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9

C21

0.01µF 250V

NR2 471K

T1

T2

6

4

L

TR1AC

BCR5PM-12L-A8

N

C.T.

FUSE

2.5A

250V

B

BLUE

NR1 471K

C1

QXW2E104K

R1

390

 1W

1

3

5

C

A

FAN MOTOR

THERMAL PROTECTOR

FAN MOTOR

CAPACITOR

BLUE

GRAY

CN1

S21ME3F

           PT

0.1

250VAC

THERMAL FUSE

D1

D4

D3

D2

R2

22K

R3

22K

N

1

2

3

D

E

TRANSFORMER

BLUE

RY1

RY2

RY3

BLACK

BROWN

PURPLE

ORANGE

CNR1

CNR2

6

5

6

5

C3

0.22µF

50V

C2

2200µF

35V

C4

47µF

25V

IC 2

IC 3

IN

OUT

IN

OUT

GND

0.1µ 50V

C6

100µF

10V

12V

BCN2

CN2

C5

5V

C16

0.1µF

50V

NC

C20 0.01µF

1

2

3

4

8

7

6

5

X24C01P

R4

3.3K

R31

10K

1SR35-100A x 4

JP5

JP6

JP7

JP8

JP9

JP10

JP11

COOL  WIND

RECEIVER  UNIT

FAN  PULS

DEICE  A

DEICE  B

SWEAT

COMP  OFF

TIME 

1

P20

64

AV

REF

2

P21

63

AV

DD

3

P22

62

AN17

4

P23

61

AN16

5

P24

60

AN15

6

P25

59

AN14

7

P26

58

AN13

8

P27

57

AN12

9

P30

56

AN11

10

P31

55

AN10

11

P32

54

AV

SS

12

P33

53

P04

13

P34

52

XT2

14

P35

51

IC

15

BUZ

50

X1

16

P37

49

X2

17

V

SS

48

V

DD

18

P40

47

P03

19

P41

46

INTP2

20

P42

45

INTP1

21

P43

44

INTP0

22

P44

43

/RESET

23

P45

42

P67

24

P46

41

P66

25

P47

40

P65

26

P50

39

P64

27

P51

38

P63

28

P52

37

P62

29

P53

36

P61

30

P54

35

P60

31

P55

34

P57

32

V

SS

33

P56

µPD78012

3

2

1

3

2

1

SW1 02

SW1 01

TEST  RUN

AUX

5V

CN101

BCN1

5V

POWER  ON        JP1

MEMORY             JP2

DEBAG  A            JP3

DEBAG  B            JP4

C19

0.22µF

50V

2

4

3

5

1

RCM1

10K

10K

-1000pF x 2

RA1

10K

 x 4

12V

RY1

1

2

3

4

5

CN3

LOUVER

MOTOR

PT

S21ME3F

R5

2.7K

BZ

IC 6(OPTION)

IC 4

4

7

4

7

9

1

7

6

5

4

3

2

16

10

11

12

13

14

15

C15

0.22µF

50V

1

2

1

2

D5

D6

RY2

RY3

CN2

BCN2

C14

0.01µ

25V

3

2

1

Q3

Q1

Q2

2

3

1

2

3

1

5V

R7

10K

NC

NC

NC

NC

5V

100µ

10V

R10

R11

5V

RA2

10K

(F) x5

D8

C9

220µ

16V

R13

10K(F)

R14

820(F)

C.T.

5V

R15

2.7K(F)

R16

22.6K(F)

C10

10µF

16V

C11

10µF

16V

R17

15K(F)

R18

15K(F)

2

1

PIPE  TEMP

TH2  15K(25˚C)

ROOM  TEMP

TH1  15K(25˚C)

