Sharp AH-S327W2 User manual

AH-S327W2

AU-S327W2

SHARP CORPORATION

SPLITTYPE

ROOM AIR CONDITIONERS

SERVICE MANUAL

Page

SPECIFICATIONS ................................................................................................................................................. 2

EXTERNAL DIMENSIONS..................................................................................................................................... 3

WIRING DIAGRAMS............................................................................................................................................. 4

ELECTRICAL PARTS ............................................................................................................................................ 6

BLOCK DIAGRAM ..................................................................................................................................................7

MICROCOMPUTER CONTROL SYSTEM............................................................................................................ 9

FUNCTIONS ........................................................................................................................................................ 13

FUNCTION AND OPERATION OF PROTECTIVE PROCEDURES ................................................................... 17

BREAKDOWN DIAGNOSIS PROCEDURE ........................................................................................................ 19

REFRIGERATION CYCLE................................................................................................................................. 21

PERFORMANCE CURVES ................................................................................................................................ 22

DISASSEMBLING PROCEDURE ....................................................................................................................... 23

REPLACEMENT PARTS LIST............................................................................................................................. 33

TABLE OF CONTENTS

MODELS

S5712AHS327W2

INDOOR UNIT

AH-S327W2

AU-S327W2

OUTDOOR UNIT

Intheinterestsofuser-safety(Requiredbysafetyregulationsinsome

countries) thesetshouldberestoredtoitsoriginalconditionandonly

parts identical to those specified should be used.

AH-S327W2

AU-S327W2 SPECIFICATIONS

Models INDOOR UNIT OUTDOOR UNIT

AH-S327W2 AU-S327W2

Cooling capacitor kcal/hr. 3000(1200 ~ 3300) at 33 ~ 110Hz, 2200 at 60Hz

Moisture removal Liters/h 1.3

Electrical data

Phase - Single

Rared frequency Hz 60

Rated voltage range V 198 to 242

Rated voltage V 220

Rated current A 8.6(2.9 ~ 9.9) at 33 ~ 110Hz, 5.1 at 60Hz

Rated input W 1720(500 ~ 1980) at 33 ~ 110Hz, 970 at 60Hz

Power factor % 91

Compressor Type Hermetically sealed rotary type

Model KHV127FEM

Oil charge 270cc(SUNISO 4GSD)

Refrigerant Evaporator Grooved tube type

system Condenser Corrugate Fin and Grooved tube type

Control

Capillary tube

Refrigerant volume 690g

Noise level High dB(A) 41 49

(at cooling) Med. dB(A) 37 -

Low dB(A) 33 -

Fan system

Drive Direct drive

Air flow High m3/min. 9.8 28.3

quantity Med. m3/min. 8.5 -

(at cooling) Low m3/min. 7.0 -

Fan Close flow fan Propeller fan

Connections

Refrigerant coupling Flare type

Refrigerant tube size Gas, Liquid 1/2", 1/4"

Refrigerant pipe sets No. AZ-24H5E; 5m (16.4 ft), AZ-24H7E; 7m (23ft)

Drain pipng mm (Inches) O.D ø 18 (45/64)

Others

Safety device Compressor: Thermal protector

Fan motors: Thermal fuse

Fuse, Micro computer control

Air filter Polypropylene net (Washable)

Net Width mm 790 (31-3/32) 728 (28-21/32)

dimensions Height mm 270 (10-5/8) 530 (20-7/8)

Depth mm 188 (7-13/32) 250 (9-27/32)

Net weight kg 8 31

Note: The condition of star(

) marked item are CNS.

