61
SERVICING
b4
E
_b4
B
low
er
T
rip
or
Lo
st
R
ot
or (M
OT
O
R
T
R
IP
S
)
B
lo
w
er
M
ot
or
- Cu
rre
nt
T
rip
(o
r) L
os
t
Ro
to
r
•
Fan/
m
ot
or
obs
tr
uc
tion or
abn
or
m
al
m
ot
or
loadi
ng
•
P
ow
er
in
te
rr
upt
ion (
low
v
ol
tag
e)
•
H
igh l
oadi
ng
c
ondi
tions
, bl
oc
ked f
ilt
er
s
•
B
loc
kage i
n t
he ai
rfl
ow
(
duc
tw
or
k)
or
d
uc
tw
or
k u
nder
si
ze
d
•
C
hec
k
fo
r obs
tr
uc
tion on t
he f
an/
m
ot
or
/duc
tw
or
k
•
V
er
ify
t
he i
nput
v
ol
tage at
t
he m
ot
or
•
C
hec
k
fil
ter
s,
gr
ill
s,
duc
t s
ys
tem
, c
oi
l ai
r i
nl
et
/out
le
t f
or
bl
oc
ka
ge
s.
•
R
epl
ac
e m
ot
or
b6
E
_b6
V
ol
tage or
T
em
per
at
ur
e
Tr
ip
(
M
O
TO
R
VO
LT
S)
•
B
low
er
m
ot
or
s
tops
fo
r ov
er
/u
nder
vo
ltage
•
B
ow
er
m
ot
or
s
tops
due t
o P
C
B
ov
er
heat
in
g
•
H
igh A
C
li
ne v
ol
tage
t
o I
D
bl
ow
er
•
L
ow
A
C
li
ne v
ol
tage
t
o I
D
bl
ow
er
•
H
igh am
bi
en
t t
em
pe
rat
ur
es
•
Fan/
m
ot
or
obs
tr
uc
tion or
bl
oc
kage i
n t
he ai
rfl
ow
• V
er
ify
li
ne v
ol
tage
t
o bl
ow
er
is
w
ith
in
t
he r
ang
e s
pec
ifi
ed on t
he I
D
bl
ow
er
r
at
ing pl
at
e
• S
ee "
In
st
al
la
tion
In
st
ru
ct
io
ns
" f
or
in
st
al
la
tion
requi
re
m
ent
s
• C
hec
k p
ow
er
t
o a
ir handl
er
bl
ow
er
• C
hec
k f
or
obs
tr
uc
tion on t
he f
an/
m
ot
or
/duc
tw
or
k
• C
hec
k w
iri
ng
• R
epl
ac
e m
ot
or
b7
E
_b7
In
co
mp
le
te
P
ar
ame
te
rs
S
end
to
M
ot
or
(M
O
TO
R
PAR
AM
S
)
ID
bl
ow
er
m
ot
or
doe
s not
hav
e
re
qui
red pa
ra
m
et
er
s
to
func
tio
n.
M
ot
or
fa
ils
t
o s
tar
t 40
cons
ec
ut
iv
e
tim
es
.
•
W
rong /
no
s
har
ed d
at
a on t
he net
w
or
k
•
L
oc
ked m
ot
or
r
ot
or
c
ondi
tion
• C
hec
k f
or
lo
ck
ed
r
ot
or
c
on
di
tion (
se
e abov
e e
rr
or
c
ode
fo
r det
ai
ls
)
• R
epl
ac
e c
irc
ui
t b
oar
d or
m
ot
or
b9
E
_b9
N
o D
is
pl
ay
Low
Indoor
A
irf
lo
w
(
w
ithout
E
lec
tr
ic
H
eat
m
ode
)
•
Fan/
m
ot
or
obs
tr
uc
tion or
bl
oc
ked f
ilt
er
s
•
R
es
tr
ic
tiv
e duc
tw
or
k or
duc
tw
or
k under
si
ze
d
• I
D
m
oto
r f
ai
lu
re
• C
hec
k f
or
obs
tr
uc
tion on t
he f
an/
m
ot
or
• C
hec
k d
uc
tw
or
k/
fil
ter
fo
r b
loc
kage,
c
lean f
ilt
er
s
• R
em
ov
e obs
tr
uc
tion.
V
er
ify
al
l r
egi
st
er
s ar
e f
ul
ly
open
• C
hec
k t
he c
onne
ct
ions
an
d t
he r
ot
at
ion of
t
he
m
ot
or
• V
er
ify
t
he i
nput
v
ol
tage at
t
he m
ot
or
• V
er
ify
d
uc
tw
or
k i
s appr
opr
ia
te
ly
s
iz
ed f
or
s
ys
te
m
. R
es
iz
e/
repl
ac
e duc
tw
or
k i
f neede
d
• R
epl
ac
e m
ot
or
9b
E
_9
b
LO
W
ID
A
IR
E
H
M
O
D
E
Lo
w
Indoor
A
irf
lo
w
(
w
ith E
lec
tr
ic
H
eat
m
ode
)
•
Fan/
m
ot
or
obs
tr
uc
tion or
bl
oc
ked f
ilt
er
s
•
R
es
tr
ic
tiv
e duc
tw
or
k or
duc
tw
or
k under
si
ze
d
• I
D
m
oto
r f
ai
lu
re
•
C
om
bi
nat
io
n m
is
tak
e of
out
do
or
uni
t an
d i
ndoor
uni
t
• C
hec
k f
or
obs
tr
uc
tion on t
he f
an/
m
ot
or
• C
hec
k d
uc
tw
or
k/
fil
ter
fo
r b
loc
kage,
c
lean f
ilt
er
s
• R
em
ov
e obs
tr
uc
tion.
