Panasonic WH-SXC09H3E5 / WH-SXC12H6E5 / WH-UX09HE5 / WH-UX12HE5 Service Manual ▷ View online
49
9.1.2 WH-SXC12H6E8
3-
W
A
Y
VA
L
V
E
N
OP
E
N
CL
O
S
E
CL
O
S
E
O
PE
N
N
2-
W
A
Y
VA
L
V
E
EXTE
R
N
A
L
CO
NTR
O
L 1
BL
BL
CO
NT
RO
L
PA
NE
L
OU
T
D
O
O
R
A
IR
SEN
SO
R
TAN
K
SEN
SO
R
HE
AT
CO
O
L
L
N
R
OOM
T
H
E
R
MO
1
RY-V
2
BL
A
C
1-
L3
(B
L
K
)
W
AC
1-
N
(W
H
T
)
G
G0
1
(G
R
N
)
R
DA
TA
(R
E
D
)
G
G0
2
(G
R
N
)
PO
WE
R SU
PPLY 1
(L
)
B
L
1
Sing
le pha
se AC
230V 50
Hz
W
GR
OU
N
D
IN
G
3
(N
)
I
n=
30
m
A
2
RCC
B/
E
LC
B
230
V
3
0A
~
40
A
R
E
C
T
IF
IC
A
T
ION
CI
RC
UI
T
CO
M
M
UNI
C
A
T
IO
N
CI
R
CUI
T
R
E
C
T
IF
IC
A
T
ION
CI
R
CUI
T
NO
IS
E
FI
LTER
CI
R
CUI
T
WA
T
E
R
PU
M
P
C
IRCU
IT
W
BL
R BR
B
1
4 5 6 7
1
2
3
4
7
1
2
3
4
7
W
BL
R BR
B
M
CN
-P
UM
P1
(W
H
T
)
B
80
3
C
OL
P
CN-
T
H
1
4
3 2
W
A
T
E
R O
U
T
L
ET
T
E
M
P
. S
E
NS
O
R
(T
HE
RM
IS
T
O
R)
RE
F
R
IG
ERA
N
T
T
E
M
P
. SE
NS
O
R
(T
HERM
IS
T
O
R)
W
A
T
E
R I
N
L
E
T
T
E
M
P
. S
E
NS
O
R
(T
HE
RM
IS
T
O
R)
t
ﾟ
t
ﾟ
t
ﾟ
WA
T
E
R
PU
M
P
E
L
E
C
T
R
O
N
IC
CO
NT
RO
L
L
E
R
(MA
IN
)
FU
SE
1
T6.
3A
L
250
V
B
GR
OU
N
D
IN
G
1 2
CN-
T
H
3
t
ﾟ
HE
X W
A
T
E
R O
U
T
L
E
T
T
E
M
P
. S
E
NSO
R
(T
HE
RM
IS
T
O
R)
CN-
O
LP
1
1
4
1
2
3
4
3
2
1
2
3
4
2
TO
OUT
DO
OOR U
NIT
TER
M
IN
A
L
BO
AR
D
CN-
F
LW
S
EN
1
1 2 3 4 5 6
FL
O
W
SEN
SO
R
BL
W
BR
B
BO
IL
ER
C
O
N
T
AC
T
EXTR
A
P
U
M
P
BO
O
S
TER
HE
ATER
SI
G
N
A
L
DE
T
E
CT
IO
N
CI
RC
UI
T
RY-V
3
RO
O
M
TEM
P
.
