Bryant 355MAV - Manual (Page 16)

A02350b
11
NO PREVIOUS CO
DE – Sta
tus
code
s
are
er
ased after
72 hours
or
can
be man
ua
lly
er
ased
b
y
putting setup s
w
itch
SW1-1
in
the
ON posi
tion
an
d jumper
ing
R,
W/W1
,
and
Y
/Y
2
sim
ul
tane
ously
until statu
s
c
o
d
e
#11 is
fla
shed
.
Run sy
stem
through a lo
w
-
heat, high-hea
t, or
cooling
cy
cle to
che
ck
sy
stem
.
12
BLO
WER ON
AFTER PO
WER UP
–
(115V
OR 24V)
– Nor
mal oper
a
tion
.
Blo
wer r
uns f
o
r 90
seconds
, if uni
t is
po
wered up dur
in
g
a
call
fo
r heat (R-
W/W1
clo
sed)
or w
hen (R-
W/W1
ope
n
s
)
dur
ing
the
b
lo
w
er on-dela
y
period.
13
LIMIT C
IRCUIT LOCK
OUT – Loc
k
out
occurs if
the
limit or
flame
rollout s
w
itch is
open longer
than
3
min
utes or 10
succe
ssiv
e limit
tr
ip
s occurred
dur
ing high-
heat.
Control w
ill auto-re
se
t after 3 hours
.
See code
33.
14
IGNIT
ION LOCK
O
U
T – Sy
stem
faile
d
to
ignite
gas and pro
v
e flame
in 4 attempts
.
Control
w
ill auto-reset afte
r 3 hours
.
See
sta
tu
s code
34
.
21
GAS HEA
T
ING L
O
CK
OUT –
T
u
rn
off
po
wer and wait 5 min
ute
s
to
retr
y.
Check
fo
r:
-
Stu
ck close
d ga
s v
alv
e rela
y
on contro
l.
-
Mis
w
ire
or shor
t to
gas valv
e
w
ire
.
22
ABNORMAL FLAM
E-PR
O
VING
SIGN
AL
Flame is pro
v
ed w
h
ile gas v
a
lv
e is de-
energiz
e
d
.
Indu
cer
w
ill r
un un
til
f
a
ult is
cleared
. Che
ck
fo
r:
-
Stu
ck
open
or leaky
gas v
a
lv
e
.
23
PRESSURE SW
IT
CH DID NO
T OPEN –
Check f
o
r:
-
Obstr
u
cted
pressur
e tube
.
-
Pressure
s
w
itch stu
c
k closed.
24
SECOND
AR
Y
V
O
LT
A
GE FUSE
IS
OP
EN
Check f
o
r:
-
Shor
t ci
rcu
it in
se
co
ndar
y
v
oltage (24V)
w
ir
ing including
the
rmosta
t leads
.
Disconnect ther
mo
sta
t
lead
s to
isolate
short cir
cui
t.
32
LO
W
-HEA
T PRESSURE SW
ITCH DID
NO
T CLOSE
OR R
E
OPENED –
If ope
ns
dur
ing b
lo
w
er on-d
ela
y
per
iod,
b
lo
w
er w
ill
come on
fo
r the
sel
ecte
d b
lo
w
er off-dela
y
.
If opens w
ithin
5 min
ute
s after igniti
on
the
ne
x
t heating
cy
cle
w
ill be restr
icted
to
high-hea
t.
Che
ck
fo
r:
-
Proper v
ent sizing
.
-
L
o
w
inlet gas pressure (if LGPS
used).
-
Restr
icted comb
ustion
air
supply
.
-
Disconnected or obstr
ucted
pressu
re
tubing.
-
Def
ectiv
e or mis
w
ired pressure
s
w
itch
es
- Ex
cessiv
e
w
ind.
- Plugged
cond
ensa
te
dr
ain
.
-
W
a
ter
in v
ent pipin
g, possib
le
sagging
pipe
.
33
LIMIT C
IRCUI
T F
A
UL
T – Indicat
e
s
t
h
e
limit
o
r flame rollou
t
s
w
itch
is
open or the
fur
na
ce
is oper
atin
g in
high-hea
t only
mode due to 2 successiv
e lo
w
-heat limit
tr
ip
s
.
Blo
wer w
ill r
un f
o
r 4 min.
or
until
open
s
w
itch
remak
es w
h
iche
v
er is longer
.
If
open
longe
r than
3
min., cod
e chang
es
to loc
k
o
u
t #13.
If open less
than
3 min.
sta
tu
s code
#33
co
ntin
ue
s to
fla
sh
un
ti
l
b
lo
w
er shuts off
.
Flame rollou
t
s
w
itch
require
s man
ual reset.
Che
ck
fo
r:
-
Proper rear
air baffl
e
.
-
Loose
b
lo
w
er w
heel.
-
Def
ectiv
e s
w
itch
or
conne
cti
ons
.
-
Improper
lo
w-heat gas inpu
t
adj
ustme
nt.
-
Improper
or misalig
ned limit and/or
limit
shield.
-
Stu
ck high-heat
sol
enoid in gas v
a
lv
e
.
34
IGNIT
ION PRO
V
IN
G FAILURE
–
If
fla
me is
not sen
sed
dur
in
g the
tr
ial f
o
r
igni
tion
per
iod,
the con
trol
w
ill
repeat the
igni
ti
on
sequen
ce
3 more
ti
mes bef
ore
loc
k
out
#14
occurs
.
If
flame
sig
nal is lost dur
ing
the
b
lo
w
er on-dela
y
per
iod, b
lo
w
er w
ill come on
for the
sele
cted
b
lo
w
er
off-dela
y
.
