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CU-3C20DKH
SCHEMATIC DIAGRAM 6/6
AC(BLU)
T(BLK)
T(BLK)
TRANSFORMER
RED
RED
CN-T
VH-2
TO
L
POWER SOURCE
AC240- 230-220 V
N
50 Hz
A1
1
TO
A1
2
INDOOR
UNIT A1
3
(BLUE)
A2
1
(BLUE)
TO
A2
2
INDOOR
UNIT A2
3
B
1
TO
B
INDOOR
2
UNIT
3
OUTDOOR UNIT
TERMINAL
YELLOW
BLUE
RED
MARK
COMPRESSOR
TERMINAL
COMPRESSOR A
YEL
OLP A
1
3
BLU
RED
CAPACITOR
BLU
COMP-A
AC(WHT)
COMP-B
(WHT)
(YEL)
P
L
L
P
RY-CA
RY-CB
FUSE
3.15A
250V
ZNR1
511
IC3
DB101
78M12H
S1VB20
I
O
12V
C1
2200
G
35V
X1
4KHz
PC1
TLP620-1G4
R1
(RED)
47k 2W
AC
1
4
(RED)
AC
2
3
R2
C9
R8
R7
47k 2W
10
1k
PC2
10k
16V
R3
TLP620-1G4
47k 2W
AC
1
4
AC
2
3
R4
C10
R10
R9
47k 2W
10
PC3
1k
10k
16V
R5
TLP620-1G4
(YEL)
47k 2W
AC
1
4
J2
(YEL)
AC
2
3
R6
C11
R12
R11
47k 2W
10
1k
10k
16V
SW1
MANUAL
AUTO
TEST
2
1
NH-2
YEL
COMPRESSOR B
OLP B
1
V-COIL COMPLETE
A
B
3
BLU
RED
CAPACITOR
BLU
(GRN)
VH7-4
CN-V
1
3
5
7
CR2
CR3
120
120
0.033
0.033
RY-VA1
RY-VA2
IC2
78N05
I
O
5V
C2
C3
GND
470
100
G
25V
16V
IC1
A52C401828CP
28
Vdd
RESET
27
OSC 1
IRQ
R15
150k
26
OSC 2
PA 7
C12
0.01
25
TCAP/PD 7
PA 6
24
TCMP
PA 5
23
PD 5
PA 4
22
PC 0
PA 3
21
PC 1
PA 2
20
PC 2
PA 1
19
PC 3/AD 3
PA 0
18
PC 4/AD 2
PB 5/SDO
R17
1k
17
PC 5/AD 1
PB 6/SDI
16
PC 6/AD 0
PB 7/SCK
15
PC 7/VREFH
Vss
R18
1k
RA1
10k x 5
73
CS-C9DKZW CU-2C18DKH / CS-C9DKZW CU-3C20DKH
YEL
FAN
MOTOR
GRY
BLU
ELECTRONIC
CAPACITOR
BLU
CONTROL DEVICE
FM(YEL)
FM(BLU)
CR1
120
0.033
RY-FM
ZD1
R28
7.5EL1
R16
100k
1k
R27
10k
C7
R25
1
6.8k
50V
Q7
R26
C6
2SC1740S
Q6
6.2k
0.01
2SC1740S
R13
10k
RY-FM
Q3
DTC113ZS
1
D11
1k
10k
2
3
Q2
4
RY-CB
2SC1741R
470
5
50V
R21
D8
R22
2.2k
RA15-01
10k
6
7
RY-CA
R19
2.2k
470
8
35V
D7
R20
RA15-01
10k
9
Q1
10
2SC1741R
RY-VA2
11
12
D9
1k
10k
R14
13
10k
Q4
14
DTC113ZS
RY-VA1
D10
1k
10k
Q5
DTC113ZS
R24
82
2W
C4
R23
82
2W
C5
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