ZO
N
E
1
O
LP BO
O
S
TE
R
HE
ATER
CN
1
CN
2
CN
3
CN
4
CN
5
CN
6
RY
-C
O
N
T
A
CT
1
SS
R1
SW
1
S
W
2
NO
ISE FI
LTER
C
IRCU
IT
(B
L)
(W
)
(R
)
NO
IS
E
FI
LTER
CI
R
CUI
T
FUS
E
3
T3
.15A L2
50V
G0
3
(G
R
N
)
G
R
EAC
TO
R
L1
(WH
T
)
WW
L2
(W
H
T
)
1
2
1
2
WW
WA
T
E
R
PI
P
ING
BA
SE
PAN
G
WA
T
E
R
PI
PI
N
G
G
CO
NN
EC
TI
N
G
BA
R
SS
R205
SS
R207
SS
R206
WA
T
E
R
P
U
M
P
ZO
NE
1
WA
T
E
R
P
U
M
P
ZO
NE
2
OPT
ION
AL
BL
R
B
W
W
W
W
W
CN-
P
W
R3
G
reen
CN-
P
W
R2
Bl
u
e
CN-
P
W
R4
Bl
a
ck
CN-
CNT
CN-
P
W
R
(B
L
K
)
C
N
203
C
N
202
CN-
CO
M
M
(Y
L
W
)
CN-
P
W
R2
0
2
(Y
L
W
)
AC
L
(
B
L
K
)
A
CN (
W
HT
)
CN-
P
W
R2
0
4
(Y
L
W
)
DCP
(R
E
D
)
DCN (B
L
U
)
EL
EC
T
R
ON
IC
C
O
N
T
R
O
LL
ER
(S
U
B
)
C
N
201
C
N
209
C
N
208
CN2
1
0
CN2
0
6
CN2
0
7
C
N
204
C
N
205
CN-
CNT
(W
H
IT
E
)
5
1
SSR2
04
1
2
3
4
5
2
4
1
3
2
1
1
1
2
1
3
3
1
2
1
SI
G
N
AL
DET
E
CT
IO
N
CI
RCUI
T
SI
G
N
AL
DE
T
E
CT
IO
N
CI
RCUI
T
S
S
R
201
S
S
R
200
S
S
R
203
S
S
R
202
RY1
SO
LA
R W
A
TER
PU
M
P
PO
O
L W
A
TE
R
PU
M
P
ER
RO
R
SI
G
N
A
L
BI
T1
BI
T
2
VC
C
MI
X
IN
G
VALVE
1
NO
P
E
N
C
L
O
S
E
C
L
O
S
E
O
PEN
N
N
MI
X
IN
G
VA
LV
E 2
H
EAT
C
OOL
LN
R
OOM
T
H
E
R
M
O
1
RO
O
M
TH
ER
M
O
2
N
L
C
OOL
H
E
A
T
C1
2
1
1µ 50V
C8
3
0.
1µ
16V
C8
9
1µ 16V
C9
8
1µ 16V
G2
G2
R1
3
6
1k
R
141
6.
49k 1%
12V
G2
5V
12V
5V
C9
2
0.
1µ
16V
R1
3
0
10k
5V
C9
1
220µ 10V
C8
8
1µ 16V
R1
4
0
20k 1%
R1
3
9
20k 1%
R1
2
8
20k 1%
R1
3
5
20k 1%
G2
G2
G2
C9
0
1µ 16V
C8
4
1µ 16V
C8
1
1µ 16V
C7
3
1µ 16V
C7
9
1µ 16V
C9
3
100p 50V
ZD
2
20V
PC
1
A
1
2
4
3
K
LF
3
R1 10k
R2
4
10k
R9
7
10k
5V
C
E
R8
9
10k
5V
_2
20V
G6
SG SIGNAL
DEMAND
SIGNAL
SIGNAL
DC 10V
DC GN
D
WATER TEMP.
ZONE 1
ZONE 1
HEAT/COOL
SWITCH
SWITCH
EXTERNAL
COMP. SW
COMP. SW
SOLAR TEMP.
SENSOR
SENSOR
WATER TEMP.
ZONE 2
ZONE 2
POOL TEMP.
SENSOR
SENSOR
BUFFER TANK
SENSOR
SENSOR
ROOM TEMP.
ZONE 2
ZONE 2
ROOM TEMP.
