Toshiba MCY-MHP0404HT, Service Manual, Page: 126 / 184

136
C
au
se
Ch
eck
c
ode
n
am
e
Che
ck
cod
e
O
ut
do
or
te
m
p
se
ns
or
m
is
w
iri
ng
(T
E
, T
L)
1. M
is
in
st
al
la
tio
n a
nd
m
is
co
nn
ec
tio
n o
f T
E
se
ns
or
an
d
TL
s
en
so
r
2. R
es
is
ta
nc
e
ch
ar
ac
te
ris
tic
s
er
ro
r o
f T
E
se
ns
or
a
nd
T
L
se
ns
or
3.
O
ut
do
or
P.
C
. b
oa
rd
(I
/F
) e
rro
r
Caus
e
Ch
ec
k
co
de
n
am
e
Ch
eck
co
de
O
ut
do
or
p
re
ss
ur
e
se
ns
or
m
is
w
iri
ng
(P
d,
P
s)
1.
H
ig
h-
pr
es
su
re
P
d
se
ns
or
a
nd
lo
w
p
re
ss
ur
e
se
ns
or
P
s a
re
e
xc
ha
ng
ed
2.
O
ut
pu
t v
ol
ta
ge
o
f e
ac
h
se
nso
r i
s
ze
ro
A
re
c
on
ne
ct
io
n
of
Pd
s
en
so
r a
nd
Ps
se
ns
or
co
nn
ec
to
rs
co
rre
ct
?
No
Y
es
A
re
o
ut
pu
t
vo
lta
ge
c
ha
ra
ct
eri
st
ic
s
of
P
d
se
ns
or
a
nd
P
s
se
ns
or
no
rm
al
?
No
Y
es
A
re
P
d
/ P
s
ou
tp
ut
v
al
ue
s
P
d>
P
s
du
rin
g
co
m
pre
ss
or
op
er
at
io
n?
No
Ye
s
C
he
ck
o
ut
do
or
I/
F
P
.C
. b
oa
rd
.
Defe
ct
Repl
ac
e
C
he
ck
c
om
pr
es
so
r
Sen
so
r e
rr
or
R
ep
la
ce
C
or
re
ct
c
on
ne
ct
io
n
of
c
on
ne
ct
or
s.
Pd
s
en
so
r:
C
N
50
1,
R
ed
Ps
s
en
so
r: C
N
50
0,
W
hi
te
(1
) P
re
ss
ur
e (
Ch
ec
k j
oi
nt
) b
y p
re
ss
ur
e g
au
ge
(2
) P
re
ss
ur
e d
is
pl
ay
o
n 7
-s
eg
m
en
t d
is
pl
ay
(3
) O
utp
ut
v
ol
ta
ge
o
f I
/F
P
.C
. b
oa
rd
If
(1
) a
nd
(2
),
(3
) a
re
d
iff
er
en
t,
an
e
rro
r o
f p
re
ss
ur
e
se
ns
or
it
se
lf i
s c
on
si
de
re
d.
If
(2
) a
nd
(3
) a
re
d
iff
er
en
t,
ch
ec
k
in
te
rfa
ce
P
.C
. b
oa
rd
.
Va
lu
e
ca
n
be
c
on
fir
m
ed
b
y
7-
se
gm
en
t
di
sp
la
y
fu
nc
tio
n
on
o
ut
do
or
I/
F
P.
C
. b
oa
rd
.
Pd
S
W
01
/
02
/
03
=
1
/1
/2
P
s
S
W
01
/
02
/
03
=
1
/2
/2
A
re
in
st
al
le
d p
os
iti
on
s
of
TE
s
en
so
r a
nd
TL
se
ns
or
c
or
re
ct
?
Are
c
on
ne
ct
io
n
of
T
E
se
ns
or
co
nn
ec
to
r
an
d
TL
s
en
so
r c
on
ne
ct
or
no
rm
al
?
C
or
re
ct
in
st
al
le
d p
os
iti
on
s o
f
TE
s
en
so
r a
nd
T
L s
en
so
r.
C
or
re
ct
co
nn
ec
tio
n
of
co
nn
ec
to
rs
.
No
Ye
s
O
ut
door I/F
P
.C. b
oa
rd
TE
s
en
so
r :
C
N
52
0,
G
re
en
TL
se
ns
or
:
C
N
52
3,
W
hi
te
No
Y
es
Are service
valves of gas pipe and liquid pipe of outdoor unit
fully opened?
No
Ye
s
O
pe
n s
er
vi
ce
v
al
ve
s
fu
lly
.
4.
4
-w
ay
v
al
ve
e
rr
or
C
he
ck
o
ut
do
or
I/F
P
.C
. b
oa
rd
.
De
fec
t
Rep
lac
e
TE
s
en
so
r:
O
ut
do
or
h
ea
t ex
ch
an
ge
r t
em
p
se
ns
or
TL
s
en
so
r:
Te
m
p.
s
en
so
r b
et
w
ee
n
se
rv
ic
e
va
lv
es
o
f l
iq
uid
p
ip
e
an
d
P
M
V
1
/ 2
*
Se
e
“O
ut
do
or
unit
te
m
pe
ra
tu
re
se
nsor
c
harac
te
rist
ics
” on
“9
-7
. S
en
sor
ch
aract
er
ist
ic
s”.
Are
re
si
st
an
ce
ch
ara
ct
er
is
tic
s
of
T
L
se
ns
or
an
d
TE
se
ns
or
no
rm
al
?
No
Y
es
Sen
so
r e
rr
or
R
ep
la
ce
Yes
No
Check and replace 4-way valve and coil.
Does discharge
refrigerant gas bypass to suction side through
4-way valve?
125