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16
9. Electronic Circuit Diagram
9.1 Indoor
Unit
70
60
50
R
esi
st
an
ce
(k
Ω
)
Temperature (ºC)
Sensor (Thermistor)
Characteristics
40
30
20
10
-10
0
10
20
30
40
50
0
Pipe Temp. Sensor
Intake Air Temp. Sensor
1
1
2
2
5V
4 3 2 1
C49
NONE
C45
0.1μ
16V
B1
0.1μ
16V
B1
R37
10k
R54
270
5V
C48
NONE
C47
NONE
5V
R85
5.1k
5.1k
CN-DISP
YELLOW
2
3
4
5
3
4
5
5
4
3
2
1
4
3
2
1
R89
NONE
CN-RMT
1
5V
C3
0.1μ
16V
B1
ELECTRONIC CONTROLLER
(MAIN)
SW01
4
FAN MOTOR
CN-FM (WHT)
Y
7
4
1
1
B
W
BL
R
M
FUSE301
T3.15A L250V
RY-PWR
RY-PWR2
Y/G
Y/G
TEMP.
FUSE
102°C (4.5A)
EVAPORATOR
1
2
3
AC303
(WHT)
AC304
(RED)
G301
(GRN)
GROUNDING
TERMINAL
L
R
W
G
P
BL
BR
TERMINAL
BOARD
GROUNDING
TERMINAL
L
N
SINGLE PHASE
POWER SUPPLY
1ø 220-230V 50Hz
COMMUNICATION
CIRCUIT
TO
OUTDOOR
UNIT
NOISE
FILTER
CIRCUIT
RECTIFICATION
CIRCUIT
C25
1μ
16V
B3
R62
15k
1%
C27
1μ
16V
B3
R61
20k
1%
SUCTION
TEMP. SENSOR
(THERMISTOR)
(15k, 3950)
TEMP. SENSOR
(THERMISTOR)
(15k, 3950)
PIPING
TEMP. SENSOR
(THERMISTOR)
(20k, 3950)
TEMP. SENSOR
(THERMISTOR)
(20k, 3950)
4
3
2
1
t°
5V
CN-TH
RED
1
2
3
4
5
CN-CNT
WHITE
t°
REMOTE CONTROLLER
UP DOWN
LOUVER MOTOR
CN-STM1
WHITE
1
5
4
3
2
12V
1
2
3
4
16
IC03
15
14
13
5
12
6
11
7
10
BR
1
5
R
O
O
M
Y
P
P
ON
OFF
SET
TIMER
CANCEL
AIR SWING
TEMP
MODE
SLEEP
FAN SPEED
OFF/ON
OFF/ON
R47
68
1/2W
R46
68
1/2W
12V
9
8
COM
E
1/10W
1/10W
4
5
CN-DISP
PH5
WHITE
ELECTRONIC CONTROLLER
(DISPLAY & RECEIVER)
(DISPLAY & RECEIVER)
RECEIVER
C201
C202
R203
IC201
R204
R201
R202
5%
5%
LED202
(orange)
(green)
LED201
1
Vout
Vcc
GND
GND
GND
2
3
3
PCB
A713533
P.C.B
5V
IC03
IC03
IC03
IC03
IC03
IC03
IC03
5V
5V
12V
R90
10K
10K
R82
10K
10K
L6
B-06-RTF-50
L5
B-06-RTF-50
B-06-RTF-50
C57
0.1μ
16V
B1
0.1μ
16V
B1
C56
0.1μ
16V
B1
0.1μ
16V
B1
C51
1000p
B1
C52
1000p
B1
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