ZONE 1
ZONE 1
R8
1
10k
R8
6
10k
C6
3
1000p 50V
C6
1
1000p 50V
5V
W
W
W
W
*C
57
1
W
(N
1
)
(L
1
)
R
Sing
le p
has
e A
C23
0V 50
Hz
PO
WE
R SUPP
LY
2
BL
TER
M
IN
AL BO
AR
D
GR
OU
N
D
IN
G
BL
R
CCB
/E
LC
B
80
3
C
OL
P
BL
AC2-
N2
(WHT
)
SI
G
N
A
L
DE
T
E
C
T
IO
N
CI
RC
UI
T
RY-B
OO
STER
BA
C
K
U
P
H
EAT
E
R
(6
kW
)
BL
ACL3
(BLK
)
2
1
2
33
AC2-
L3
(BLK
)
RY-H
T(L
3)
HT1-L3
(RE
D)
R
BL
W
HT1-L2
(OR
G)
AC2-
L2
(YLW
)
RY-H
T(L
2)
W
OL
P
80
3
C
AB
O
Y
O
W
2
2
1
1
O
I
n=
30
m
A
230
V
30
A
~
40
A
C1
2
3
1µ 50V
50
9.2 Outdoor
Unit
3
CN
-V
1
MA
GN
E
T
IC
C
O
IL
(4
-W
AY VAL
VE)
3
BL
3
1
W
AC
-B
LK
02
BL
W
EL
ECT
R
ON
IC C
O
NT
ROL
LE
R (
M
AIN
)
BASE
PAN
HEAT
ER
Y/G
3
FU
SE2
CRANK
C
A
SE
(YEL
LO
W
)
(B
LA
C
K
)
T3.1
5A
L250V
G
UP
PER F
A
N M
O
TO
R
3
CO
M
3
(R
E
D
)
R
1
AC
-W
H
T
02
1
(WH
IT
E
)
RY
-H
T
2
CN
-H
T
2
RY
-H
T
1
CN
-H
O
T
CN
-H
T
1
RE
D
1
CN-
HPS
G
CN-
F
M
2
(WH
IT
E
)
CN-
F
M
1
LO
W
E
R F
A
N M
O
TO
R
(B
LA
C
K
)
(R
E
D
)
(2
-W
AY VAL
VE)
M
M
1
CN-
ACL
RY-
V
1
AC
-B
LK
01
(O
P
T
IO
N
A
L)
4
W
W
RE
LA
Y
6
W
RY
-H
O
T
FG
2
(GR
E
E
N
)
BL
EL
ECT
R
ON
IC C
O
NT
ROL
LE
R (
S
UB)
CN-
ACN
(B
LA
C
K
)
FG
1
(G
REEN)
(W
H
IT
E
)
(B
LA
C
K
)
AC-
B
LK
CN-
B
LK
(B
LA
C
K
)
(W
H
IT
E
)
(B
L
U
E
)
CN-
W
H
T
MA
GN
E
T
IC
C
O
IL
2
1
(WH
IT
E
)
HEA
T
ER
EL
ECTRO
(B
LA
C
K
)
CN-
W
H
T
(WH
IT
E
)
EL
ECTRO
5
NO
ISE F
IL
T
ER
(GR
A
Y
)
CAPACI
T
O
R
1
NO
IS
E
HI
G
H
PRESS
URE
SE
N
S
O
R
2
OU
T
D
OO
R
P
IPE TEM
P
.
SE
N
S
O
R
(T
HERM
IS
TO
R)
DE
FRO
S
T
T
E
M
P
. SENS
O
R
(T
HERM
IS
TO
R)
OU
T
D
OO
R
AI
R
TE
M
P
.
SE
N
S
O
R
(T
HERM
IS
TO
R)
3
1
CO
M
P
RESS
O
R
W
(YEL
LO
W
)
GR
T3.1
5A
L250V
AC-
L
C
O
M
M
UNI
CAT
ION
C
IRC
UI
T
1
BL
R
E
CT
IF
IC
A
T
IO
N
FI
LTE
R
W
(R
E
D
)
DCP
2
C
N
-R
Y
1
SWI
T
CHI
NG
PO
WER
SUPPL
Y
CI
RCU
IT
RECT
IF
IC
AT
IO
N
C
IRC
UI
T
PF
C
C
IRC
UI
T
D
C
N
-I
N
CI
R
CUI
T
A
C
-C
(B
LU
E
)
D
C
N
(B
LA
C
K
)
D
C
N
2
(B
LA
C
K
)
FUSE1
1
4
7
7
4
V
U
U
(
R
E
D
)
P
N
V
(
B
LU
E
)
T
O
IN
D
O
O
R
U
N
IT
(B
LU
E
)
(B
LA
C
K
)
3~
F
G
1
(G
R
E
E
N
)
G
MS
R
D
C
P
-I
N
(W
H
IT
E
)
B
L
(CAPACITOR)
ELECTRONIC CONTROLLER
A
C
-C
(B
LA
C
K
)
B
R
E
A
C
T
O
R
G
R
A
B
L
B
L
D
C
N
-O
U
T
CI
R
CUI
T
W
R
B
B
R
Y
CI
R
CUI
T
C
IRC
UI
T
R
T
E
R
M
IN
A
L
B
O
A
R
D
T
E
R
M
IN
A
L
B
O
A
R
D
2
1
C
N
-D
IS
C47
1µ 6.
