background image

AEX3M18JR

1 – 7

(POWER

S

UPPLY

P

WB)

(IPM

PWB)

(IPM

PWB)

(DISPLAY

PWB)

(RELAY

PWB)

(CONTROL

PWB)

C11,

C13:

FC1

ORANGE

WHITE

RED

NR2

NR3

R49

100

1/4W

100

1/4W

R47

100

1/4W

R48

R113

C10

420V

C9

420V

1500uF

TP

TN

P

N

R105

R106

10

11

8

9

6

7

12

13

14

3

0.1uF

50V

3

30pF

C38,

C39,

C40:

10k

R239

10k

1.0kF

5.6k

IC9

R204

R205

R202

R203

R200

R201

C93

0.1uF

PC1

PC81716

C34

C33

C32

C31

C30

C29

C28

C27

C26

C24

C23

C22

C21

C7

+

+

GREEN/YELLOW

GREEN

T1

250V

20A

T4

C3

275V 1uF

L6

1/4W

L

ThermalF

use

(TERMINALBOARD

1)

SACT32420

BLUE

C45

0.1uF

BLUE

BROWN

2

3

4

1

8

1

YELLOW

YELLOW

BLUE

FC5

BLUE

Z

DB1

CT1

C8

C20

FC4

C12

C11

C17

C18

SA1

NR1

CN13

L2

L1

L1

25

24

23

26

22

W

V

U

QM101(IPM)

17

16

1.8kF

R104

R103

e

FUSE101

630V

0.33uF

C121

TU

TV

TW

C

1/2W

180kF

R58,

R60,

R62:

1/2W

196kF

R57,

R59,

R61:

R56

R55,

56:

R55

1/2W

196kF

IC5

-

-

+

-

+

+

KIA339P

1/4W

100

R50

R58

R57

R60

R59

C37

C38

C40

C39

R52

7.5kF

R51

14.7kF

R53

R54

R62

R61

R52,

R53,

R54:

10V

C19

250V

ORANGE

BLUE

BLACK

GRAY

MRY1

PTC1

250V

3.15A

FUSE4

T5

+

-

T6

FUSE1

250V

4700pF

C12,

C14:

BROWN

AC1

AC2

+

lo

P

-

+

ACT(PFC)

AF1

4

3

2
1

6

8

IC4

STR-L472

-

+

9

8

7

6

5

4

3

2

11

2

3

4

5

6

7

8

9

10

Z

ZZ

YY

XX

WW

VV

UU

10

9

8

7

6

5

4

3

2

11

2

3

4

5

6

7

8

9

e

N

U

Z

Y

X

W

V

250V

10000pF

T2

2

1

33

1

2

L4

L3

C13

C14

1uF

275V

C1

C15

C16

275V

1uF

C2

R2

1/4W

R1

1/4W

510k

510k

2.2uF

275V

C8,

20:

L5

FB3

(TERMINALB

OARDA)

BLUE

BROWN

N

1

2

2

1

N

BROWN

(TERMINALB

OARDC)

(TERMINALB

OARDB)

