Panasonic WH-MXC16G9E8 Service Manual ▷ View online
21
7. Block Diagram
(Water System)
(Refrigerant System)
FUS
E
2
FUSE
3
M
M
SC
MS 3~
RECT
IF
IC
ATIO
NC
IRCU
IT
RECT
IFICA
TIO
N
CIRC
UIT
RE
CT
IFIC
ATIO
N
CIRC
UIT
REL
A
Y
REL
A
Y
PT
C
RE
ACT
O
R
R
E
A
C
T
O
R
C
AP
ACI
T
O
R
RY-P
WR
2
RY-H
T1
HEAT
ER
HEAT
ER
RY-H
T2
RY-H
OT
FU
S
E
2
01
FU
S
E
2
02
FU
S
E
2
03
1
2
3
4
5
NO
IS
E
FI
LT
E
R
4-
W
A
Y
VAL
V
E
RC
CB
L1
FU
S
E
2
M 1~
L2
L3
N
RCCB
L1
L2
L3
N
M 1~
M 1~
RY-BO
O
ST
ER
FU
SE
1
SO
L
A
R
SC
WATER PU
M
P
M
R
Y
-H
T
(
L1)
R
Y
-H
T
(
L2)
R
Y
-H
T
(
L3)
NO
IS
E FI
LT
ER
WATE
R P
UM
P
CIRCU
IT
NOIS
E F
IL
TER
NOIS
E F
ILT
ER
BACKU
P
H
E
A
T
E
R
BACKU
P
H
E
A
T
E
R
2-
W
A
Y
S
VA
L
V
E
3
-W
AYS
VA
L
V
E
SO
L
A
R
3
-W
AYS
VAL
VE
RY-
V
3
RY
-V
2
RY-
V
2
0
1
PO
WER
SU
P
P
L
Y
1
3-
p
h
a
se
A
C
40
0V
5
0H
z
PO
W
E
R
S
U
PP
L
Y
3
3-
ph
as
e
A
C
40
0V
50H
z
22
8. Wiring Connection Diagram
WW
W
W
W
W
1
2
3
1
2
3
TE
RM
IN
AL
BO
AR
D
A
TE
RM
IN
AL
BO
AR
D
TE
RM
IN
AL
BO
AR
D
WA
TE
R
PU
M
P
OPT
IONAL
RC
CB
BL
Y
B
B
RE
AC
TO
R
TR
AN
SFO
RMER
WW
WB
L
BL
R
W
21
21
SW
1
SW
2
Y
G
Y/
G
BL
W
W
BO
BR
R
Y
G
BL
G
R
W
PO
W
ER
SU
PP
LY
1
3-phas
e
AC
400V 50Hz
400V
25
A
l∆
n=
30
m
A
AC
1-L1
(B
LU
)
L2
(W
HT
)
CN
-T
1
(W
HT
)
L1
(W
HT
)
AC
1-L2
(Y
LW
)
AC
1-L3
(B
LK
)
AC
1-
N
(W
HT
)
G0
2
(G
RN
)
FU
SE
1
T6
.3
A L250V
G0
1
(G
RN
)
G0
5
(G
RN
)
G0
7
(G
RN
)
CN
-P
W
R
(B
LK
)
CN
-P
UM
P2
(W
HT
)
CN
-S
OLA
R
(W
HT
)
CN
-S
OL
AR
_B
(IV
OR
Y)
DA
TA
(R
ED
)
PUMP-
L
(RED
)
ACN-
3V
(BLU
)
ACL1-3V
(ORG
)
ACL2-3V
(BRW
)
PUM
P-N
(YLW
)
AC
N
(W
HT
)
AC
L
(B
LK
)
LE
AD W
IRE
FI
XI
NG
FOR OL
