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YH9FXH12BAH FX Series
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Circuit Diagrams - York YH9FXH12BAH FX Series Service Manual
High wall fixed r-410a 60hz
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12. Circuit diagrams
+5V
4
+5V
JP3
3
RST
R3
2
MODE
2K
1
TJC8-04-
R11
1-6-RST
2K
C4
R10
R15
10K
10K
100nF
+5V
100nF
+5V
BUZZ1
PKM13EPY-4002
+12V
R48
220
R50
E11
+12V
2K
100uF-25V
C12 100nF
9
8
+12V
COM
E
10
7
CN12
7C
7B
12V
2-POWER_ON
11
6
1
6C
6B
A
12
5
2
5C
5B
B
13
4
3
4C
4B
14
3
C
4
3C
3B
D
15
2
5
2C
2B
16
1
1C
1B
B5B-PH-K(
-
)
+12V
B5B-XH-A(
-
)
C42 100nF
CN31
12V
5
+12V
A
9
8
4
COM
E
10
7
B
3
7C
7B
11
6
C
2
6C
6B
12
5
D
1
5C
5B
13
4
4C
4B
14
3
12V
3C
3B
10
+12V
15
2
D
2C
2B
9
16
1
C
1C
1B
8
B
7
A
6
5
2-DSTEP_A
4
CN9
2-DSTEP_B
3
7
2-DSTEP_C
2
6
2-DSTEP_D
1
5
4
5
3
4
2
3
1
+310V
2
B5P7-XH-A-
-
1
+12V
CN11 B5B-PH-K(
-
)
CN52
1
14AWG;
:210±5mm;
: ;
:AMP 170328-1
CN17
1
D250
220V_L
L
FUSE1
LB2271(32mH-0.35A)
T3.15A/250VAC
CX1
~220VAC
RV1
TVR14561*
CN21
1
100nF-275VAC
14AWG
250±5mm
;
:AMP 175022-1
CN21'
1
N
D250
CN21'1
1
D250
220V_L
220V-L
+12V
K12
D21
CN1
220V_N
1
2
OJE-SS(H)-112L(D)M
3
B3P5-VH-3(
-
)
K11
D40
OJE-SS(H)-112L(D)M
CN23
1
2-POWER_ON
D250
D3
RLS4148
CON2
K1
1
G4A-1A(-E)
+12V
18AWG;
360±10mm;
;
;
177915-2
1
CON1
K2
CON3
1
OJE-SS(H)-112L(D)M
HP2
1
K3
D10
RLS4148
HP1
1
835L-1AB-C
HEAT
220V-N
L
220V_L
L
220V-L
+5V
+5V
R30
+5V
R57
R98
C11
10K
10K
10K
IC4
100nF
R29
1
8
10K
A0
VCC
2
7
R99
A1
WP
3
6
10K
A2
SCL
4
5
GND
SDA
+5V
JP4
J8
24C04
1
EEPROM
2
1-12-SCL
C31
3
1-11-SDA
4
100nF
TJC8-04-
R33 560
R95
R97
10K
10K
+5V
C21
C34 C35
R54
R94
R103
1nF
10K
10K
10K
1
P33/SSI
100uF-16V
2
P34/SDA/SCS
1-MODE
3
E2
C37
MODE
C6
R91
10K
4
P43/XCIN
R92
5
1nF
10K
100nF
P44/XCOUT
1-6-RST
6
RESET
7
P47/XOUT
8
R82
XT1
VSS/AVSS
2
9
P46/XIN
10
VCC/AVCC
1M
1-11-SDA
11
P54/TCIOD
1-12-SCL
12
1K
P53/TCIOC
R38
1-13-BUZZ
13
1K
P52/TCIOB
R46
1-14-POW
14
R45
1K
P51/TCIOA/TCTRG
1-15-RSTEP_A
15
1K
1-17-RSTEP_B
P50/TCCLK
R44
1-16-VSP
16
1K
1-18-RSTEP_C
P27/TDIOD1
R41
R40
1K
1-19-RSTEP_D
1K
1-20-LSTEP_A
R504
R89
1-21-LSTEP_B
1K
R87
1-22-LSTEP_C
1K
R88
1-23-LSTEP_D
1K
R86
1-24-USTEP_A
1K
R85
1-25-USTEP_B
1K
R84
1K
1-27-USTEP_C
1-28-USTEP_D
R505
1K
R23
10K
+5V
+15V
R26
1-26-PG-BACK
1K
R49
C15
2.7K
R116
4.7uF-50V-105
1nF
+15V
E14
390
+5V
R52
10K
R55
R51
10K
10K
C45
E15
R115
100nF
10K
5267-04A(
47uF-50V-105
+310V
L1
