
SERVICING
64
INDOOR UNIT ERROR CODES
S
y
m
p
to
m
s
of
Abn
o
rm
al
O
p
er
at
ion
(L
egac
y
&
C
o
m
for
tN
et
™
T
h
er
m
o
st
at
)
7-
S
e
gm
ent
LED
C
o
d
es
C
h
aract
er
s
Wi
ll
A
lt
e
rn
a
te
Faul
t D
esc
ri
pt
io
n
Co
m
fo
rt
N
e
t™
Th
er
m
o
st
at
O
n
ly
P
o
ssi
bl
e
C
a
uses
C
o
rr
ect
ive Act
ions
No
te
s
& Ca
u
ti
o
n
s
M
e
ssa
ge
C
ode
•
A
ir
hand
le
r bl
ower
f
a
ils
t
o
oper
a
te.
•
In
tegr
at
ed con
tr
o
l m
odul
e LE
D
di
sp
la
y pr
ov
ides i
n
di
ca
ted er
ro
r
code
.
•
C
o
m
for
tN
et
™
t
her
m
o
st
at
“
C
al
l f
o
r
S
e
rv
ic
e”
i
con i
llu
m
inat
ed
.
•
C
o
m
for
tN
et
™
t
her
m
o
st
at
s
c
ro
lls
“C
heck
A
ir
H
andl
e
r”
m
e
ss
age
.
b0
•
C
ir
c
ul
a
tor
bl
ow
er
m
o
to
r
is
no
t r
unni
ng
w
hen i
t shoul
d be
runni
ng.
MO
T
O
R
NO
T
RUN
b0
•
Loos
e w
ir
ing conne
ct
io
n
a
t
ci
rc
ul
at
or
m
o
to
r power
l
eads
or
ci
rc
ul
at
o
r m
o
to
r power
leads di
scon
nec
te
d
.
•
Fai
led ci
rc
ul
at
o
r bl
ower
mo
to
r.
•
T
ight
en or
cor
rect
wi
ri
ng
connect
ion.
•
C
heck
ci
rc
ul
at
or
bl
ower
m
o
to
r.
Repl
ac
e i
f
necess
a
ry
.
•
Tur
n
pow
er
O
FF
pr
io
r
to
r
epai
r
•
Repl
ace
ci
rc
ul
at
or
m
o
to
r w
ith
c
o
rre
c
t
repl
ac
em
ent
par
t.
•
A
ir
hand
le
r bl
ower
f
a
ils
t
o
oper
a
te.
•
In
tegr
at
ed con
tr
o
l m
odul
e LE
D
di
sp
la
y pr
ov
ides i
n
di
ca
ted er
ro
r
code
.
•
C
o
m
for
tN
et
™
t
her
m
o
st
at
“
C
al
l f
o
r
S
e
rv
ic
e”
i
con i
llu
m
inat
ed
.
•
C
o
m
for
tN
et
™
t
her
m
o
st
at
s
c
ro
lls
“C
heck
A
ir
H
andl
e
r”
m
e
ss
age
.
b1
•
I
n
te
gr
at
ed
cont
ro
l
m
odul
e ha
s l
o
st
com
m
uni
cat
ion
s wi
th
ci
rc
ul
at
or
b
lower
mo
to
r.
MO
T
O
R
C
O
MM
b1
•
Loos
e w
ir
ing conne
ct
io
n
a
t
ci
rc
ul
at
or
m
o
to
r cont
ro
l
leads.
•
Fai
led ci
rc
ul
at
o
r bl
ower
mo
to
r.
•
Fai
led i
n
tegr
a
ted
cont
ro
l
m
odul
e.
•
T
ight
en or
cor
rect
wi
ri
ng
connect
ion.
•
C
heck
ci
rc
ul
at
or
bl
ower
m
o
to
r.
Repl
ac
e i
f
necess
a
ry
.
•
C
heck
in
tegr
a
ted
cont
ro
l
m
odul
e.
R
epl
a
c
e
i
f
necess
a
ry
.
•
Tur
n
pow
er
O
FF
pr
io
r
to
r
epai
r
•
Repl
ace
ci
rc
ul
at
or
m
o
to
r w
ith
c
o
rre
c
t
repl
ac
em
ent
par
t.
•
Repl
ace
i
n
te
gr
at
ed
cont
ro
l m
odul
e w
it
h
co
rr
ect
r
e
p
lacem
en
t
par
t.
•
A
ir
hand
le
r bl
ower
f
a
ils
t
o
oper
a
te.
•
In
tegr
at
ed con
tr
o
l m
odul
e LE
D
di
sp
la
y pr
ov
ides i
n
di
ca
ted er
ro
r
code
.
•
C
o
m
for
tN
et
™
t
her
m
o
st
at
“
C
al
l f
o
r
S
e
rv
ic
e”
i
con i
llu
m
inat
ed
.
•
C
o
m
for
tN
et
™
t
her
m
o
st
at
s
c
ro
lls
“C
heck
A
ir
H
andl
e
r”
m
e
ss
age
.
b2
•
C
ir
c
ul
a
tor
bl
ow
er
m
o
to
r hor
se
power
in
shar
ed
dat
a set
does not
m
a
tc
h
ci
rc
ul
at
or
b
lower
m
o
to
r hor
se
power
.
MO
T
O
R
MI
SMAT
CH
b2
•
I
n
co
rr
e
c
t
ci
rc
u
lat
or
bl
ower
m
o
to
r
in
ai
r
handl
er
bl
ow
er
.
