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53
9. Electronic Circuit Diagram
9.1 Indoor
Unit
FU
S
E1
T6
.3
A L
250
V
AC
1-
L3
(B
LK
)
BL
W
WW
G
WW
BL
W
(L
)
(N)
AC
T-
N
(W
HT
)
L2
(W
HT
)
L1
(W
HT
)
G0
3
(G
R
N)
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
CN-
P
UM
P1
(W
HT
)
G
G0
1
(G
RN
)
G
G0
2
(G
RN
)
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
R
DA
TA
(R
ED
)
FU
S
E3
T3
.1
5A
L2
50V
NO
IS
E F
ILT
ER
CIRC
U
IT
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
BA
CK
UP
HE
AT
ER
(3
kW
)
OL
P B
O
OS
TE
R
HE
AT
ER
RE
AT
O
R
NO
IS
E
FI
LT
ER
CIRC
U
IT
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
1
2
1
2
1
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
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
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
-CN
T
(W
HT
)
CN
-C
O
M
M
(Y
LW
)
5
1
2
3
4
W W W W
CN
-P
W
R
(B
LK
)
AC
N
(W
H
T)
AC
L
(B
LK
)
1
3
BL
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
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
W
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
K
A
5V
C123 1u 50
V
PC
1
R2
4
10
k
10k
R
1
1
2
OL
P
80
±3
°C
CN
-O
LP
1
1
2
B
B
IC9
1
2
3
4
5
6
7
G3
16
15
14
13
12
11
10
*R2
2
*J
P8
*R1
1
*R2
1
*R1
2
*R2
3
*R1
6
*R
Y-
H
TL
3
12
V
_2
*R
Y-
HT
L2
FL
O
W
SE
NS
O
R
CN
-F
LW
SE
N
4
1
2
3
4
1
W BR
BL B
C9
2
0.
1u 16v
R1
3
10
k
5V
CN
-P
W
R
4
Bl
ac
k
C
N-
PW
R204
1 2 3
2
1
W
W
5V
_2
5V
5V
_2
*R2
80
C2
01
220
u
10
V
CN
-P
W
R
3
G
reen
DC
P
Bl
ue
DC
N
Re
d
3
1
B
R
20
V
R8
6
10
k
R8
1
10
k
C4
8
0.
1u
16
V
L4
C6
1
1000
p
50
V
C6
3
1000p 50V
5V
_2
5V
5V
C220 22
0u
10
V
C2
19 1u 16V
C2
17 1u 16V
C215 1u 16
V
C214 1u 16V
C2
42 1u 16V
C2
23 1u 16V
R2
68
6.
49
k
1%
R2
60
6.
49k 1%
R252 6.
49k 1%
R234 6.
49
k
1%
C2
18 1u 16V
5V
R2
61
6.
49
k
1%
1/
10W
R2
45
6.
49
k
1%
5V
C2
38 1u 16V
R2
63
1%
1/
10
W
R266 8.
2k 1%
C2
39
220
0p
50
V
ZD
20
2
R264 10
k
1%
R267 47
k
1%
R2
69
374k 1%
L2
03
L2
04
5V
12
V
5V
CN
-P
W
R2
02
CN
-P
W
R
2
Bl
ue
1
1
2
3
4
1
2
3
4
2
1 2
W
W
G6
C293 1u 50
V
C244 0.
01
u
50
V
C2
48
1000
u
25V
IC
204
GN
D
OU
TP
U
T
IN
P
UT
31
2
C2
45
330
0u
35
V
C294 1u 50
V
ZD
203
R275 10
k
G2
12
V
*R
27
8
*R
27
9
G2
20V
G2
K
A
K
A
R1
35
20k 1%
R1
32
20
k
1%
R1
28
20k 1%
R1
39
20
k
1%
R1
40
20k 1%
R1
43
6.
49k 1%
R1
41
6.
49
k
1%
R136 1k
C8
3
0.
