Circuit diagrams
38
Domestic air conditioner
12. Circuit diagrams
+5V
+5V
1-12-SCL
1-11-SDA
EEPROM
+5V
+5V
IR
SRCK
RCK
SER
COM3
COM2
GND
+5V
+12V
A
B
C
D
+12V
+5V
+5V
/
12V
1-12-SCL
1-15-RSTEP_A
1-11-SDA
IR
RST
MODE
+5V
1B
1
2B
2
3B
3
4B
4
5B
5
6B
6
7B
7
E
8
COM
9
7C
10
6C
11
5C
12
4C
13
3C
14
2C
15
1C
16
1-MODE
+5V
1-6-RST
1-6-RST
+5V
+12V
+12V
1B
1
2B
2
3B
3
4B
4
5B
5
6B
6
7B
7
E
8
COM
9
7C
10
6C
11
5C
12
4C
13
3C
14
2C
15
1C
16
1-16-VSP
A
B
C
D
12V
1-
17
-R
ST
EP
_B
1-
18
-R
ST
EP
_C
1-
19
-R
ST
EP
_D
+5V
RX
TX
GND
+5V
+5V
+15V
+15V
+5V
+5V
+12V
+5V
N6
SS8050LT1
N7
SS8050LT1
D11
RLS4148
D12
RLS4148
+5V
+5V
+5V
+5V
RO
O
M
PIP
E
U-home
1 , 2
0011800323A
V1.0
1
2
3
4
CN35
5267-04A(
-
)
V
R
EF
61
K
I0
/A
N
8/
P1
0
49
A
N
7/
P0
0
50
A
N
6/
P0
1
51
A
N
5/
P0
2
52
A
N
4/
P0
3
53
A
N
3/
P0
4
54
P6
2
55
P6
1
56
C
LK
1/
A
N
2/
P0
5
57
D
A
0/
A
N
1/
P0
6
58
V
SS
/A
V
SS
59
D
A
1/
A
N
0/
P0
7
60
V
C
C
/A
V
C
C
62
SS
O
/P
37
63
SS
C
K
/S
C
L/
P3
5
64
P33/SSI
1
P34/SDA/SCS
2
MODE
3
P43/XCIN
4
P44/XCOUT
5
RESET
6
P47/XOUT
7
VSS/AVSS
8
P46/XIN
9
VCC/AVCC
10
P54/TCIOD
11
P53/TCIOC
12
P52/TCIOB
13
P51/TCIOA/TCTRG
14
P50/TCCLK
15
P27/TDIOD1
16
(INT2)/P32
45
P1
5/
R
X
D
0/
(T
R
IO
)/(
IN
T1
)
26
P1
4/
TX
D
0
27
P8
6
28
P8
5/
TF
O
12
29
P8
4/
TF
O
11
30
P8
3/
TF
O
10
/T
FI
31
P8
2/
TF
O
02
32
TFO01/P81
33
TFO00/P80
34
TEO/P60
35
INT0/P45
36
TXD1/INT2/P66
37
RXD1/INT3/P67
38
(CLK1)/CLK2/P65
39
RXD2/P64
40
TXD2/P63
41
TBO/P31
42
TAO/P30
43
KI3/AN11/P13
46
KI2/AN10/P12
47
P2
6/
TD
IO
C
1
17
P2
5/
TD
IO
B
1
18
P2
4/
TD
IO
A
1
19
P2
3/
TD
IO
D
0
20
P1
7/
TA
IO
/IN
T1
24
P1
6/
C
LK
0
25
KI1/AN9/P11
48
P2
0/
TD
IO
A
0/
TD
C
LK
23
P2
1/
TD
IO
B
0
22
(INT1)/P36
44
P2
2/
TD
IO
C
0
21
IC3
R5F212A7SNFA -
R3
2K
R11
2K
R10
10K
R15
10K
R91
10K
R94
10K
R103
10K
R54
10K
R29
10K
R30
10K
R33 560
R57
10K
R98
10K
R
11
9
10
K
R100
10K
R101
10K
R35
1K
R24
1K
R25
1K
R27
20
K
±1
%
R28
3.