Che
ck
the f
ollo
w
ing
it
ems first
bef
ore pro
ceed
ing
to
the
ne
x
t step
.
-
Gas v
a
lv
e tur
ned
off
.
- Man
ual
shut-off
v
a
lv
e
.
-
Green/Y
ello
w w
ire MUST be
conne
cte
d
to
fur
na
ce
sheet metal.
-
Flame sen
sor
m
ust not be
g
rounded.
T
o
dete
rmine w
hether
the
prob
lem
is in th
e
gas v
a
lv
e
, ignite
r,
o
r flame
sen
sor
the
sy
stem can
be oper
ated
in compone
nt test
mode
.
T
o
che
ck
th
e igniter
remo
v
e
the R
ther
mo
sta
t conn
ecti
on
from the con
trol
,
reset po
w
e
r,
and
put
s
e
tup
s
w
itch SW1-6 in
the ON
po
si
tion to
sta
rt
th
e component te
st.
Does
the
igniter
glo
w
or
ange/white b
y
the
end of
the
15
se
co
nd w
a
rm-up per
iod
?
Unplug igni
ter
har
n
e
ss
from
con
trol
an
d
repeat component
test b
y
tur
ni
ng
se
tup
s
w
itch S
W
1-6
OFF and then bac
k
ON.
Chec
k f
or 1
15V
betw
een pin 3 and
NEUTRAL-L2 on
th
e co
ntro
l.
Wa
s 115
V
presen
t
for
the 15
second
per
iod
?
Chec
k conne
cti
ons and
re
tr
y.
If current is near ty
pical
v
a
lue
(4.0-6
.0
nominal) and b
u
rn
e
rs
w
ill not
sta
y
on, repeat
che
ck
in high-h
eat.
If b
u
rners w
ill
stil
l not
sta
y
on replace
control.
If bur
ner
s
oper
ate in
high-heat then
s
w
itch to
lo
w-
heat, che
ck
mani
fo
ld
pressure
.
If OK,
c
h
e
c
k
b
u
rner
carr
yo
ver and flame
sen
sor
loca
tion
.
Clean flame
sen
sor
w
ith fine
steel w
ool
and re
che
ck
curren
t.
Nominal
curren
t is
4.0
to
6.0 microam
ps
.
Is
curren
t near
ty
pical v
a
lue?
Replace
ele
ctro
de
.
Will
main
b
u
rner
s
ignite
and sta
y
on?
Replace furnace
co
ntrol.
NO YE
S
YES YES
NO NO
15
BLO
WER MO
T
O
R
LOCK
OUT –
Indi
ca
tes
the
b
lo
w
er f
ailed
to
reach
250
RPM or the
b
lo
w
er f
ailed
to
co
mmunicate w
ithin 30
seconds afte
r being
turned
ON in tw
o
succe
ssiv
e heating
cy
cles
.
Control w
ill
auto-re
se
t after
3 hours
.
See code
41.
45 CONTR
OL
CIRCUI
TR
Y
LOCK
OUT A
u
to-re
set
afte
r 1 hour loc
k
out due
to: -
Flame
cir
cui
t
failu
re
.
-
Gas v
a
lv
e rela
y
stu
ck
open.
- Softw
are
che
ck
err
or
.
Reset po
w
er to
cle
ar
loc
k
out.
Repla
ce
control
if code
repea
ts
.
Replace furnace
co
ntrol.
Chec
k f
o
r
con
tin
u
ity
in the
har
ness
and igniter
.
Repla
ce
defec
tiv
e
c
o
mpon
en
t.
Reconne
ct the R
th
er
mostat lead
and
set
ther
m
o
sta
t
to
call
fo
r heat. Con
nect
v
o
ltmeter acro
ss gas v
a
lv
e connections
.
Does ga
s v
a
lv
e receiv
e 24V?
Does ga
s v
a
lv
e open and allo
w gas
to
flo
w?
Do the main b
u
rner
s ignite?
Do the main b
u
rner
s
sta
y
on?
Allo
w
b
lo
w
er to
co
me on and
repeat test
to
chec
k f
o
r
inter
mi
tten
t oper
a
ti
on.
Chec
k that all
gas v
a
lv
es are
tur
ned
on.
Replace
v
a
lv
e
.
Chec
k connecti
ons
.
If
OK
,
replace
control.
Check f
o
r:
-
Inadequa
te
flame
carr
yo
v
e
r
or rough ignition
.
-
L
o
w
inlet gas pressure
.
-
Proper
fir
in
g
rate
.
-
Air leakage
around
igniter
br
ac
k
et.
Repeat
call
for h
eat and check
flame
sen
sor
cur
rent dur
ing tr
ial
fo
r ignition
per
iod.
Is
the
DC
microamp
s bel
o
w
0.5?
YES NO
43
LO
W
-HE
A
T
PRES
SURE S
W
ITCH OP
EN
WHIL
E HIGH-HEA
T PRESSURE
S
W
ITCH IS CLOS
ED -
Che
c
k f
o
r:
-
L
o
w
-heat
pre
ssure s
w
itch stu
ck
open
.
-
Disconnected or obstr
ucted
pressu
re
tubing.
-
Improper pressure
s
w
itch w
ir
ing.
-
L
o
w
inlet gas pressure (if LGPS
used).
-
Plugged
cond
ensa
te
dr
ain.
-
W
a
ter
in v
ent pipin
g, possib
le
sagging
pipe
.
YES
YES
YES YES
NO NO
NO
NO
Fi
x
ed.
NO
—16—