P
LE
AD W
IRE FI
XI
NG
FOR HEAT
ER
BL
UE
BL
UE
BL
AC
K
BL
AC
K
OR
AN
GE
OR
AN
GE
BR
OW
N
BR
OW
N
SURG
E
PROTECT
ION
CI
RCUI
T
NO
IS
E
FI
LT
ER
CI
RCUI
T
COMM
UNICAT
ION
CI
RCUI
T
T2 (BLK
)
T1 (BLK
)
3
R
1
RE
CT
IF
ICAT
IO
N
CI
RCUI
T
EL
ECTRONI
C
CO
NT
RO
LL
ER
(M
AI
N)
EL
ECT
RONI
C CO
NT
ROL
LE
R
(S
O
LA
R)
T3
G
G04
(GRN
)
G
G03
(GRN
)
AC2-
L1
(BLU)
HT1-L1
(BRW
)
HT1-L2
(ORG
)
HT1-L3
(RED)
AC2-
L2
(YLW
)
AC2-
L3
(BLK
)
AC2-
N2
(WHT
)
AC
2-
N1
(G
RY
)
AC
L3
(B
LK
)
AC
L-
BOOS
TE
R
(B
RW
)
AC
N-
BO
OS
TE
R
(W
HT
)
CN
-O
LP
1
(W
HT
)
RECT
IF
IC
AT
IO
N
CI
RCUI
T
3
1
1
7
1
7
W W W W W W W
23
22
21
20
19
PU
M
P
SO
LA
R
EX
TE
RN
AL
CO
NT
RO
L
TA
NK
SE
NS
OR
TA
NK
OL
P
RO
OM
TH
ER
MO
STAR
T
BO
OS
TE
R
HE
AT
ER
HE
AT
CO
OL
N
L
OP
EN
CL
OS
E
SO
LA
R 3
-W
AY
VA
LV
E
N
SI
G
NA
L
DE
TE
CT
IO
N
CI
RCUI
T
NOI
SE
FI
LTE
R
CI
RCUI
T
SW
20
1
GR
OU
ND
IN
G
(LA
1)
(LA
2)
(LA
3)
(N
)
SURGE
PROTE
CTI
ON
CI
RCUI
T
RC
CB
BL
BL
BL
GR
400
V 25A
l∆
n=
30m
A
GRO
UND
IN
G
BA
CK
UP
HE
AT
ER
PO
W
ER
SU
PP
LY
2
3-phas
e
AC
400
V
50Hz
(LB
1)
(LB
2)
(LB
3)
(N
)
OL
P
80±
3°
C
BR
2
BR
OL
P
80±
3°C
O
O
OL
P
80±
3°C
33
2
1
1
2
3
4
1
2
3
4
1
R
BL
R
O
Y
BR
B
W
FU
SE
2
20
A 500V
SI
GNAL
DETECT
IO
N
CI
RCUI
T
B
B
OL
P
80±
3°C
1 2
CN
-F
LO
W
(Y
LW
)
CN
-T
H1
(W
HT
)
CN
-T
H3
(W
HT
)
CN
-T
H2
(W
HT
)
CN
-O
LP
2
(W
HT
)
CN
-R
CV
2
(W
HT
)
CN
-V
3
(G
RN
)
CN
-T
HE
RM
O
(W
HT
)
FL
OW
S
W
IT
CH
WA
TE
R O
UT
LE
T
TE
M
P.
S
ENS
OR
(T
HE
RM
IS
TO
R)
W
ATER
IN
LE
T TEMP
. SE
NS
OR
(T
HE
RM
IS
TO
R)
RE
FR
IG
ER
AN
T TE
M
P.
S
EN
SO
R (
TH
ER
M
IS
TO
R)
BL
2
1
1
6
33
BL
11
HE
X WA
TE
R OUT
LE
T T
EM
P.
