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Service Manual 22
Schematic Diagram
Schematic Diagram
Electronic Control Device
WP
Vcc
Digit3 (Scan3)
Digit4 (Scan4)
Digit1 (Scan1)
Digit2 (Scan2)
Digit0 (Scan0)
MAIN POWER
COMP
HERM
FAN
C
CAPACITOR
MOTOR
FAN
120 1/2W
ZNR01J
TVR14271
250V/T3.15A
FUSE
G4A-1A-E-LG
RY-COMP
1000
D02D~D05D
1N4004
35V
D03D
D02D
POWER TRANS
1
2
7
4
D05D
+
D04D
C01D
R01J
CN-WOR
C01J
0.1/275V
CN-BK
CN-BL
CN-RD
RY-HI
RY-LOW
RY-MED
C06D
5V
0.01
0.1
50V
16V
1000
10V
0.01
50V
50V
C04D
12V
IC01D
C03D
C02D
7812
O
I
+
220
C05D
O
IC02D
7805
+
I
C01L
680pF
1K
ULN2004A
IC01G
R01L
5V
1K
R01E
20
R02E
20K
R12F
10K
R02F
0.001
C02F
R01F
10K
C01F
0.001
ROOM-TH
PIPE-TH
SYNC
S/V-
4WAY
MOTOR
3
14
RY-SYNC
RY-4WAY
CN-4WAY
11
33
11
CN-SYNC
33
12V
RY-HI
RY-MED
ULN2004A
IC01M
9
15
16
8
2
1
12V
4
4
3
2
OR1H
RY-SYNC
RY-LOW
RY-4WAY
RY-COMP
11
12
13
6
5
4
10
7
OR2H
5V
12.1K
R21H
R03H
0K
12.1K
1%
1%
R22H
HVB
KEY1
LED out2
LED out1
LED out0
34 35 36
LED out3
Receiver
30
Buzzer
33
32
31
HI
MED
ION
29
28
27
SLIDE SW
40
KEY0
37 38 39
VDD
SEG-g
41 42 43
SEG-f
SEG-e
44
SEG-d
TMP87CH47U
MICOM
4
SEG-b
SEG-a
SEG-c
3
2
1
7
6
5
Room TH
Option2
Option1
Pipe TH
23
26
25
24
SYNC
LOW
4WAY
COMP
202122
/Reset
Osc out
Osc in
16
VAref
VSS
1819 17 131415
TEST
11
SCL
SDA
10
9
8
Tx
12
Rx
5V
A1
3
4
GND SDA
SCL
A2
A0
1
2
EEPROM
24LC01BT
SMW250-04
1
1
2
2
CN-TH1
5V
R01B
R02H
R01H
1%
6.2K
1%
12.1K
RT8.00MG
1M
OSC01B
50V
C01A
0.01
+
C02A
1uF
50V
3
20K
R01A
6
10
AIR PURIFIER
150
R07G
710
8
9
12V
16
2
12
15
3
6
150
150
150
150
150
R03G
314
512
6 11
4 13
R05G
R06G
150
R04G
116
2 15
R01G
R02G
11
10
7
8
9
8
9
10
A/RESTART
12
6
7
11
14
13
4
5
A/SWING
g
E/SAVER
+
88 SEGMENT
GND
RECEIVER
BZ01E
-4002
PKM13EPY
Vout
Vcc
8
10V
5V
220
C22L
d d
DEFROST
f
c
FAN
DRY/HEAT
TIMER
7
1
e
f
e
2
3
d
COOL
4
5
b
Digit1
a
b
f
b
cc
e
g g
a a
Digit0
5V
5V
17
1
17
1
D03F
5V
ENERGY
SAVER
SW3
D07F
TEMP UP
SW7
1K
R04P
6
5
20K
20K
R02P
8
7
R03P
5V
A101S
D02F
TIMER
SW2
D01F
FAN
SW1
TEMP DOWN
D05F
SW5
MODE
D04F
SW4
D08F
AUTO SWING
SW8
SW6
ON/OFF
D06F
14
4
2
16
3
15
A101S
Q03G
A101S
Q02G
5
13
Q01G
A101S
1
IC01A
S7136
2
3.6V
5V
Q04G
CN-DISPCN-DISP