V
er
ify
al
l r
egi
st
er
s ar
e f
ul
ly
open
• C
hec
k t
he c
onne
ct
ions
an
d t
he r
ot
at
ion of
t
he
m
ot
or
• V
er
ify
t
he i
nput
v
ol
tage at
t
he m
ot
or
• V
er
ify
d
uc
tw
or
k i
s appr
opr
ia
te
ly
s
iz
ed f
or
s
ys
te
m
. R
es
iz
e/
repl
ac
e duc
tw
or
k i
f neede
d
• R
epl
ac
e m
ot
or
70
E_
70
EEV O
PEN
C
K
T
E
EV d
is
co
nnec
tion
det
ec
te
d
•
In
door
E
E
V
c
oi
l not
c
onnec
te
d
• I
nc
or
re
ct
w
iri
ng
to
E
E
V
• C
hec
k I
ndoor
E
E
V
c
oi
l c
on
nec
tion (
P
C
B
and
junc
tion c
onnec
to
r)
• R
epl
ac
e E
E
V
c
oi
l
• C
he
ck
t
he
r
es
is
ta
nc
e v
al
ue
o
f EEV
co
il (
re
fe
r s
er
vi
ce
m
anual
)
• R
epl
ac
e t
he c
ont
ro
l boar
d
73
E
_73
LI
Q
T
E
M
P
F
LT
Li
qui
d s
ide t
her
m
is
tor
abnor
m
al
ity
•
O
pen (
or
) s
hor
t c
irc
ui
t of
t
he l
iqui
d t
her
m
is
tor
(
X5
A
)
•
L
iqui
d t
her
m
is
tor
r
ea
di
ng i
nc
or
re
ct
or
v
al
ues
out
si
de t
he n
or
m
al
r
an
ge
• C
hec
k t
he c
onne
ct
ion t
o l
iqui
d t
her
m
is
tor
(
P
C
B
and j
un
ct
ion c
on
nec
to
r)
• C
hec
k t
he r
es
is
ta
nc
e v
al
ue
of
t
he t
her
m
is
tor
(
re
fe
r s
er
vi
ce m
anu
al
)
• R
epl
ac
e t
her
m
is
tor
• R
epl
ac
e t
he c
ont
ro
l boar
d
74
E
_74
G
A
S
T
E
M
P
F
LT
G
as
s
ide t
her
m
is
tor
a
bnor
m
al
ity
•
O
pen (
or
) s
hor
t c
irc
ui
t of
t
he g
as
t
her
m
is
tor
(
X5A
)
•
G
as
t
her
m
is
tor
r
ead
ing i
nc
or
rec
t or
v
al
ues
out
si
de
t
he nor
m
al
r
ange
• C
hec
k t
he c
onne
ct
ion t
o g
as
t
her
m
is
tor
(
P
C
B
and j
unc
tion c
onn
ec
to
r)
• C
hec
k t
he r
es
is
ta
nc
e v
al
ue
of
t
he t
her
m
is
tor
(
re
fe
r s
er
vi
ce m
anu
al
)
• R
epl
ac
e t
her
m
is
tor
• R
epl
ac
e t
he c
ont
ro
l boar
d
75
E
_75
P
R
E
S
S
U
R
E
F
LT
P
re
ss
ur
e
sens
or
ab
nor
m
al
ity
•
O
pen (
or
) s
hor
t c
irc
ui
t of
t
he P
res
su
re
s
ens
or
(
X15A
)
•
P
res
su
re
s
ens
or
r
ea
di
ng i
nc
or
re
ct
or
v
al
ues
out
si
de t
he n
or
m
al
r
an
ge
• C
hec
k t
he c
onne
ct
ion t
o p
res
su
re
s
ens
or
(
P
C
B
and j
unc
tion c
on
nec
to
r)
• C
hec
k t
he out
put
v
ol
tage o
f t
he pr
es
su
re
s
en
sor
(
re
fe
r
se
rv
ic
e m
anual
)
• R
epl
ac
e pr
es
su
re
s
ens
or
• R
epl
ac
e t
he c
ont
ro
l boar
d
77
E_
77
N
o D
is
pl
ay
Indoor
U
ni
t -
T
her
m
os
tat
co
m
m
uni
ca
tion er
ro
r (
st
ar
t-
up
&
dur
ing oper
at
ion)
•
In
co
rr
ec
t w
iri
ng bet
w
een I
D
un
it and t
he
rm
os
tat
•
T
her
m
os
ta
t f
ai
lu
re
•
P
ow
er
in
te
rr
upt
ion (
low
v
ol
tag
e)
• C
hec
k f
or
t
her
m
os
tat
and
indoor
uni
t w
iri
ng
• V
er
ify
t
he i
nput
v
ol
tage at
t
he I
D
uni
t and t
her
m
os
tat
• R
epl
ac
e c
ont
ro
l b
oar
d or
t
her
m
os
tat
• P
res
s "
LE
A
R
N
" b
ut
ton on
P
C
B
fo
r m
or
e t
han
5 s
ec
ond
s t
o r
ees
tabl
is
h ne
tw
or
k
Co
rr
e
c
ti
v
e
A
c
ti
o
n
s
Er
ro
r
Co
d
e
D
e
s
c
ri
pt
io
n
P
o
s
s
ibl
e
C
a
us
e
s
C
li
m
at
eT
a
lk
M
e
s
s
a
g
e
P
C
B L
E
D Di
s
p
la
y
INDOOR UNIT ERROR CODES