S
ENS
OR
(T
HE
RM
IS
TO
R)
1
1
1
23
2
1
NOI
SE
FI
LTE
R
CI
RCUI
T
G
14
5
6
7
WB
L
BL
BR
RB
WB
L
BR
RB
RECT
IF
ICAT
IO
N
CI
RCUI
T
M
RE
CT
IF
IC
AT
IO
N
CI
RCUI
T
G0
8
(G
RN
)
G
WA
TE
R
PUM
P
CI
RCUI
T
BL
R
GR
GR
1
1
3
5
1
3
3
52
7
O
OB
L
18
17
16
15
14
13
Y
R
W
W
BL
BL
W
BR
BR
B
Y
R
12
11
10
2-WA
Y
VA
LV
E
N
OP
EN
CL
OS
E
3-WA
Y
VA
LV
E
N
OP
EN
CL
OS
E
9
8
7
SI
GNAL
DET
ECT
IO
N
CI
RCUI
T
TE
RM
IN
AL
BO
AR
D
TER
M
IN
AL
BO
AR
D
CN
-V
2
(W
HT
)
1
3
3
5
3
2
1
6
5
4
RE
D
WH
IT
E
WH
IT
E
1
1
3
2
2
3
BR
OW
N
WH
IT
E
ORA
NG
E
REMARKS: W:
W
HI
TE
O:
O
RA
NG
E
R:
RE
D
B:
BL
UE
BL
:
BAL
CK
Y
:
YEL
LO
W
BR
:
BROW
N
G
:
GREEN
GR
:
G
RAY
YG/
:
YEL
LO
W
/GREE
N
RCCB/
EL
CB
:
RESI
DUAL
CURRENT
CI
RCUI
T B
REAKER/
EART
H L
EAK
AGE CI
RCUI
T
BREAKER
TE
RM
IN
AL
BO
AR
D
REFRI
G
ERANT
SYSTEM
1
2
3
4
5
1
1
R
CN
-R
EM
OT
E2
(W
HT
)
R BR O BL Y
1
1 2 3 4
1 2 3 4
4
CONT
ROL
PANEL
R BR O BL Y
BL
BL
CN
-HT
(W
HT
)
HE
AT
ER
1
3
1
2
1
2
t°
t°
t°
t°
(WAT
ER SYST
EM
)
23
BL
2
L1-
IN
(B
LU
)
FG2
01
(GR
N)
FG2
03
(GR
N)
FG
202
(G
RN)
FU
SE
201
20A
500V
FUSE
2
T3.
15A L25
0V
FUSE
3
T6.
3A L2
50V
FU
SE
202
20A
500V
FU
SE
203
20A
500V
L2-
IN
(Y
LW
)
L3-
IN
(B
LK
)
N-
IN
(W
HT
)
L3-IN
(BLA
CK)
L-IN
(WHI
TE)
L3-OUT
(ORA
NGE)
L2-OUT
(GRAY
)
L3-P
1
(ORA
NGE)
L2-P
1
(WHI
TE)
L1-P
1
(BLA
CK)
L1-P
2
(RED
)
L2-P
2
(BLU
E)
L3-P
2
(YELLOW
)
L3-L
(YELLOW
)
L2-L
(BLU
E)
L1-L
(RED
)
L2-IN
(YELLOW
)
L1-
OU
T
(B
LU
)
L2-
OU
T
(Y
LW
)
L3-
OU
T
(B
LK
)
N-
OU
T
(W
HT
)
CN-
DI
S
(W
HI
TE
)
CN-
RY
2
(GR
EE
N)
CN-
RY
1
(W
HI
TE
)
CN
-V
1
(Y
ELLOW
)
CN-
HO
T
(B
LU
E)
CN-
HT
1
(W
HI
TE
)
CN
-H
T2
(B
LA
CK
)
AC
-B
LK
02
(B
LA
CK
)
AC
-W
HT
02
(W
HI
TE
)
CO
M
3
(R
ED
)
1
1
31
W
NOI
SE
FI
LT
ER
CI
RCUI
T
RE
CTI
FI
CA
TI
O
N
CI
RCUI
T
REC
TIF
ICAT
ION
CIRC
UIT
CO
M
M
UNI
CAT
ION
CI
RCUI
T
SW
IT
CHI
NG
P
O
W
ER
SU
PP
LY
