148
Heati
ng op
eratio
n
Do
es he
at
in
g
in
doo
r fa
n n
o
rm
al
ly
op
er
a
te?
Is
i
n
do
or
P
M
V
no
rma
l?
Is
ch
ec
k
va
lv
e
of m
a
in
di
sc
ha
rg
e
pi
p
e
no
rm
al
?
Is
the
re
any
i
nte
rfe
renc
e
of
h
e
a
t-
e
xc
ha
ng
ing
of
in
do
or u
ni
t?
1.
Fil
te
r cl
og
gi
ng
2.
H
e
at
ex
ch
an
ge
r
cl
og
gi
ng
3
. Ai
r s
h
o
rt c
irc
ui
t
Are a
ny
i
ndo
or
u
ni
ts in di
ffere
nt
ref
rige
ran
t c
irc
ui
t
co
nn
ec
ted
?
Re
fr
igerant
over
cha
rge
,
c
lo
ggin
g, pi
pe b
re
aka
ge,
ab
normal
overloa
d
Is
c
h
ec
k
va
lv
e
of ma
in
di
sc
ha
rg
e
pi
pe
n
o
rm
al
?
Is the
re
cl
og
gi
n
g
in
an
y
va
lv
es
?
Is
co
nn
ec
tor
c
on
n
e
c
ti
on
, c
o
n
d
en
se
r
o
r fan
m
oto
r n
o
rm
al
?
Are
c
ha
rac
te
ris
tic
s of
se
ns
or
T
C
2 a
n
d
T
C
J
re
si
st
anc
e nor
ma
l?
Ch
ec
k i
ndoo
r P
.C. b
oard.
Failure
Re
pla
c
e
Repa
ir failure
parts.
Re
pai
r c
h
e
c
k
va
lv
e.
Repl
a
ce
E
lim
in
a
te the
in
ter
fer
en
ce.
Re
pla
c
e P
M
V
bod
y.
Chec
k and
c
o
rr
ect
wirin
g
.
Repl
ac
e TC2 or TCJ
se
nso
r.
Rep
air failure
pa
rt
s.
(Check it
u
s
ing the
mi
swiring check fun
ction
o
f t
h
e
o
ut
d
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,
d
iscon
n
ect
io
n of
wire,
etc.
)
Are
se
rvi
ce
v
a
lv
es
fu
lly
op
en
ed
?
Are
c
h
ara
c
teri
sti
c
s
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
a
tio
n
c
orr
esp
onde
d to t
h
e s
eas
on.
C
o
o
ling
o
p
er
at
io
n
Doe
s
co
ol
in
g o
ut
d
oo
r fa
n
n
o
rm
al
ly
op
er
a
te?
Is
t
h
ere
an
y fan
c
rac
k
or comin
g
-o
ff?
Is ou
tdo
o
r
PM
V norm
a
l?
1. Conn
ec
to
r
c
o
nn
ec
tio
n
2.
Wi
rin
g
3.
C
oi
l
4.
Val
v
e
b
o
dy
5
. O
u
td
oo
r I/
F P.
C. bo
ard
Is the
re
a
n
y
in
terf
ere
n
c
e
o
f h
eat
-
ex
ch
an
gin
g
of o
u
td
oo
r un
it?
1
.
He
at ex
ch
ang
e
r 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
ain
d
is
c
h
arg
e p
ipe
n
o
rm
a
l?
R
e
fr
ig
e
ra
n
t o
v
e
rc
har
ge, c
lo
ggi
ng, p
ipe
breakage,
abno
rm
al ove
rl
oad
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
s
s
ur
e ga
uge
(Che
ck
jo
int
)
2.
Pr
es
sur
e
d
is
p
la
y o
n
7-
se
gmen
t di
spl
a
y
3.
O
u
tput v
o
lt
age
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
a
rd
.
Op
en
se
rv
ic
e
v
a
lv
es
f
u
lly
.
Ch
eck
pa
rt
s
.
Fa
ilur
e
Repl
ace
Repai
r failure
p
a
rts.
Re
pai
r failure
p
a
rt
s.
Repai
r outdo
o
r
PMV
.
(C
on
nect
or
con
ne
c
tion
, 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
h
eck
val
v
e.
Re
pla
c
e
(Coil failure
, clogg
ing,
d
iscon
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,
d
iscon
nect
io
n of
wire,
etc.
)
Co
nnec
tors:
P
MV1
: CN300
No
(B)
7
. Ou
tdoo
r I
/F
P.C. b
oar
d trouble
8
. Op
eratio
n trouble
of
ch
e
ck val
ve of
m
a
in di
sc
har
ge pi
p
e
9
. Refrig
e
rant overcharge
e
s
u
a
C
1
. Pd
sen
s
o
r trouble
2. S
e
rvi
ce
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
c
lo
g
ging
6
. SV2, SV4, SV5 circuit trouble
e
m
a
n
e
d
o
c
k
c
e
h
C
e
d
o
c
k
c
e
h
C
High-
p
ressure
pr
ote
c
tive
ope
ration
139
A10-1510.indb 139
A10-1510.indb 139
2016/04/08 17:21:20
2016/04/08 17:21:20
AMP Air Conditioning
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