Panasonic WH-SDC03H3E5, Service Manual, Page: 45 / 215

45
9. Electronic Circuit Diagram
9.1 Indoor Unit
FU
S
E1
T6
.3
A L
250
V
AC
1-
L3
(B
LK
)
BL
BL
AC
K
W
WW
WW
BL W
(L
)
(N)
AC
T-
N
(W
HT
)
L2
(W
H
T)
L1
(W
H
T)
CN
-T
1
(W
HT
)
AC
L3
(B
LK
)
CN
6
AC
2-
N
2
(W
HT
)
AC
2-
L3
(B
LK
)
HT
1-
L3
(R
E
D)
RY-H T (L 3)
RY- BO OST ER
T2 (BL
K
)
CN-
P
UM
P1
(W
HT
)
G
G0
1
(G
RN
)
G
G0
5
(G
RN
)
G
G
W BL
B
BR
R
W
BL
B
BR
R
1 4 7 6 5
7 4 1 2 3
7 4 1 2 3
G0
2
(G
RN
)
G
T3
G0
8
(G
RN
)
R
DA
TA
(R
ED
)
N
O
ISE FI
LT
ER
CI
R
CUI
T
COM
M
UNI
CA
TI
ON
CI
RCU
IT
R
EC
TIF
IC
AT
IO
N
CI
RCUI
T
M
WA
TE
R
PI
PI
NG
WA
TE
R P
UM
P
GR
O
UN
DI
NG
TO
OUT
DOOR
UN
IT
TE
RM
IN
AL
BO
AR
D
CO
NN
EC
TI
NG
BA
R
GR
O
UND
IN
G
RC
CB
/E
LC
B
R
EC
TIF
IC
AT
IO
N
CI
RCU
IT
R
EC
TIF
IC
AT
IO
N
CI
RCUI
T
TR
AN
SFO
RM
ER
BA
CK
UP
HE
AT
ER
(3
kW
)
OL
P B
O
OS
TE
R
HE
AT
ER
RE
AT
O
R
NOI
SE
FI
LT
ER
CI
RC
UI
T
1 (BL
)
2 (W
)
3 (R
)
PO
W
ER
SU
PPL
Y 1
Si
ng
le
ph
as
e
AC
23
0V
50
Hz
230
V 30
A~
40
A
l
∆
n=
30
m
A
21 2
31
1 2
1 2
1
BL
T1 (BL
K)
BL
RR
R
EC
TIF
IC
AT
IO
N
CI
RCUI
T
OL
P
80
±3
°C
BL
BL
BL
BL
BL
W
W
R
R
W
(L
1)
(N
1)
GR
O
UND
IN
G
TER
M
IN
AL
BO
AR
D
PO
W
ER
SU
PPL
Y 2
Si
ng
le
ph
as
e
AC
23
0V
5
0H
z
230
V 30
A~
40
A
l
∆
n=
30
m
A
AB
SI
G
N
AL
DE
TE
CT
IO
N
CI
RCUI
T
SW
1
SW
2
EL
EC
TR
ONI
C
CONT
ROL
LER
(M
AI
N
)
ROOM
TE
MP
.
ZO
NE
1
CN
5
OU
TD
O
O
R
AI
R
SE
NS
O
R
TA
NK
SE
NS
O
R
CN
3
BO
IL
ER
CON
TA
C
T
EX
TR
A
PU
M
P
BO
O
ST
ER
HE
AT
ER
RY
-C
O
N
TA
C
T1
SS
R1
CN
-T
H1
(W
H
T)
1 2 3 4 5 6
t°
W
AT
ER
OUT
LE
T
TE
MP
. S
EN
SOR
(T
HE
RM
IS
TO
R)
t°
RE
FR
IG
ER
AN
T
TE
M
P.
S
EN
SOR
(T
HE
RM
IS
TO
R)
t°
W
AT
ER I
NL
ET
TE
M
P.
S
EN
SO
R (
TH
ERM
IS
TO
R)
SE
NS
O
R C
O
M
PL
ET
E
CN
-T
H3
(W
H
T)
1 2
t°
HE
X
W
AT
ER
O
UT
LE
T
TE
M
P.
S
EN
SO
R (
THE
RM
IS
TO
R)
SE
NS
O
R C
O
M
PL
ET
E
CN
2
HE
AT
CO
O
L
N
L
RO
O
M
TH
ER
M
O
1
CN1
CL
OS
E
O
PE
N
N
CL
O
SE
OP
EN
N
2-
W
AY
VA
LV
E
3-
W
AY
VA
LV
E
RY-V 2
RY-V 3
SI
G
N
AL
DE
TE
CTI
O
N
CI
RCU
IT
CN
-C
N
T
(W
H
T)
CN
-CO
M
M
(Y
LW
)
1 2 3 4
5 1 3
W W W W
CN
-P
W
R
(B
LK
)
AC
N
(W
H
T)
AC
L
(B
LK
)
3 1
W
C
N208
WA
TE
R P
UM
P
ZO
NE
1
C
N204
WA
TE
R
TE
M
P.