1u
16
V
C8
9
1u 16
V
G2
G2
G2
G2
G2
+
C9
8
1u 16
V
C9
1
22
0u
10V
C8
8
1u 16V
C121 1u 50
V
C9
0
1u 16
V
C8
4
1u 16V
C8
1
1u 16
V
C7
9
1u 16
V
C7
3
1u 16
V
G2
5V
5V
5V
12
V
1
2
3
4
4
3
2
1
R
EC
TIF
IC
AT
IO
N
CI
RCU
IT
NOI
SE
FI
LT
ER
CI
RC
UI
T
*R
Y-
H
TL
1
L3
12V
1 2 3 4
C2
22
1000
p
50
V
C2
21
1000
p
50
V
C282 22
0u
10
V
5V
*R
26
5
1%
*C
N205
54
9.2 Outdoor
Unit
9.2.1
WH-UD03HE5-1 WH-UD05HE5-1
1
(BLACK)
2
(WHITE)
3
(RED)
RED
DATA (RED)
ELECTRONIC CONTROLLER
WHT
AC-WHT (WHT)
GRN
FG2 (GRN)
ORG
1
HT1 (ORG) RY-HT1
ORG
2
1
1
3
3
5
2
ACN1 (ORG)
BLU HT2 (BLU)
RY-HT2
BLU ACN2 (BLU)
IC19
BLK
AC-BLK
(BLK)
CN-MTR2
(WHT)
CN-MTR1
FUSE103
(20A 250V)
RAT2
(GRY)
RAT1
(GRY)
GRY
REACTOR
GRY
TERMINAL
BOARD
TO INDOOR UNIT
COMMUNICATION
CIRCUIT
GRN
FG1 (GRN)
FUSE104
T3.15A L250V
FU
SE
10
1
T3
.1
5A
L2
50
V
NOISE FILTER
CIRCUIT
FAN
MOTOR
CRANKCASE
HEATER
BASE PAN
HEATER
OPTIONAL
MS
3 ~
MS
3 ~
W
U
V
V
10
14
16
16
Q1
U
P
N
V
W
U (RED)
V (BLU)
W (YLW)
RED
BLU
YLW
BLU
YLW
RECTIFICATION
CIRCUIT
SWITCHING
POWER SUPPLY
CIRCUIT
RECTIFICATION
CIRCUIT
PFC
CIRCUIT
DISCHARGE TEMP.
SENSOR (50kΩ 3950)
CN-DIS
t°
1
2
EVAPORATOR EXIT TEMP.
SENSOR (4.96kΩ 3800)
CN-TH3
t°
1
2
COMPRESSOR
3
1
ELECTRO-MAGNECTIC COIL
(4-WAY VALVE)
CN-HOT
ELECTRO-MAGNECTIC COIL
(EXPANSION VALVE)
CN-STM
6
5
4
3
2
1
M
RED
BLK
WHT
HIGH PRESSOR
SENSOR
CN-HPS
(RED)
1
1
2
3
3
4
1
2
3
4
5
5V
+
G2
G2
C186
C188
G2
C187
R313
R312
R311
G2
*C178
CN-TH1
OUTDOOR AIR TEMP. SENSOR (15kΩ 3950)
PIPING TEMP. SENSOR (4.96kΩ 3800)
t°
t°
1
2
3
4
4
5V
G2
+
C88
G2
C10
R12
R11
G2
C9
COMPRESSOR TEMP. SENSOR (50kΩ 3950)
CN-TANK
t°
1
3
3
G2
C5
G2
R1
5V
4V
e
c
b
D23
D20
R33
R32
Q24
RY-HT1
RY-HT2
*RY-FM
C174
13V
13V
13V
IC4
VCC
GND
16
1
9
15
13V
14
13
12
13
12
11
10
10
2
3
4
5
3
4
5
6
7
7
8
D73
D75
D74
D76
13V
IC5
VCC
1
9 16
15
14
13
12
14
13
12
11
2
3
4
5
3
4
5
6
13V
G2
G2
G2
R455
R466
R465
CN3
CN4
C244
C245
C246
5V
1 2
1 2
5V
G2
G2
G2
G2
G2
R101
C92
C90
C91
R107
G2
G2
CN1
1 2 3
CN2
1 2 3
5V
+
G2
Sensor (Thermistor)
Characteristics
70
60
50
40
30
20
10
0
-10
0
10
Temperature (
o
C)
R
esi
st
an
ce
(k
Ω
)
20
30
40
50
1
2
2
1
2
Outdoor Air Sensor
Outdoor Heat Exchanger
Sensor
Outdoor Heat Exchanger
Sensor
Compressor Temp. Sensor
(Thermistor) Characteristics
70
60
50
40
30
20
10
0
20
40
60
Temperature (
o
C)
R
esi
st
an
ce
(k
Ω
)
80
100
120
140
55
9.2.2
WH-UD07HE5-1 WH-UD09HE5-1
Sensor (Thermistor)
Characteristics
70
60
50
40
30
20
10
0
-10
0
10
Temperature (
o
C)
R
esi
st
an
ce
(k
Ω
)
20
30
40
50
1
2
2
1
2
OutdoorAir Sensor
Outdoor Heat Exchanger
Sensor
Outdoor Heat Exchanger
Sensor
Compressor Temp. Sensor
(Thermistor) Characteristics
70
60
50
40
30
20
10
0
20
40
60
Temperature (
o
C)
R
esi
st
an
ce
(k
Ω
)
80
100
120
140
( MAIN EXPANSION VALVE)
ELECTRO MAGNETIC COIL
C84
0.047u
25V
13V
IC7
VCC
GND
16
1
9
15
14
13
12
13
12
11
10
2
3
4
5
4
5
6
7
8
GND
8
D3
3
D3
4
D3
5
D3
6
13V
IC8
VCC
1
9 16
15
14
13
12
14
13
12
11
2
3
4
5
3
4
5
6
10
7
G2
M
13V
W
1
RECTIFICATION
1
MS
3
Y
B
R
(OPTIONAL)
CIRCUIT
REACTOR
R
W
2
3
3
(WHITE)
2
COMPRESSOR
BL
TERMINAL
T3
.15A L250
V
R358
20k
C220
1u
16V
FU
SE2
CIRCUIT
1
1
3
(WHITE)
BOARD
Y
B
R
G
(WHITE)
6
CIRCUIT
NOISEFILTER
SUPPLY CIRCUIT
2
(BLACK)
AC-BLK
(BLACK)
FG2 (GREEN)
FG1 (GREEN)
CN-BLK
(BLACK)
CN-ACL
(WHITE)
ELECTRONIC CONTROLLER (SUB)
BL
BL
BL
SWITCHING POWER
5
W
(BLACK)
1
4
W
GR
R
CAPACITOR
B
CN-ACN
(BLACK)
BL
DCN-OUT
(BLACK)
DCN-IN
(BLUE)
AC-C
(WHITE)
DCP-OUT
DCN2
FG1
(GREEN)
(BLACK)
(CAPACITOR)
ELECTRONIC CONTROLLER
3~
W
V
U
(YELLOW)
(BLUE)
(RED)
W
V
U
N
P
FAN MOTOR
M
7
4
G
BL
T3.
