12
7. Electronic Circuit Diagram
1
2
3
1
2
3
L1
L2
GRN
GRN
CORE
FG1
CORE
CORE
TERMINAL
BOARD
POWER SUPPLY
TO
INDOOR UNIT A
TO
INDOOR UNIT B
TERMINAL
BOARD
CORE
CORE
M
M
FM
BLK
BLK
WHT
WHT
Y/G
BLK
BLU
RED
WHT
FG2
CN-WHT
WHT
BLK
WHT
WHT
WHT
WHT
WHT
WHT
WHT
WHT
WHT
CN-BLK
WHITE
ACN1
BLACK
ACL1
CN-COM
1
3
5
7
9
FUSE 401
30A
250V
ELECTRONIC CONTROLLER
(SUB)
GROUND PLA
T
E
Y/G
CORE
CORE
CN-DAT
A
WHITE
CN-DAT
A
WHITE
1
9
1
9
ELECTRONIC CONTROLLER
(DISPLA
Y)
POWER SA
VE
JP1
COOL
ONL
Y
1
1
1
1
7
6
8
14
7
1
PRIORITY
MODE
PUMP
DOWN
OPERA
TION TEST
WIRING CHECK
WHT
WHT
WHT
WHT
WHT
WHT
WHT
WHT
WHT
WHT
WHT
WHT
WHT
WHT
WHT
WHT
WHT
WHT
WHT
WHT
WHT
CN-DISP 1
WHITE
CN-NMODE 1
WHITE
CN-DISP 1
WHITE
CN-DISP 2
WHITE
CN-NMODE
YELLOW
ELECTRO-
MAGNETIC
COIL
(4 W
A
Y
V
A
L
VE)
CRANK
CASE
HEA
T
ER
ELECTRO-
MAGNETIC COIL
(EXP
AND V
A
L
VE)
ELECTRO-
MAGNETIC COIL
(EXP
AND V
A
L
VE)
SENSOR
COMPLETE
DIS.T .TEMP
.SENSOR
(THERMISTO
R)
PIPE TEMP .SENSOR
(DEF)
(THERMISTO
R)
SENSOR
COMPLETE
SENSOR
COMPLETE
COND.TEMP .SENSOR
(THERMISTO
R)
OUTLET TEMP
.SENSOR
(THERMISTO
R)
GAS PIPE
SENSOR A
LIQUID PIPE
SENSOR A
LIQUID PIPE
SENSOR B
GAS PIPE
SENSOR B
SENSOR COMPLETE
SENSOR COMPLETE
HIGH PRESSURE SW
.
F
A
N MOT
O
R
RED
RED
COMPRESSOR
BLK
BLK
GR
Y
GR
Y
REACT
O
R
REACT
O
R
CONNECT
OR
WHITE
4
4
1
11
33
RED
BLU
YL
W
RED
BLU
YL
W
CORE
1
GR
Y
AC-WHT
AC-BLK
GR
Y
B
LK
BLK
FUSE1
T
3.15A
L
250V
FUSE2
T
2.5A
L
250V
R
Y
-PWR
RY
-A
C
PTC1
PTC2
DB2
DB1
L
DB3
CT400
RY
-C
T1
L1-I
L2-I
L2-O
L1-O
L
L
L
L
L
L
P
N
U
V
W
CN-FM1
WHITE
1
1
1
1
1
4
1
1
1
6
1
1
13
3
82
4
11
10
2
7
CN-PSW1
BLUE
CN-TH3
WHITE
CN-TH4
WHITE
CN-TH1
WHITE
CN-TH2
YELLOW
CN-DIS
WHITE
CN-EV2
YELLOW
CN-EV1
WHITE
CN-HT
BLACK
CN-HOT
BLUE
CR3
RY
-H
O
T
R
Y
-HT
ELECTRONIC CONTROLLER
(MAIN)
5
V
R100
15.0k
1%
R101
7.50k
1%
C46
1u
6.3
V
C45
1u
6.3
V
5
V
C47
1u
6.3
V
R102
4.99k
1%
C209
1u
6.3
V
KB
5
V
C4
8
1u
6.3
V
R103
7.50k
1%
5
V
C239
1u
6.3
V
C240
1u
6.3
V
R342
15.
8
k
1%
R341
15.
8
k
1%
5
V
C232
1u
6.3
V
C241
1u
6.3
V
R33
8
15.
8
k
1%
R333
15.
8
k
1%
13
V
R13
8
5.6k
D64
D63
D62
D34
KB
C21
8
0.047u
25
V
D61
D60
D59
D5
8
D57
13
V
D33
Q25
b
c
e
R365
10k
2SB11
88
13
V
13
V
IC
8
IC
8
IC
8
IC
8
V
CC
V
CC
G
N
D
1
9
B1HBGFF00007
B1HBGFF00007
2
3
4
16
15
14
13
IC15
11
6
IC15
21
5
IC15
31
4
IC15
41
3
IC15
71
0
8
9
5
V
R256
10k
R147
10k
R146
10k
R3
8
6
10k
5
V
5
V
R309 1.2k
GREE
N
LED6
GREE
N
LED5
GREE
N
LED3
GREE
N
LED1
GREE
N
LED4
GREE
N
LED2
R30
8
1.2k
R307 1.2k
R306 1.2k
R305 1.2k
R304 1.2k
5
V
JP1
S
W
4
S
W
5
O
N
OFF
O
N
OFF
1
2
3
1
2
3
5
V
1
2
3
4
1
2
3
4
1
2
3
4
S
W
3
S
W
2
S
W
1
5
V
5
V
R373 10k
R374 10k
R375 10k
R370 10k
R371 10k
R372 10k
5
V
13
V
C276
1000p
R3
88
47k
R253
10k
5
V
13
V
V
DD
2X
1X
X-COM
0X
3X
A
B
0Y
2Y
Y-
C
O
M
3Y
1Y
I
N
H
V
EE
V
SS
1
2
3
4
5
6
7
8
16
15
14
13
12
11
10
9
5
V
KB
C212
1u
16
V
IC17
TC4052B
1
2
3
4
5
6
7
8
16
15
14
13
12
11
10
9
IC1
8
TC4052B
V
DD
2X
1X
X-COM
0X
3X
A
B
0Y
2Y
Y-
C
O
M
3Y
1Y
I
N
H
V
EE
V
SS