NTC1
SCK084R72
D6
D7
1N5399
E7
C2
1N5399
CX2
104-630VDC
100nF-275VAC
D8
D9
1N5399
1N5399
N1
2SC2412K
R1 4.7K
2-35-ST
R4 10K
R61
1.5 -1/2W
N17
2SC2412K
R6 4.7K
2-36-WF
R9
10K
N9
2SC2412K
R502 4.7K
2-34-FLZ
R503
10K
N8
2SC2412K
R500 4.7K
2-33-HEAT
R501
10K
R100
10K
R34
C32 100nF
1K
R35
C33 100nF
1K
R101
J4
10K
48
R114
KI1/AN9/P11
47
1-47-ROOM
KI2/AN10/P12
46
1-46-PIPE
KI3/AN11/P13
45
1-45-IR
(INT2)/P32
44
R113
(INT1)/P36
43
1-43
TAO/P30
42
1-42
IC3
TBO/P31
41
1-41-TXD
TXD2/P63
40
1-40-RXD
R5F212A7SNFA -
RXD2/P64
39
1-39-SWITCH
(CLK1)/CLK2/P65
38
R110
RXD1/INT3/P67
37
1-37-DISPSEL1
TXD1/INT2/P66
36
2-36-WF
INT0/P45
35
2-35-ST
TEO/P60
34
2-34-FLZ
TFO00/P80
33
2-33-HEAT
TFO01/P81
1-37-DISPSEL1
1-53-DISPSEL2
C16
100nF
+5V
+5V
1-16-VSP
R73
C28
1-39-SWITCH
10K
10nF
C5
R74
R72
100nF
CN35
1K
R71
+5V
100
1
GND
100
2
TX
3
RX
-
)
4
CY5
2.2nF-250VAC
T1
4
3
5
6
C23
R78
1
R77
47K-2W
7
103-630VDC
BCK-6-FE1901H/ 19ES-X58
D20
D19
US1M( 1A-1000V-75ns
CY2
2.2nF-250VAC
2.2nF-250VAC
IC9
A6059H
C004
E8
IC10
C010
TLP421
1nF
R120 1K
R121 10K
2-29-DA
R122 1K
2-30-DB
2-31-DC
2-32-DD
38
+5V
R24
1K
R25
1K
4.7uF-50V
R27 R28
C10
C9
E3
10nF
10nF
E4
10K
4.7uF-50V
1-42
R13
1K
1-43
1K
10K
R16
1-49-SER
1K
R18
1-50-RCK
1K
R20
1-51-SRCK
R21
330
IR
10K
R22
1K
C50
C49
C48
C47
C19
1nF
1nF
1nF
1nF
1nF
10K
R2
+5V
JP1
R5
1K
1-52-CHK/S_T
2
1
C1
100nF
TJC8-02-
/
R66
1-58
R69
1K
+5V
10K
+5V
C26
R63
10nF
R507
R506
N6
10K
R65
10K
R509
SS8050LT1
10K
1K
R508
1K
N7
SS8050LT1
C17
J33
J11
4.7K
1-57
R68
100nF
R67 10K
2
CN48
R14 10K
1
B2B-XH-A-R(
-
)
R19
U-home
1K
SW1
TSVC-1
D206
100 -1206
100 -1206
ZD003
FR106(1A-800V-500ns)
R202
R203
1N4742A(12V-1W)
R206
270 -2W
E9
R004
N001
2.2K
KTC8050
102-1000V
R205
C009
R019
560
47 -1/2W
12V-900mA
+12V
D008
1
R209
ER302(3A-200V-35ns)
C8
C13
CY1
E204
100 -1206
100nF
100nF
ZD202
1N4742A(12V-1W)
R80
1.5K
CY6
+15V
4.7nF-250V
+12V
N5
N4
SS8050LT1
N3
SS8050LT1
SS8050LT1
R123 10K
R124 1K
R125 10K
R126 1K
R127 10K
Circuit diagrams
CN6
4
3
2
1
B4B-XH-A(
-
)
+5V
1nF
C36
C30
CN7
100nF
1
COM3
COM2
2
E1
+5V
3
GND
4
100uF-16V
5
SER
RCK
6
7
SRCK
8
IR
R56
C46
+5V
10K
-
)
B8B-PH-K-S(
1nF
+12V
R62 10K
10K
D11
CN36
R64
RLS4148
3
27
2
1
B3B-XH-A(
-
)
D12
RLS4148
0011800323A
V1.0
1 ,
2
+15V
15V-100mA
ZD001
C7
100nF
HS1
H-25*15
IC6 L7805CV 1.5A-5V
+5V
3
INPUT
OUTPUT
E207
C18
100nF
2-DSTEP_A
2-DSTEP_B
2-DSTEP_C
2-DSTEP_D
N2
SS8050LT1
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