3V
R10
2
4.
99
k
1%
t°
5V
E
LE
C
T
R
O
M
A
G
N
E
T
IC
C
O
IL
(B
Y
P
A
S
S
E
X
P
A
N
S
IO
N
V
A
LV
E
)
1
2
3
4
5
6
M
IC
16
IC
16
IC
16
IC
16
IC
16
IC
16
IC
16
IC
15
IC
15
IC
15
IC
15
IC
15
IC
15
IC
15
13
V
GN
D
1
2
3
4
5
6
7
8
9
16
15
14
13
12
11
10
13V
13
V
VC
C
GN
D
1
2
3
4
5
6
7
8
9
16
15
14
13
12
11
10
VC
C
VC
C
G2
*C
203
*D65
*D64
*D63
*D62
E
LE
C
T
R
O
M
A
G
N
E
T
IC
C
O
IL
(M
A
IN
E
X
P
A
N
S
IO
N
V
A
LV
E
)
1
2
3
4
5
6
M
13
V
GN
D
1
2
3
4
5
6
7
8
9
16
15
14
13
12
11
10
13
V
VC
C
D33
D34
D35
D36
GN
D
1
2
3
4
5
6
7
8
9
16
15
14
13
12
11
10
VC
C
VC
C
IC
7
IC
8
IC
8
IC
8
IC
8
IC
8
IC
8
IC
8
IC
7
IC
7
IC
7
IC
7
IC
7
IC
7
G2
13
V
C
N
-T
H
1
1
2
*C
49
t°
*R
1
04
*C
48
*R
10
3
5V
*C
N
-T
H
2
*C
N
-E
V
*C
N
-E
V
2
t°
t°
5V
R1
0
0
15.
0
k
1%
R1
0
1
7.
50
k
1%
C4
6
1µ 6.
3V
C4
5
1µ 6.
3V
1
2
3
4
R1
8
3
4.
7
k
Q
11
e
c
b
13
V
1
R
R
2
bl
ue
C
N
-P
S
W
1
H
IG
H
P
R
E
S
S
U
R
E
S
W
IT
C
H
R
138
5.
6
k
13
V
B
Y
P
A
S
S
E
X
IT
T
E
M
P
.
S
E
N
S
O
R
(T
H
E
R
M
IS
T
O
R
)
E
V
A
E
X
IT
T
E
M
P
.
S
E
N
S
O
R
(T
H
E
R
M
IS
T
O
R
)
t°
t°
*R
38
6
*C
21
5
*C
21
4
5V
*C
N
-T
H
3
*R
38
5
1
2
3
4
1 2 3 4
R
358 20k
R
356 1k
C16
7
1000
p
50V
C2
20
1µ 16
V
5V
*C
16
9
51
10. Printed Circuit Board
10.1 Indoor Unit
10.1.1 Main Printed Circuit Board
AC2-L1
HT1-L2
AC2-L2
CN-OLP1
G02
G03
CN-PWR2
CN-PWR3
AC1-L3
AC1-N
CN1
CN2
CN3
CN4
CN5
CN6
AC2-N1
CN-PWR
AC2-N2
AC2-L3
G01
HT1-L3
CN-TH3
CN-CNT
CN-TH1
CN-FLWSEN
CN-PUMP1
DATA
52
10.1.2 Sub Printed Circuit Board (Optional)
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