CI
RCUI
T
RY
-H
OT
3
RY
-V
1
3
1
3
1
3
1
RY
-H
T1
RY
-P
W
R2
Y/
G
G
G
G
B
Y
BL
W
B
Y
BL
W
O
GR
GR
O
W
PT
C
O
O
BL
W
O
22
1
1
MA
GN
ET
IC R
EL
AY
RE
AC
TO
R
RE
AC
TO
R
REAC
TO
R
BL
W
O
BL
W
O
WW
R
R
R
R
B
B
B
Y
Y
Y
R
B
Y
CO
M
PR
ESSO
R
(R
ED
) U
(B
LU
E)
V
(YEL
LO
W
) W
R
B
Y
R
B
Y
V
W
P
N
1
4
7
4
7
U
1
HI
GH
PR
ESS
UR
E
SW
IT
CH
R
R
1
EL
EC
TR
O M
AG
NET
IC
C
OI
L
(M
AI
N EXPA
NS
IO
N
VA
LVE)
DISC
HARG
E T
EM
P. S
ENS
OR
(THE
RMIS
TOR)
2
6
W
1
12
CN
-T
H2
(B
LU
E)
CN
-E
V1
(W
HI
TE
)
CN-
FM
1
(W
HI
TE
)
CN-
FM
2
(R
ED
)
CN
-PSW
1
(B
LU
E)
12
CN-
TH
1
(W
HI
TE
)
14
LO
WE
R F
AN
M
OT
OR
UP
PE
R F
AN
M
O
TO
R
3
EL
ECT
RONI
C CO
NT
ROL
LE
R (
MAI
N)
EL
ECT
RONI
C CO
NT
ROL
LE
R (
NF
)
EL
EC
TR
O
M
AG
NE
TIC
C
OIL
(2
-W
AY
VA
LV
E)
EL
EC
TR
O
M
AG
NE
TIC
C
OIL
(4
-W
AY
VA
LV
E)
CO
M
PR
ESSO
R
CR
AN
KC
AS
E
HE
ATER
32
U
V
W
A2
31
R
S
T
A1
4
8
1
2
6
0
M
M
EL
EC
TR
O M
AGN
ET
IC
C
O
IL
(B
YPASS
EX
PAN
SI
ON
VAL
VE
)
6
1
CN-
EV
2
(Y
ELLOW
)
M
M
W
MA
GN
ET
IC R
EL
AY
1
2
3
4
5
3
RY
-H
T2
W
W
R
BASE PAN HEAT
ER
(O
PT
IO
NA
L)
MS 3~
4
HI
GH
PR
ESSU
RE
SEN
SO
R
1
BL
BL
1
2
CN-
HP
S
(R
ED
)
DCP (B
LA
CK
)
DCP (B
LA
CK
)
DCN
2
(R
ED
)
DCN2 (R
ED
)
DCN (W
HI
TE
)
DC
N
(W
HI
TE
)
R
R
t°
OUTD
OOR
AIR
(O
UTL
ET)
TE
MP. S
ENS
OR
(THE
RMIS
TOR)
OUTD
OOR P
IPE
(C
OND.
) T
EM
P. S
ENS
OR
(THE
RMIS
TOR)
DEFR
OST TEMP
. SE
NSO
R
(THE
RMIS
TOR)
t°
t°
CN-
TH
3
(B
LA
CK
)
14
BYPASS
EXIT
TEM
P. S
ENS
OR
(THE
RMIS
TOR)
EVA E
XIT
TEM
P. SEN
SOR
(THE
RMIS
TOR)
t°
t°
t°
RE
M
ARK
S:
W
: W
HIT
E
R
: R
ED
B
: B
LU
E P
: P
IN
K
BL
: B
LA
CK
Y
: Y
EL
LO
W
BR
: B
RO
W
N O : O
RA
NG
E
G
:
G
RE
EN
G
R : G
RA
Y
Y/
G : Y
EL
LO
W
/GR
EE
N
REAC
TO
R
CA
PAC
ITO
R
CA
PAC
ITO
R
CA
PAC
ITO
R
REAC
TO
R
REAC
TO
R
BL
U
E
RE
D
YE
LL
O
W
C
O
M
P
RESS
O
R
T
ERM
INA
L
TE
RM
IN
AL
BO
AR
D
WA
TE
R
SY
ST
EM
(R
EFR
IG