AH-S327W2

AU-S327W2

EXTERNAL DIMENSIONS

Figure E-1. INDOOR UNIT

Figure E-2. OUTDOOR UNIT

250

280

304

525

10.5

76.5

141.5

515

530

728

98 60

59.5

69.5

790 188

270

1800

58 18

19.5

182

Length unit (mm)

AH-S327W2

AU-S327W2 WIRING DIAGRAMS

Figure W-1. Wiring Diagram for AH-S327W2

AH-S327W2

AU-S327W2

Figure W-2. Wiring Diagram for AU-S327W2

AH-S327W2

AU-S327W2

ELECTRICAL PARTS

For Model AH-S327W2 and AU-S327W2

DESCRIPTION MODEL REMARKS SITE

Indoor fan motor ML-A486 220 - 240V, 50/60Hz AH

Indoor fan motor capacitor – 430V, 1.5µF AH

Transformer – Primary; AC 230V, 50Hz AH

Secondary; AC14.6V, 50Hz

Fuse – 250V, 2.5A AH

Compressor KHV127FEM 3-PHASE Induction motor AU

Outdoor fan motor ML-A584 220 - 240V, 50/60Hz AU

Outdoor fan motor capacitor – 430V, 2.0µF AU

WPE1 – QFS-GA014JBE0(20A, 250V) AU

WPE2 – QFS-GA019JBE0(20A, 250V) AU

WPE3 – QFS-GA008JBE0(3A, 250V) AU

AH-S327W2

AU-S327W2

BLOCK DIAGRAMS

INDOOR UNIT for AH-S327W2

DC power supply circuit

Fan motor phase control circuit

Rotation pulse input circuit

AC clock circuit

Louver motor drive circuit

Remote controller signal

reception circuit

Buzzer drive circuit

CPU reset circuit

CPU oscillator circuit

Room temp. detect circuit

Heat exchanger pipe thermo circuit

Compensation circuit/

select circuit

Compensation circuit

Switchover circuit

Serial I/O circuit

Compressor relay drive circuit

LED drive circuit

Auto restart circuit 

Test run circuit

Power on circuit

Flow direction control

(louver motor)

Wireless remote control

operation

Audible operation confirmation

Room fan motor

Fan motor pulse detect

Room temp. thermistor

Heat exchanger pipe thermistor

Blower temperature,

fan speed, model select

Outdoor ratings

Wireless, preheat

Indoor/outdoor control signal I/O

Outdoor unit power supply

on/off control

LED display

Test run (forced operation)

Self diagnostics,

fault diagnosis

AC power

Unit-unit

wiring (AC

power and

serial

signals)

CPU

FUSE

Auxiliary mode Auxiliary mode button ON/OFF

2.5 A

AH-S327W2

AU-S327W2

OUTDOOR UNIT for AU-S327W2

CPU

Test mode circuit

LED drive circuit

Heat exchanger pipe 

thermo circuit

Compressor thermo circuit

CPU reset circuit

Serial I/O circuit

Power transistor module 

drive circuit

Outdoor fan relay drive

circuit

Power supply

circuit (built

into IPM)

CPU oscillator circuit

AC overcurrent detection

circuit

DC overcurrent detection

circuit

LED

Heat exchanger pipe

thermistor

Compressor thermistor

Current transformer

Compressor

Power 

transistor module

Outdoor fan

Smoothing

circuit

Filter

circuit Unit-unit

wiring (AC

power and

serial

signals)

20 A

protection

20 A protection

3 A

protection

AH-S327W2

AU-S327W2

MICROCOMPUTER CONTROL SYSTEM

Figure L-1. Electronic Control Circuit Diagram for AH-S327W2

1

2

3

4

C101

C102

0.1µ25v

C80

25v

0.1µC8

16v

0.01µ

C10

25v0.1µ

C17

10v

100µ

JP8

JP4

JP3

JP2

JP1

5v SW1

MODEL 8

MODEL 4

MODEL 3

MODEL 2

MODEL 1

RATING 1

RATING 2

CHAMB.T.

FAN L

FAN M

FAN H

POWER ON

AUX.

