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87
-
RD
Orange
OR
Yellow
/
Green
Y
/
G
Black
BK
Yellow
Y
White
WH
Red
BK
C-2
G1
RD
Y
/
G
S.IN
WH
R.IN
BK
WH
RD
PCB
ASSY
250V
20A
F2
F3 250V
1A
F4
250V
10A
F1
250V 2A
CIRCUIT
PA
M
SWITCHING POWER
CIRCUIT
NW
NV
NU
P
W
V
U
TRANSIST
OR
POWER
W
V
U
FIL
TER
NOISE
CN20S
CNTH
CNEEV
CNF
AN
M
M
3
〜
250V
15A
L
Y
/
G
N
1
3
2
T1
T2
OR
Y
M
tº
20S
TH1
TH2
TH3
EEV
FM
o
CM
tº
tº
tº
T
Indoor unit
Power source 1 Phase 220-240V
50Hz
L
Inspection of resistance value of sensor
Re
m
ov
e
th
e
co
nn
ec
to
r a
nd
c
he
ck
th
e
re
sis
ta
nc
e
va
lu
e.
Se
e
th
e
se
ct
io
n
of
se
ns
or
c
ha
ra
ct
er
ist
ic
s o
n
pa
ge
8
0.
Inspection power transisto
r
Re
m
ov
e
th
e
fa
ste
n
te
rm
in
al
a
nd
te
st
ou
tp
ut
v
ol
ta
ge
Inspection of electronic expansion valve
Check point of outdoor unit
See page 89.
Inspection of outdoor fan moto
r
See page 89.
Power source and serial signal inspection
1
to
2
: AC
220/230/240V
2 to 3 : Normal if the voltage oscillates between DC 0 and approx. 20V
CAUTIO
N
-
HIGH VOLTAGE
High
voltage
is
produced
in
the
control
box.
Don't
touch
electrical
parts
in
the
control
box
for
5
minutes
after
the
unit
is
stopped.
Color symbol
L
to
N
:
AC 220/230/240V
(10) Outdoor unit inspection points
Models SRC20ZIX-S,25ZIX-S,35ZIX-S
Outdoor unit