3K
±1
%
R16
1K
R13
1K
R18
1K
R20
1K
R21
330
R22
1K
R113
10K
R56
10K
R110
10K
R69
1K
R66
10K
R65
10K
R63
10K
R64
27
R62 10K
R67 10K
R68
4.7K
R508
1K
R507
10K
R506
10K
R14 10K
R19
1K
R71
100
R72
100
R73
10K
R116
390
R115
10K
R55
10K
R51
10K
R52
10K
R49
2.7K
R23
10K
R26
1K
R89
1K
R87
1K
R88
1K
R86
1K
R85
1K
R84
1K
R505
1K
R2
10K
R5
1K
R504
1K
R41
1K
R44
1K
R45
1K
R46
1K
R38
1K
R82
1M
R48 220
R50
2K
R92
10K
C4
100nF
C9
10nF
C10
10nF
C5
100nF
C28
10nF
C15
1nF
C45
100nF
C42 100nF
C1
100nF
C12 100nF
C6
100nF
C11
100nF
C33 100nF
C17
100nF
C19
1nF
C16
100nF
C26
10nF
C37
1nF
E1
100uF-16V
E3
4.7uF-50V
E4
4.7uF-50V
E2
100uF-16V
E14
4.7uF-50V-105
E15
47uF-50V-105
BUZZ1
PKM13EPY-4002
1
2
3
4
5
6
7
8
9
10
C
N
50
1
B
10
B
-P
H
-K
-S
(
-
)
1
2
3
4
CN6
B4B-XH-A(
-
)
1
2
3
4
5
6
7
8
CN7
B8B-PH-K-S(
-
)
1
2
3
4
5
6
7
CN9
B5P7-XH-A-
-
1
2
3
4
5
CN31
B5B-XH-A(
-
)
1
2
CN48
B2B-XH-A-R(
-
)
1
2
3
CN36
B3B-XH-A(
-
)
A0
1
A1
2
A2
3
GND
4
SDA
5
SCL
6
WP
7
VCC
8
IC4
24C04
1
2
JP1
TJC8-02-
1
2
3
4
JP4
TJC8-04-
1
2
3
4
JP3
TJC8-04-
SW1
TSVC-1
E11
100uF-25V
R74
1K
1
2
3
4
5
CN12
B5B-PH-K(
-
)
+5V
C21
100nF
C31
100nF
C34
10
0n
F
C35
1nF
1-13-BUZZ
1-14-POW
2-POWER_ON
+12V
1-16-VSP
1-
26
-P
G
-B
A
C
K
1-26-PG-BACK
1-17-RSTEP_B
1-18-RSTEP_C
R40
1K
1-19-RSTEP_D
1-
20
-L
ST
EP
_A
1-20-LSTEP_A
1-
21
-L
ST
EP
_B
1-21-LSTEP_B
1-
22
-L
ST
EP
_C
1-22-LSTEP_C
1-
23
-L
ST
EP
_D
1-23-LSTEP_D
1-
24
-U
ST
EP
_A
1-24-USTEP_A
1-
25
-U
ST
EP
_B
1-25-USTEP_B
A
B
C
D
12V
1-
27
-U
ST
EP
_C
1-27-USTEP_C
1-
28
-U
ST
EP
_D
1-28-USTEP_D
2-
29
-D
A
2-
30
-D
B
2-
31
-D
C
2-
32
-D
D
2-DSTEP_A
2-DSTEP_B
2-DSTEP_C
2-DSTEP_D
1
2
3
4
5
CN11 B5B-PH-K(
-
)
+12V
2-33-HEAT
2-34-FLZ
2-35-ST
2-36-WF
1-37-DISPSEL1
1-37-DISPSEL1
R5091K
1-
53
-D
IS
PS
EL
2
1-53-DISPSEL2
J11
J33
1-39-SWITCH
1-39-SWITCH
1-41-TXD
1-40-RXD
1-
41
-T
X
D
1-
40
-R
X
D
1-42
1-42
1-43
1-43
1-45-IR
1-
49
-S
ER
1-
51
-S
R
C
K
1-
50
-R
C
K
1-47-ROOM
1-46-PIPE
R114
10K
1-49-SER
1-50-RCK
1-51-SRCK
C30
100nF
1-
52
-C
H
K
/S
_T
1-52-CHK/S_T
1-
54
1-
55
1-
56
1-
60
J4
C32 100nF
R34
1K
J8
R99
10K
1-