(TEST RUN)

CN1

CN2

CN3CN301

CN201

CN101

RED

GRAY

WHITE

1 1

3 3

CN8 CN701

CN9

CN7

JP

(RED)LED101

(YELLOW)LED102

–

R9

10k

R12

10k

R29

680

R31

R33

R46

R35

R37

R39

R30

R32

R45

R34

R36

R38

PHOTO DETECTOR UNIT

R10 680

R11 330

33 P27

34 P26

35 P25

36 P24

37 P23

38 P22

39 P21

40 P20

41 K1

42 P17

43 P16

44 P15

45 P14

46 P13

47 P12

48 P11

49 P10

50 P07

51 P06

52 P05

53 P04

54 P03

55 P02

56 P01

57 P00

58 GND

59 VDD

60 VR

61 P57

62 P56

63 P55

64 P54

P41

P42

P43

P44

P45

P46

F

RESET

CK1

CK2

AGND

P30

P31

P32

P33

P50

P51

P52

P53

19

18

17

16

15

14

13

12

11

10

9

8

7

6

5

4

3

2

1

TEST

OSC

out

OSC

P60

P61

P62

GND

P63

P64

P65

P66

KH

P40

32

31

30

29

28

27

26

25

24

23

22

21

20

NC

NC NC

NC

IC2

12v

5

4

3

2

RED

ORANGE

YELLOW

PEACH

BLUE

LOUVER MOTOR

RY1

R16

1.8k

SSR1

–

8

7

6

1

2

3

C9

50v

1000P

R1

470

1/2W

IC80 R80

6.8k

R81

R4

33k

R3

2W

270

R5

33k

C6

10v

100µZD1

ZD2

5C-1

C5

25v

47µ

–

C18

35v

100µ

–

41 43 OUT IN

7812

IC3

GND C4

25v

0.1µ

C2

AC

250v

0.1µ

C14

25v

0.1µ

C3

25v

1000µ

R7

20k

R6

3.3k

C7

50v

1000P

14 15

JP5

JP6

JP7

JP9

JP10

SIGNAL IN SIGNAL OUT

MODEL 5

MODEL 6

MODEL 7

WIRELESS

PREHEAT

1

OSC

8MHz

3Q2

C16

16v

0.01µ

C15

16v

0.01µ

16 D5

R22

1.2k

R21

3.3k

R18 2.7k

R20

33k

R19

4.7k

IC1

TRANSFORMER

D1 D2

D3 D4

TR C21

250VAC

0.01µ

C1

430VAC

1.5µ

NR1

56 54

NF1

FU1

2.5A 250v T

CNR1

13 11

S201D01

SSR1

YELLOW

RED

BLACK

BLUE

BROWN

GRAY

FAN

MOTOR

R26

2W

11k R23

100k R24

22k

R25

4.7k

R44

2W

680 X 5

R43

R42

R41

R40

R27

2W

11k C19

50v

0.047µ

C20

50v

0.01µ

24-2

C12

16v

10µ

–

R15

10.0kF

C11

16v

10µ

R14

10.0kF

R13

10k TEST

CN4

5v TH2

TH1

PIPE TEMP.

15k (25°C)

ROOM TEMP.

10k (25°C)

OUT

BLUE

RED

BLACK

POWER

SUPPLY

1

2

3

OUTDOOR

UNIT

THERMAL 

FUSE 

103˚C

TERMINAL

BOARD 4P

SERIAL SIGNAL

PC2

2PC1

S M 8 3 1 3

FUNC-

TION

IC1 PIN

No. 16(P44) 17(P43) 36(P24) 35(P25) 34(P26) 33(P27) 20(P40) 19(P41) 18(P42) 29(P60) 8(P30) 7(P31) 5(P33) 4(P50) 3(P51) 2(P52)

JP10SYMBOL JP9 JP1 JP2 JP3 JP4 JP5 JP6 JP7 JP8 R30, R31 R32, R33 R45, R46 R34, R35 R36, R37 R38, R39

NONESET USE R30: 15K

R31: 13K R32: JP

R33:

NONE

R45: JP

R46:

NONE

R34: JP

R35:

NONE

R36: JP

R37:

NONE

R38: JP

R39:

NONE

PREHEAT

NONE/ON

WIRE-

LESS

NORMAL/

CHANGE

MODEL1

fmin UP

ON/

NORMAL

MODEL2

PANEL/

GRILL

MODEL3

AH/AY

MODEL4

HOT K.

