148
Heati
ng op
eratio
n
Do
es he
at
in
g
in
doo
r fa
n n
orm
al
ly
op
er
a
te?
Is
in
do
or
P
M
V
no
rma
l?
Is
ch
ec
k
va
lv
e
of m
ain
di
sc
ha
rg
e
pi
p
e
no
rm
al
?
Is
the
re
any
in
te
rfe
renc
e
of
h
ea
t-
e
xc
ha
ng
in
g
of
in
do
or u
n
it?
1.
Fil
te
r cl
og
gi
ng
2.
H
eat
ex
ch
an
ge
r
cl
og
gi
ng
3.
Ai
r s
h
or
t c
irc
ui
t
Are a
n
y i
ndo
or
un
its in di
ffere
nt
ref
rige
ran
t c
irc
ui
t
co
nn
ec
ted
?
Re
fr
igerant
over
cha
rge
,
cl
o
ggin
g, pi
pe b
re
aka
ge,
ab
normal
overloa
d
Is
c
hec
k va
lv
e
of ma
in
di
sc
ha
rg
e
pi
pe
no
rm
al
?
Is the
re
cl
og
gi
n
g in
an
y
va
lv
es
?
Is
co
nn
ec
tor
co
nn
ec
tion
, c
on
den
se
r
or
fan
m
oto
r n
o
rm
al
?
Are
ch
ar
ac
te
ris
tic
s of
se
ns
or
T
C
2 a
nd
T
C
J
re
si
st
anc
e
nor
m
al
?
Ch
ec
k i
ndoo
r P
.C. b
oard.
Failure
Re
pla
ce
Repa
ir failure
parts.
Re
pai
r c
he
ck
va
lv
e.
Repl
ace
E
lim
in
at
e the
in
ter
fer
en
ce.
Re
pla
ce P
M
V
bod
y.
Chec
k and
co
rr
ect
wirin
g.
Repl
ac
e TC2 or TCJ
se
nso
r.
Rep
air failure
pa
rt
s.
(Check it
u
sing the
mi
swiring check fun
ction
of
th
e
ou
td
oo
r
un
it.
)
No
Ye
s
Yes
Ye
s
No
No
Yes
Is SV5 circuit normal
?
Yes
No
Ye
s
No
No
No
Ye
s
Ye
s
No
Yes
No
Ye
s
No
Repai
r SV
5 circu
it.
(Coil failure
,clogging,
di
scon
nect
io
n of
wire,
etc.
)
Are
se
rvi
ce
v
a
lv
es
fu
lly
op
en
ed
?
Are
ch
ara
cteri
sti
cs
o
f h
igh
-
p
ress
ur
e
se
ns
or
no
rm
al?
Re
set
power supp
ly, and
sta
rt a
tes
t op
er
at
io
n
co
rr
esp
onde
d to t
he s
eas
on.
C
oo
ling
o
per
at
io
n
Doe
s
co
ol
in
g o
ut
d
oo
r fa
n
no
rm
al
ly
op
er
a
te?
Is
th
ere
an
y fan
c
rac
k
or comin
g
-o
ff?
Is ou
tdo
or
PM
V norm
al
?
1. Conn
ec
to
r
co
nn
ec
tio
n
2.
Wi
rin
g
3.
C
oi
l
4.
Val
ve
b
ody
5.
O
u
td
oo
r I/
F P.
C. bo
ard
Is the
re
an
y
in
terf
ere
n
ce
o
f h
e
at
-
ex
ch
an
gin
g
of o
utd
oo
r un
it?
1.
He
at ex
ch
ang
er cl
og
gin
g
2.
Air
sh
ort
ci
rcu
it
Is
SV
4 c
irc
ui
t n
ormal
?
Is
ch
ec
k va
lv
e o
f
m
a
in
d
is
ch
a
rg
e p
ipe
no
rm
al
?
R
ef
rig
er
a
nt
o
ve
rc
har
ge, c
lo
ggi
ng, p
ipe
breakage,
abno
rm
al ove
rlo
ad
Ye
s
Ye
s
Yes
Ye
s
Yes
Yes
Ye
s
No
No
No
Ye
s
No
No
No
No
Co
oli
ng
To
(B
)
He
atin
g
To (C)
* 1
. Pr
es
su
re
by
pre
ss
ur
e ga
uge
(Che
ck
jo
int
)
2.
Pr
es
sur
e d
is
pla
y o
n 7-
se
gmen
t di
spl
ay
3.
O
ut
put v
ol
tage
of I/F P
.C. bo
ar
d
If 1
and
2, 3 a
re
dif
ferent, a failure
of
pressur
e
se
nso
r
is
c
ons
id
er
ed.
If 2
and
3 are d
ifferen
t, check
I/
F
P.
C
. bo
ar
d.
Op
en
se
rv
ic
e
va
lv
es
fu
lly
.
Ch
eck
pa
rt
s.
Fa
ilur
e
Repl
ace
Repai
r failure
p
arts.
Re
pai
r failure
p
ar
ts.
Repai
r outdo
or
PMV
.
(C
on
nect
or
con
ne
ction
, fa
n
IP
D
U
, fan
moto
r, cab
ling)
E
lim
ina
te th
e in
ter
fer
enc
e.
Repai
r SV
4 c
ircu
it.
Re
pair c
heck
val
ve.
Re
pla
ce
(Coil failure
, clogg
ing,
di
scon
nect
io
n of
wire,
etc.
)
Is
SV
2 c
irc
ui
t n
ormal
?
Yes
No
Repai
r SV
2 c
ircu
it.
(Coil failure
, clogg
ing,
di
scon
nect
io
n of
wire,
etc.
)
Co
nnec
tors:
P
M
V1
: CN300
No
(B)
7
. Ou
tdoo
r I
/F
P.C. b
oar
d trouble
8
. Op
eratio
n trouble
of
ch
ec
k val
ve of
m
ain di
sc
har
ge pi
pe
9
. Refrig
erant overcharge
es
ua
C
1
. Pd
sen
so
r trouble
2. S
e
rv
ic
e va
lv
e cl
os
ed
.
3
. Indo
or / out
door fan
trouble
4
. Indo
or / out
door P
M
V cl
o
gging
5
. Indo
or
/ out
door
he
at ex
ch
ange
r
cl
o
gging
6
. SV2, SV4, SV5 circuit trouble
e
m
an
ed
oc
kc
eh
C
ed
oc
kc
eh
C
High-
pressure
pr
ote
ctive
ope
ration
139
A10-1510.indb 139
A10-1510.indb 139
2016/04/08 17:21:20
2016/04/08 17:21:20