ER
ANT SYSTEM
)
RE
CTI
FI
CA
TI
O
N
CI
RCUI
T
3
1
3
1
V
U
W
24
9. Electronic Circuit Diagram
WW
W
W
W
W
1
2
3
1
2
3
TE
RM
IN
AL
BO
AR
D
A
TE
RM
IN
AL
BO
AR
D
TE
RM
IN
AL
BO
AR
D
WA
TE
R
PU
M
P
OP
TI
O
NA
L
RC
CB
BL
Y
B
B
RE
AC
TO
R
TR
AN
SF
OR
M
ER
WW
WB
L
BL
R
W
21
21
SW
1
SW
2
Y
G
Y/G
BL
W
W
BO
BR
R
Y
G
BL
G
R
W
PO
W
ER
SU
PP
LY
1
3-
ph
as
e
AC
400V 50H
z
400V
25A
l∆
n=
30m
A
AC
1-
L1
(B
LU
)
L2
(W
HT
)
CN
-T
1
(W
HT
)
L1
(W
HT
)
AC
1-
L2
(Y
LW
)
AC
1-
L3
(B
LK
)
AC
1-
N
(W
HT
)
G02 (G
RN
)
FU
SE
1
T6
.3
A L25
0V
G01 (G
RN
)
G0
5
(G
RN
)
G0
7
(G
RN
)
CN
-P
WR
(B
LK
)
CN
-P
UM
P2
(W
HT
)
CN
-S
OL
AR
_B
(IV
OR
Y)
DA
TA
(R
ED
)
PUM
P-L
(RED
)
ACN-
3V
(BLU
)
ACL1
-3V
(ORG
)
ACL2
-3V
(BRW
)
PUM
P-N
(YLW
)
AC
N
(W
HT
)
AC
L
(B
LK
)
SURGE
PROTECTI
O
N
CI
RCUI
T
NOI
SE
FI
LT
ER
CIRCUI
T
COM
M
UNI
CAT
ION
CIRCUI
T
T2 (BL
K)
T1 (BL
K)
3
R
1
RE
CT
IF
IC
AT
IO
N
CI
RCUI
T
EL
ECTRONI
C
CONT
ROL
LER
(M
AI
N)
EL
ECT
RONI
C CONT
ROL
LER
(S
O
LA
R)
T3
G
G04
(GRN
)
G
G03
(GRN
)
AC2-L1
(BLU
)
HT1-
L1
(BRW
)
HT1-
L2
(ORG
)
HT1-
L3
(RED
)
AC2-L2
(YLW
)
AC2-L3
(BLK
)
AC2-
N2
(WHT
)
AC
2-
N1
(G
RY
)
AC
L3
(B
LK
)
AC
L-
BO
OS
TE
R
(B
RW
)
AC
N-
BO
OS
TE
R
(W
HT
)
RECT
IF
IC
AT
IO
N
CI
RCUIT
3
1
23
22
21
20
19
PU
M
P
SO
LA
R
EX
TE
RN
AL
CO
NT
RO
L
TA
NK
SE
NS
OR
TA
NK
OL
P
RO
OM
TH
ER
MO
STAR
T
BO
OS
TE
R
HE
AT
ER
HE
AT
COOL
N
N
L
OP
EN
CLO
SE
SO
LA
R 3
-W
AY
VA
LV
E
N
SI
G
NAL
DET
ECT
IO
N
CIRCUI
T
NO
ISE
FI
LT
ER
CI
RCUI
T
SW
201
GRO
UND
IN
G
(LA
1)
(LA
2)
(LA
3)
(N)
SURG
E
PROTECT
ION
CIRCUI
T
RC
CB
BL
BL
BL
GR
400
V 25A
l∆
n=
30m
A
GRO
UND
IN
G
BA
CK
UP
HE
ATER
PO
W
ER
SU
PP
LY
2
3-phas
e
AC
400
V
50Hz
(LB
1)
(LB
2)
(LB
3)
(N
)
OL
P
80±
3°C
BR
2
BR
OL
P
80±
3°C
O
O
OL
P
80±
3°C
33
2
1
1
2
3
4
1
2
3
4
1
R
BL
R
O
Y
BR
B
W
FU
SE
2
20
A 500
V
SI
GNAL
DETECT
IO
N
CI
RCUI
T
CN
-R
CV