R19

10K

R20  10K

R21  10K

R22  10K

CA1

1000pF x 4

NC

NC

CST8.0MTW

R26

680

R24

4.7K

R23

33K

5V

D9

12V

C12

10µF

16V

FAN  MOTOR

RPM  SIGNAL

3

2

1

IC 1

IC 5

R25

1.2K

R27

4.7K

C17

0.1µF

50V

TEST

PST591D

CN5

CA2

1000pF x 4

R28

680

R29

330

R30

10K

1

2

3

4

5

1

2

3

4

5

LED 102 (YELLOW) TIMER  LED

LED 101 (RED) OPERATION  LED

C101

33µF

10v

BCN3

CN103

RECEIVER  UNIT

JP12

NC

NC

NC

NC

NC

BCN2

BCN2

CN2

CN2

R6

560

 1W

50Hz

220/240V

EVAPORATOR

EARTH  LINE

NEUTRAL  LINE

COMPRESSOR

VALVE  COIL

OUT  DOOR

FAN  MOTOR

DTC143ZS

DTC143ZS

DTC143ZS

6

5

4

3

3

3

5V

5V

LM7812CT

LM7805CT

BLUE

BLACK

5V

C7

C8

R9

R12

2.4KF

33KF

1.8K

FAN H

FAN M

FAN L

MODEL A

MODEL B

D7

TERMINAL

BOARD 1

RED

G

V

A

1K

RY1

CNR3

F

G

I

O

RY4

CN4

0.1µ

50V

5V

1

3

2

L

10

11

1-1

COOL operation
In the “COOL” mode, the thermostat circuit is
controlled by four thermostat lines (C1 thru C4).

1-3

HEAT operation
In the “HEAT” mode, the thermostat circuit
is controlled by six thermostat lines (H01 thru H4).

1-2

DRY operation
In the “DRY” mode, the thermostat circuit is
controlled by three thermostat lines (D1 thru D3).

2-1

COOL operation
The compressor turns on or off, at the thermostat
lines C3 and C4. The outdoor fan motor is also
controlled with the compressor.

18

32

C1

C2

C3

C4

17.5

18.5

19.5

20.5

31.5

32.5

33.5

34.5

Preset temperature (˚C)
("THERMO" switch)

Room temperature (

˚C)

Room temperature(

˚C)

Preset temperature (˚C)
(THERMO" switch)

18

32

D1

D2

D3

17.5

18.5

19.5

31.5

32.5

33.5

Preset temperature (˚C)
("THERMO" switch)

H4

H3

H2

H1

H02

H01

17

19

21

22

24

26

31

33

35

36

38

40

18

32

Room temperature(

˚C)

Room temperature(

˚C)

 Preset temperature (˚C)
   

Room temperature transition

C3

C4

States 1 & 3 : Compressor ON
State 2 : Compressor OFF

1

2

3

12

2-3

Heat operation
The compressor turns off, at State  2  , turns on
continuously at State  1  &  3 .

2-4

Fan only operation
The indoor fan motor always turns on.

Fan speeds are given by the indoor fan motor, “M”,
“L” and “UL”, which are available in the following
operation mode.

FAN Switch

HEAT

COOL      FAN ONLY

    HIGH

M

M

        M

    LOW

L

L

         L

    SOFT

UL

UL

       UL

Compressor

Fan Speed

Cooling zone

ON

“UL”

Dehumidifying

ON

“D”

zone

Circulating

OFF

“D” or OFF

zone

2-2

DRY operation
 On the switch on, the compressor always starts to
operate for 2 minutes with fan speed “D” (slower
than “UL”).
The microcomputer reads the room temperature 2
minutes after this first compressor operation.
This room temperature is set as the preset
temperature automatically.
The preset temperature ranges from 18˚C to 32˚C.
When the room temperature is below 18˚C, the
preset temperature is  set to 18˚C, and when the
room temperature is over 32˚C, the preset
temperature is set to 32˚C.
Dry operation is divided into three zones (Cooling
zone, Dehumidifying zone and Circulating zone)
by thermostat lines (D1 to D3), and the compressor
and the fan motor are controlled in each zone as
shown in Table Y-1.

Room temperature

Preset temperature

Room 
temperature 
transition

D3

D2

D1

States 1 & 5 : Cooling zone
States 2 & 4 : Dehumidifying zone
States 3 : Circulating zone

3

4

5

1

2

Room temperature

Preset temperature

Room temperature transition 

H2

H1

States 1 & 3 : Compressor ON
State 2 : Compressor OFF

3

1

2