ZO
NE
1
WA
TE
R
TE
M
P.
ZO
NE
2
POOL
TE
M
P.
SE
NS
O
R
C
N205
BU
FF
ER
TA
NK
SE
NS
O
R
RO
O
M
TE
M
P.
ZO
NE
1
RO
O
M
TE
M
P.
ZO
NE
2
C
N210
EX
TE
RN
AL
CO
M
P.
S
W
HE
AT
/C
O
O
L
SW
IT
CH
CN
20
7
SOLAR TEMP.
SENSOR
DEMAND
SIGNAL
C
N206
VCC BIT2 BIT1
SG S IG NAL
DC
DC
GN
D
10
V
BL
EL
ECTRO
N
IC
CO
NTR
O
LL
ER
(S
U
B)
CN
-CN
T
(W
H
T)
1
1 2 3 4 5 6 1
1
2
3
4
2 3 4 5 6
5
SS
R200
WA
TE
R P
UM
P
ZO
NE
2
SS
R201
C
N209
PO
O
L
W
AT
ER
PU
M
P
SS
R202
SO
LA
R
W
AT
ER
PU
M
P
SS
R203
ER
RO
R
SI
G
NA
L
RY
1
CN2
01
CO
O
L
HE
AT
N
L
RO
O
M
TH
ER
M
O
2
SI
G
N
AL
DE
TE
CTI
O
N
CI
RCU
IT
C
N202
CN
20
3
CO
O
L
HE
AT
N
L
RO
O
M
TH
ER
M
O
1
SI
G
N
AL
DE
TE
CT
IO
N
CI
RCUI
T
N
OPE
N
CLO
SE
MI
XI
NG
VA
LV
E 2
SSR 207
SSR 206
N
OPEN
CL
OS
E
MI
XI
NG
VA
LV
E 1
SSR 205
SSR 204
WA
TE
R
PU
M
P
C
IRC
UI
T
RC
CB
/E
LC
B
BL BL
CN
4
EX
TE
RN
AL
CONT
RO
L 1
CO
NT
RO
L
PA
NE
L
1 2
4 3
ZD
2
L5
5V
C123
PC
1
R2
4
R1
1 2 3 4
OL
P
80
±3
°C
CN
-O
LP
1
(W
HT
)
1 2
B B
IC9
1 2 3 4 5 6 7
16 15 14 13 12 11 10
*R2
1
*R1
1
*R
Y
-H
T (
L3
)
12
V
_2
FL
O
W
SE
NS
O
R
CN
-F
LW
SE
N
(W
H
T)
4 1 2 3
4 1
W BR BL B
C9
2
R1
30
5V
CN
-P
W
R
4
(B
LU
)
C
N-
PW
R204
1 2 3
2 1
W W
5V
_2
5V
5V
_2
*R2
80
C2
01
CN
-P
W
R
3
(G
R
N)
DC
P
(R
ED
)
DC
N
(B
LU
)
3 1
B R
12
V
C1
05 IC4
R8
6
R8
1
L4
C6
1
C
63
C5
7
5V
_2
5V
C2
22
C221
C282
5V
5V
C220
C215
C2
17
C2
19
C
214
C2
42
C2
23
R2
68
R
26
5
R
260
R252
R234
C218
5V
R2
45
5V
C2
38
R263
R2
66
C2
39
ZD
20
2
R264
R267
R2
69
L2
03
L2
04 5V
5V
C
N-
PW
R202
(Y
LW
)
CN
-P
W
R
2
(B
LK
)
1
1 2 3 4 1 2 3 4
2
1 2
W W
20
V
C2
2
C1
18
C293
C294
C2
77
C2
76
ZD
203
R275
R2
76
PC
21
1
*PC2 05
G2
12
V
*R
27
8
*R
27
9
G2
20V
G2
G2
5V
1
1
2
4
3
4
2
3
ZD
20
1
R2
01
R205
*R
23
1
*R
22
5
P
C201
G2
G2
5V
1
4
2
3
R2
27
R2
18
5V
*PC20 4
1
2
4
3
C7
3
R
12
8
R1
32
R
13
5
R139
R
140
C7
9
R1
33
R
143
R1
41
R126
R136
C8
3
C8
9
C9
8
C121
RY
-B
O
O
ST
ER
C8
1
C
84
C9
0
5V
IC
15
1 2 3 4 5 6 7
16 15 14 13 12 11 10
5V
5V
12_
5V
1 2 3 4 1 2 3 4