•
In
co
rr
e
c
t shar
ed da
ta
set
i
n
in
tegr
a
ted
cont
ro
l m
odul
e.
•
V
e
ri
fy
c
ir
c
ul
at
or
bl
o
w
er
m
o
to
r hor
se
power
i
s
t
h
e
sam
e
spe
c
ifi
ed f
o
r t
he
speci
fi
c ai
r handl
er
bl
ower
m
odel
. R
epl
a
c
e
i
s
necess
a
ry
.
•
V
e
ri
fy
s
har
ed da
ta
set
is
cor
rec
t f
o
r
th
e
spec
if
ic
m
odel
. R
e
-popul
at
e dat
a
u
s
in
g
c
o
rr
e
c
t m
e
m
o
ry
c
a
rd
if
r
equi
red.
•
Tur
n
pow
er
O
FF
pr
io
r
to
r
epai
r
•
Repl
ace
m
o
to
r
wi
th
co
rr
ect
r
e
p
lacem
en
t
par
t.
•
U
s
e
m
e
m
o
ry
c
a
rd
fo
r
the s
peci
fi
c m
odel
•
I
n
se
rt
m
e
m
o
ry
car
d
B
E
F
O
R
E
tu
rn
in
g
power
O
N
.
M
e
m
o
ry
ca
rd
m
a
y
be r
e
m
o
ved
af
te
r dat
a
i
s
loaded
.
•
Er
ro
r
code wi
ll be
cl
ear
ed onc
e shar
e
d
dat
a
and
m
o
to
r
hor
se
power
m
a
tc
h.
•
Tur
n
pow
er
of
f bef
or
e
re
mo
vi
n
g
me
mo
ry
ca
rd
•
A
ir
hand
le
r bl
ower
oper
at
es
at
reduced per
fo
rm
ance.
•
A
ir
fl
o
w del
iv
er
ed i
s l
e
ss
t
han
ex
pect
ed.
•
In
tegr
at
ed con
tr
o
l m
odul
e LE
D
di
sp
la
y pr
ov
ides b3
er
ro
r code.
b3
•
C
ir
c
ul
a
tor
bl
ow
er
m
o
to
r i
s
oper
at
ing i
n
a power
,
te
m
per
a
tur
e
, or
speed l
im
it
ing
condi
ti
on.
MO
T
O
R
LI
M
ITS
b3
•
Bl
oc
ked
fi
lter
s.
•
R
e
st
ri
ct
iv
e
duct
w
or
k.
•
U
nder
si
zed
duct
w
or
k.
•
H
igh am
bi
en
t t
e
m
per
at
ur
e
s.
•
C
heck f
ilt
e
rs
f
o
r bl
o
ckage.
C
lean f
ilt
er
s or
r
e
m
o
ve
obst
ruct
ion
.
•
C
heck
du
ct
w
o
rk
f
o
r
bl
oc
kage.
R
e
m
o
ve
obst
ruct
ion
. V
e
ri
fy
al
l
regi
st
er
s a
re f
u
lly
open.
•
V
e
ri
fy
duc
tw
or
k
is
appr
opr
ia
te
ly
si
zed f
o
r
s
ys
te
m
. R
e
si
ze
/r
ep
la
ce
duct
w
or
k i
f
ne
ce
ssar
y.
•
S
ee
"I
ns
ta
llat
ion
In
st
ru
ct
ions"
f
o
r i
n
st
al
la
ti
on
requi
re
m
ent
s.
•
Tur
n
pow
er
O
FF
pr
io
r
to
r
epai
r.
•
A
ir
hand
le
r bl
ower
f
a
ils
t
o
oper
a
te.
•
In
tegr
at
ed con
tr
o
l m
odul
e LE
D
di
sp
la
y pr
ov
ides i
n
di
ca
ted er
ro
r
code
.
•
C
o
m
for
tN
et
™
t
her
m
o
st
at
“
C
al
l f
o
r
S
e
rv
ic
e”
i
con i
llu
m
inat
ed
.
•
C
o
m
for
tN
et
™
t
her
m
o
st
at
s
c
ro
lls
“C
heck
A
ir
H
andl
e
r”
m
e
ss
age
.
b4
•
C
ir
c
ul
a
tor
bl
ow
er
m
o
to
r s
ense
s
a l
o
ss
ro
to
r c
o
n
tro
l.
•
C
ir
c
ul
a
tor
bl
ow
er
m
o
to
r s
ense
s
hi
gh
c
u
rr
e
n
t.
MO
T
O
R
T
R
IPS
b4
•
Abnor
m
a
l m
o
to
r l
o
a
d
ing,
sudden change
i
n
s
peed or
to
rque,
sudd
en bl
ocka
ge of
ai
r
handl
er
b
lower
/c
oi
l ai
r
in
le
t o
r o
u
tle
t.
•
H
igh l
oadi
ng
condi
tions,
bl
ock
ed f
ilt
er
s,
v
e
ry
re
st
ri
ct
iv
e duc
tw
or
k,
bl
ock
age of
ai
r han
dl
er
bl
ow
er
/c
oi
l ai
r i
n
le
t
or
out
le
t.
•
C
h
e
c
k
fi
lte
rs
, fil
te
r
gr
ill
s/
regi
st
er
s,
du
ct
sy
st
em
,
and
ai
r handl
er
bl
ower
/c
oi
l
ai
r i
n
le
t/
out
le
t f
o
r
bl
oc
kages.
•
Tur
n
pow
er
O
FF
pr
io
r
to
r
epai
r.