2
(W
HT
)
CN
-V
3
(G
RN
)
1
NO
ISE
FI
LT
ER
CI
RCUI
T
G
14
5
6
7
WB
L
BL
BR
RB
WB
L
BR
RB
RE
CT
IF
IC
AT
IO
N
CI
RCUI
T
M
RECT
IF
IC
AT
IO
N
CI
RCUI
T
G0
8
(G
RN
)
G
WA
TE
R
PUM
P
CIRCUI
T
BL
R
GR
GR
1
3
5
1
3
3
57
O
OB
L
18
17
16
15
14
13
Y
R
W
W
BL
BL
W
BR
BR
B
Y
R
12
11
10
2-WA
Y
VA
LV
E
N
OP
EN
CL
OS
E
3-WA
Y
VA
LV
E
N
OP
EN
CLOS
E
9
8
7
SI
G
NA
L
DE
TE
CT
IO
N
CI
RCUI
T
TE
RM
IN
AL
BO
AR
D
TER
M
IN
AL
BO
AR
D
CN
-V
2
(W
HT
)
1
3
3
5
3
2
1
6
5
4
TER
M
IN
AL
BO
AR
D
REF
RI
G
ERANT
SYST
EM
1
2
3
4
5
1
1
R
BL
BL
CN
-H
T
(W
HT
)
HE
AT
ER
1
3
1
2
1
2
B
B
OL
P
80±
3°C
1
7
W W W W W W W
CN
-T
H1
CN
-T
H3
WA
TE
R O
UT
LE
T
TE
M
P.
S
EN
SO
R (
THE
RM
IS
TO
R)
WA
TE
R I
NLE
T
TE
M
P.
S
EN
SO
R (
THE
RM
IS
TO
R)
RE
FR
IG
ER
AN
T
TE
M
P.
S
EN
SO
R (
THE
RM
IS
TO
R)
1
6
5
4
3
2
HE
X WA
TE
R
OU
TL
ET
TE
M
P.
S
EN
SO
R (
THE
RM
IS
TO
R)
1 2
t°
t°
t°
t°
CN
-T
H2
(W
HT
)
1
2
R BR O BL Y
1 2 3 4
1 2 3 4
CONT
ROL
PANE
L
R BR O BL Y
FL
OW
S
W
IT
CH
BL
33
BL
11
1 2 3 4 5 6 7
12
V_
2
5V
C1
0
0.
1µ 16V
R1
4
1k
R9 10k
R100
1k
R137
1k
R138
1k
C6 100
µ
25
V
C3 1µ 16
V
+
*C
N-
SO
LA
R
CN
-O
LP
1
12V
_2
12V
_2
VC
C
GN
D
IC
9
1/
2W
1/
2W
1/
2W
1/
2W
1/
2W
1/
2W
*R
Y-
HT
(L3)
*R
Y-
HT
(L2)
*R
Y-
HT
(L1)
*J
P8
*R
21
*R
11
*R
22
*R
15
*R
20
*R12
1
2
3
4
5
6
7
8
9
16
15
14
13
12
11
10
CN
-R
EM
O
TE
2
1
2
3
4
12
V_
4
5V
_2
G2
G
2
12
V_
4
R129 4.
3k
R133 4.
7k
1/
4W
C84 0.047µ 25V
1
2
*C
N-
OL
P2
1k
*R
12
7
*C
73
*J
P7
12V
CN
-F
LO
W
(Y
LW
)
2
1
R1
25
10k
C8
3
0.
1µ 16
V
*R
12
1
5V
5V
CN
-T
HE
RM
O
(W
HT
)
13
5V
12V
_4
R25 1k
R23 10k
R1
1
4
2
3
ZD
2
PC
1
G2
G
2
C30 0.01µ 16V
R1
15
20
.0
k
R1
26
20
.0
k
R134 20.
0k
R1
31
20
.0
k
R118 820
C82 220µ 10V
C1 1µ 16V
C7
0
1µ 16
V
C72 1µ 16V
C75 1µ 16V
C8
1
1µ 16
V
C80 1µ 16V
5V
(WAT
ER SYST
EM
)
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