire
s fr
o
m
the fur
n
ac
e
c
o
nt
rol.
Does
the
p
robl
e
m
r
epe
at
whe
n u
s
ing
a
jum
per
w
ire
?
Repla
ce f
u
rn
ac
e c
o
nt
rol.
T
h
e th
erm
o
s
tat
is n
o
t c
o
m
pati
b
le
w
ith
the
fur
n
ac
e co
ntr
o
l.
Eithe
r i
n
stall
a
balla
st
resist
or,
co
nn
ect t
h
e
Com
2
4V
th
er
m
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
Troubles
hooting Guide
