Specifications

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SEMICONDUCTOR PIN FUNCTION
SEMICONDUCTOR
S 1731 Indoor, S 1735 Indoor
IC1
Pin No. Signal Name Function In/Out Active Voltage
1
A/D Input
Sensor(Room Temp.) In - See 53 Page
2 A/D Input
Sensor(Heat Exchanger Temp.) In - See 55 Page
3
NC
NC In - 0V
4
Munual Sw. Input Munual Sw. Input
In L 5Vor0V
5
Motor(fan)
H=Motor(fan) On Out H See Fig 1
6
Buzzer
4KHz Pulse=On Out H 5V 4KHz Pulse(Duty50%)
7
Pulse Input (Fan Motor Pulse) Pulse Input (Fan Motor Pulse)
In - See Fig 3
8
NC
NC In - -
9
NC
NC In - -
10
NC
NC Out - -
11
NC
NC In - -
12
NC
NC In - 0V
13
NC
NC In - 0V
14
NC
NC In - 5V
15
NC
NC In - 0V
16
MIN.Hz UP
H=MIN.Hz UP L= Normal In H 0V
17
Remote Controller Input Remote Controller Signal
In H 5Vor0V
18
NC
NC In - 0V
19
Reset L= Reset
In L 5Vor0V
20
NC
NC In - 5V
21
Zero Cross Zero Cross
In - See Fig. 2
22
Resonator In Clock In
In - 10MHz
23
Resonator Out Clock Out
Out - 10MHz
24
VSS
0V(GND) - - 0V
25
NC
NC In - 5V
26
NC
NC In - 5V
27
Ionizer Lamp L=Ionizer Lamp On
Out L 5Vor0V
28
Power Lamp L=Power Lamp On
Out L 5Vor0V
29
Timer Mode Lamp L=Timer Mode Lamp On
Out L 5Vor0V
30
Operating Mode Lamp L= Operating Mode Lamp On
Out L 5Vor0V
31
NC
NC In - 5V
32
Power Relay L=Power Relay On
Out H 5Vor0V
33
Motor(Louver D) Pulse=On L= Off
Out H 5Vor0V
34
Motor(Louver C) Pulse=On L= Off
Out H 5Vor0V
35
Motor(Louver B) Pulse=On L= Off
Out H 5Vor0V
36
Motor(Louver A) Pulse=On L= Off
Out H 5Vor0V
37
NC NC
Out - -
38
NC NC
Out - -
39
NC NC
Out - -
40
NC NC
Out - -
41
NC NC
Out - -
42
NC NC
Out - -
43
NC NC
Out - -
44
Ionizer H=Ionizer On
Out H 5Vor0V
45
A/D Inpuut
Change the Function In - 3.4V
46
EXTERNAL CONTROL
H=On L= Off(Normal) In - 0.2V
47
AUTO RECOVERY OFF
H=Off L= On(Normal) In H 0 V
48
NC
NC In - 5V
49
NC
NC In - 0V
50
EEPROM(SO)
EEPROM Serial Data Output Out - 5Vor0V
51
Communication Output Pulse= Communication Output
Out H 5Vor0V
52
Communication Input Communication Input
In - 5Vor0V
53
NC
NC In - -
54
EEPROM(SI)
EEPROM Serial Data Input In - 5Vor0V
55
EEPROM(SK)
EEPROM Serial Data Clock Out - 5Vor0V
56
EEPROM(CS)
EEPROM Chip Select Out - 5Vor0V
57
VCC
5V POWER - - 5V
58
Vref
A/D Reference Voltage - - 5V
59
AVSS
0V(GND) - - 0V
60
NC
NC - - 0V
61
REMOTE CONTROLLER A/B
H=Btype L= Atype(Normal) In - 0.2V
62
LOUVER CONTROL
H=Off L= On(Normal)
In - 0.2V
63
NC
NC - - 5V
64
NC
NC - - 5V
IC3
1∼ 7
15
Input 5V(or Pulse)=On¸0V=Off In L 5Vor0V
8 GND 0V(GND) - 0V
9∼
Output 0V(or Pulse)=On¸12V= Off Out H 12Vor0V
16 VCC 12V -
-
- 12V