15
A L25
0V
FU
SE
1
CN-FM1
BL
1
(BLACK)
DCN
(BLUE)
AC-C
(RED)
DCP
1
CIRCUIT
RECTIFICATION
W
(GRAY)
2
1
AC-L
(WHITE)
CN-RY1
(WHITE)
CN-WHT
(BLACK)
4
3
2
1
3
AC-BLK01
CIRCUIT
PFC
NOISE
FILTER
CIRCUIT
RY-HOT
(RED)
CN-HPS
(WHITE)
CN-HT1
(BLUE)
RY-HT1
3
1
RY-HT2
CN-HOT
HEATER
3
R
CN-WHT
(RED)
COM3
SENSOR
HIGH PRESSURE
UNIT
INDOOR
TO
(4-WAY VALVE)
MAGNETIC COIL
HEATER
CRANKCASE
AC-WHT02
CN-HT2
BL
BL
W
1
3
BASE PAN
ELECTRO
RELAY
REACTOR
AC-BLK02
(BLACK)
COMMUNICATION
CIRCUIT
ELECTRONIC CONTROLLER (MAIN)
2
G
5V
+
*C169
t˚
TA
NK
T
EM
P.
THE
R
MI
ST
OR
(5
0k
Ω
39
50)
1
3
*CN-TANK
R363
4.99k
1%
1/10W
5V
DI
SCHA
RG
E T
EM
P.
S
ENS
O
R
(T
HE
RM
IST
O
R)(
50k
Ω
395
0)
CN-DIS
t˚
2
1
R102
4.99k
1%
1/10W
C47
1u
6.3V
5V
CN-TH1
AI
R T
EM
P.
SE
NS
O
R
(T
HE
RM
IST
O
R)(
15k
Ω
395
0) t˚
t˚
SE
N
SO
R (
THE
RM
IST
O
R
(4
.9
6k
Ω
38
00)
1
4
O
U
TD
O
O
R
PI
PE T
EM
P.
5V
C46
1u
6.3V
C45
1u
6.3V
R101
7.50k
1%
1/10W
R100
15.0k
1%
1/10W
EV
A EX
IT
T
EM
P.
SE
NS
OR
(T
HE
RM
IST
O
R)(4
.9
6k
Ω
3
800) t˚
2
1
5V
*R386
*C215
R
R
1
2
HIGH PRESSURE SWITCH
(blue)
CN-PSW1
13V
5V
e
c
b
C65
0.047u
25V
R140
10k
4.7k
D15
10k
R138
5.6k
R139
5.6k
*CN-TH3
*CN-EV
56
10. Printed Circuit Board
10.1 Indoor Unit
10.1.1 Main Printed Circuit Board
G01
AC1-L3
DATA
AC1-N
CN1
CN2
ACL3
AC2-L3
CN-PWR
AC2-N2
HT1-L3
L2
G03
G03
L1
CN-PUMP1
CN-TH3
CN-TH1
CN-FLWSEN
CN-PWR4
CN-PWR2
CN-PWR3
CN-CNT
CN-OLP1
G02
CN3
CN4
CN5
CN6
Click on the first or last page to see other WH-SDC03H3E5-1 / WH-SDC05H3E5-1 / WH-SDC07H3E5-1 / WH-SDC09H3E5-1 / WH-UD03HE5-1 / WH-UD05HE5-1 / WH-UD07HE5-1 / WH-UD09HE5-1 service manuals if exist.