NORMAL/

MODEL5

RPM: 1/3

MODEL6

OUT T.

TH.

NONE/ON

MODEL7

ABILITY

MODEL8

ABILITY

RATED f

COOL RATED f

HEAT CHAMBER

TEMP.

CONTROL

FAN L

SPEED

1~5

FAN M

SPEED

6~10

FAN H

SPEED

11~12

NONE NONE USE NONE NONENONE USE USE

NOTE:

1. : TEST POINT

2. Not specified R is 1/5W.

RPM

RY1

10v

33µ

23 24

1 2

AH-S327W2

AU-S327W2

Figure L-2. Electronic Control Circuit Diagram for AU-S327W2

33

34

35

36

37

38

39

40

41

42

43

44

45

46

47

48

49

50

51

52

53

54

55

56

57

58

59

60

61

62

63

64

32

31

30

29

28

27

26

25

24

23

22

21

20

19

18

17

16

15

14

13

12

11

10

09

08

07

06

05

04

03

02

CN3

RY1

CNR1

R15 R14 R13 R12

250v~

0.1µ

250v~

0.1µ

250v~

4700p

250v~

4700p

250v

0.1µ

3.3k

250v~

4700p 250v~

1µ

L3 CT1

C11

SA1

NR1

C24

C12

NR2

430v 2.0µ

(Fan Motor 

Capactor)

510k

510k R2

20A

250v

3A

250v

WPE3

2W

680

(Control Circuit Board Ass'y)

2W

680 2W

680

R11

56k R5

4.7k

R43

10k

IC1 MB89855

(RH-IXA390JBE0)

C14

50v

1000p

C13

2W

680

5v 5v

R16 10k

R17 10k

PC817X7

PC1

PC2

PC853H

LED1

R6

2.7k

C16

5v 5v

2.2k

NC

0.1µ

25v

R38

(10k) 5v

IC3

31PST993D

OSC1

1µ

50v

C23

R10

6.49kF

C15

10v

220µ

D2 1.00kF

R9 +

JP1

1.80kF

BCN12

DTD113ZS

Q3 JP4

KRC106M Q1

RY1

13v

DB1

BCN13

BL PTC1 GR

MRY1

(PTC Thermistor)

CMP

1/2W

270k

1/2W

270k R40

C29

0.33µ630v

R39

T10

T8 WPE2

20A

250v

FC1

PM1

(IPM)

U RE

(Compressor)

50v

1000p

TH2

(Thermistor for Condenser)

TH1

(Thermistor for Compressor)

5v BCN11

R33U 330

R32X 330

R31V 330

R30Y 330

R29W 330

R28

R34

Z 330

13v13v

ARM

CN8

JP2

R35

C18

C21 C22

R20 R21

6.80kF 6.80kF

16v

10µ

16v

10µ

R37

R36

330k

R27 13k

R26

R25 R23

R24 33k

R22

10 9 8 7 6 5 4 3 2 1

FREQ

NOTE:

BK

BL

BR

GN

GR

G/Y

OR

RE 

WH 

(Black)

(Blue)

(Brown)

(Green)

(Gray)

(Green/Yellow)

(Orange)

(Red)

(White)

(Yellow)

(Reactor)

400v

1300µ

400v

1300µ

DB2

RE YL

200v

90µ

2CN9

123

(Terminal Board)

(Thermo. fuse)

G/Y

(Control Box)

(Fan Motor)

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