58
1-
57
1-58
1-57
R95
10K
R97
10K
1
3
2
XT1
8M
±0
.5
%
C36
1nF
+12V
C50
1nF
C49
1nF
C48
1nF
C47
1nF
C46
1nF
+310V
220V_L
L1
LB2271(32mH-0.35A)
L
~220VAC
N
D21
R
LS
41
48
+15V
+310V
R206
270 -2W
R004
2.2K
R205
560
R203
100 -1206
R202
100 -1206
+12V
+15V
IC10
TLP421
R78
47K-2W
D206
FR106(1A-800V-500ns)
D6
1N5399
D8
1N5399
D7
1N5399
D9
1N5399
D20
FR
10
6(
1A
-8
00
V
-5
00
ns
)
D19
US1M( 1A-1000V-75ns
D008
ER302(3A-200V-35ns)
ZD001
1N
47
46
A
(1
8V
-1
W
ZD202
1N4742A(12V-1W)
ZD003
1N4742A(12V-1W)
+5V
H-25*15
HS1
R019
47 -1/2W
NTC1
SCK084R72
INPUT
1
G
N
D
2
OUTPUT
3
IC6 L7805CV 1.5A-5V
15V-100mA
12V-900mA
R209
100 -1206
E7
10
0u
F-
45
0V
-1
05
C2
104-630VDC
C23
103-630VDC
CY5
2.2nF-250VAC
C009
102-1000V
E204
10
00
uF
-2
5V
-1
05
E207
47
0u
F-
16
V
-1
05
CY1
2.2nF-250VAC
CY2
2.2nF-250VAC
E8
22
uF
-5
0V
-1
05
C004
10
pF
-1
K
V
R61
1.5 -1/2W
S
1
B
R
2
FB
4
V
C
C
5
N
C
6
D
/S
T
7
D
/S
T
8
G
N
D
3
IC9
A6059H
R77
10
-1
20
6
C7
100nF
C18
100nF
C8
100nF
C13
100nF
C010
1nF
CX1
100nF-275VAC
CX2
100nF-275VAC
CY6
4.7nF-250V
E9
47
uF
-5
0V
-1
05
1
CN17
D250
1
CN21
14AWG
250±5mm
;
:AMP 175022-1
1
CN52
14AWG;
:210±5mm;
: ;
:AMP 170328-1
1
CN21'
D250
1
CON2
18AWG;
360±10mm;
;
;
177915-2
1
CON1
1
CON3
FUSE1
T3.15A/250VAC
3
4
1
2
K12
OJE-SS(H)-112L(D)M
N001
KTC8050
4
7
3
6
5
1
T1
BCK-6-FE1901H/ 19ES-X58
RV1
TVR14561*
R80
1.5K
1
CN21'1
D250
2-DSTEP_A
2-DSTEP_B
2-DSTEP_C
2-DSTEP_D
+12V
D
16
R
LS
41
48
D
13
R
LS
41
48
D
14
R
LS
41
48
D
15
R
LS
41
48
N5
SS8050LT1
N4
SS8050LT1
N3
SS8050LT1
N2
SS8050LT1
R127 10K
R125 10K
R123 10K
R121 10K
R126 1K
R124 1K
R122 1K
R120 1K
+12V
L
220V-L
220V-N
D
4
R
LS
41
48
D10
RLS4148
2-36-WF
2-35-ST
L
220V_L
2-34-FLZ
2-33-HEAT
HEAT
+12V
220V-L
220V_L
1
2
3
CN1
B3P5-VH-3(
-
)
220V_N
2-POWER_ON
1
CN23
D250
N1
2SC2412K
R1 4.7K
R4 10K
N17
2SC2412K
R6 4.7K
R9
10K
3
4
1
2
K11
OJE-SS(H)-112L(D)M
D40
R
LS
41
48
D3
RLS4148
3
4
1
2
K2
OJE-SS(H)-112L(D)M
N9
2SC2412K
R502 4.7K
R503
10K
3
4
1
2
K3
835L-1AB-C
N8
2SC2412K
R500 4.7K
R501
10K
2-29-DA
2-30-DB
2-31-DC
2-32-DD
1
HP2
1
HP1
3
4
1
2
K1
G4A-1A(-E)