BLUE

GREEN/YELLOW

N

1

2

GREEN/YELLOW

GREEN/YELLOW

R262

10k

R42

1k

1k

1k

R41

R43

R44

1.8k

R46

R45

1.8k

1.8k

C53

10k

CN16

R10

1.0kF

R11

D1

R12

6.49kF

7

10

9

BCN16

BCN1

CN11

YELLOW

FC6

FC2

FC3

BROWN

BLUE

238:390

3.9k

FC8

FC9

FC10

FC11

1k

25V

25V

0.1uF

100kF

20kF

2.0kF

200kF

200kF

25V

25V

RY1

100

R8A 1W

CN4

275V 0.033uF

C4A

4-WAY

Valve

1

3

1

3

CN1

Motor

DC

Fan

5

4

3

2

1

8

CN3

FUSE3

3.15A

250V

20A

220uF

A

BROWN

BLUE

B

CN2

CN101

CN114

CN14

WHITE

WHITE

FB2

FC7

ORANGE

BLUE

BLACK

RED

0.1uF

25V

C25

BT1

BT2

1/2W 150k

150k

1/2W

150k

1/2W

1/2W 150k

1000uF

44

16V

10u

C54

5V

R222

R223

R224

:10k

R222-224

5
6

1
2
3
4

R24010k

IPM

4.64kF

1/4W

9.53kF

1/4W

1/4W

IC8

0.01uF

50V

C66

0.01uF

C67 50V

SW

PUMP

DOWN

WINTER

C

OOL

C80

1/4W 130k

130k

1/4W

1/4W

R233-

R238

R237

R236

R235

R234

R233

R232

R230

R229

R228

R219

R217

R216

R215

R214

R213

R212

R211

R210

R209

560F

R13F

R13E

R13D

R13C

R13B

R13A

D4

D5

D3

D2

0.01uF 50V

CN5

6.8kF

TH5

(HEATSINK)

CN8B

3

10k

10k

D17

D8

D7

5V

D6

Q1

C

9

7

C

96

C59

C58

C57

C56

C55B

C55A

C55C

C55D

C55E

C55F

C55G

R28

a

b

c

T

P

1

h

g

1

2

1

2

3

4

5

6

7

7

6

5

4

3

2

1

h

g

10k

(Thermal

Fuse)

0.01u

50V

C85

(POWER

S

UPPLY)

R3

3

2

4

1

5V

R9

KRC102S

1000pF

50V

5V

5V

C49

(U)

(V)

(W)

(Z)

(W)

(Y)

(V)

(X)

(U)

(O)

(Y)

(W)

(B)

VSS 
VCC 
P00 
P01 
P02 
P03 
P04 
P05 
P06 
P07 
P10 
P11 
P12 
P13 
P14 
P15 
P16 
P17 
P20 
P21 
P22 
VCC 
P23

C

P87

P86

P85

P84

P83

P82

P81

P80

P77

P76

P75

P74

P73

P72

P71

P70

X1

X0

VSS

P41

P42

RST

P43

P44

P45

P46

P47

P50

P51

P60

P61

P62

P63

P64

P65

P66

P67

AVCC 
AVSS

AVR

MD0

MD1

MD2

P40

P37

P36

P35

P34

P33

P32

P31

P30

P27

P26

P25

P24

65

66

67

68

69

70

71

72

73

74

75

76

77

78

79

80

40

39

38

37

36

35

34

33

32

31

30

29

28

27

26

25

24

23

222

21

20

19

18

17

16

15

14

13

12

11

10

9

8

7

6

5

4

3

2

1

51

41

42

43

44

45

46

47

48

49

50

52

53

54

55

56

57

58

59

60

61

62

63

64

IC1

JPF

0.1uF

5V

JP4

JP5

50V

1000pF

1000pF

50V 
1000pF

50V

50V1000pF

2.2k

2.2k

2.2k

10k

5V

C68

0.01u

16V

UNIT

C

UNIT

B

UNIT

A

LED1

SW1

SW

WIRE

C

HECK

10k

10k

10k

10k

10k

JP2

SW2

LED2

LED3

C43 100u

10V

C44 0.1u

5V

R30

10

0

0p

F

50V

C119

R102

ZD101

130k

1/4W

1/4W 130k

1
2

3

4

R101

0.0

22

u

F

C120

50V

R100

S

R

4
2
1

6

18V

100uF

1

2

3

4

5

6

1

2

3

4

5

6

0.1uF

5V

7805

1

3

+

-

5

6

8

10

11

9

+

-

-

+

+

-

13

12

+

-

-

+

R17

10

2W

3300pF

0.01uF

15V

25V

2SA

1586G

250V

TR1

0.1uF

35V 150uF

35V

150uF

0.033uF

KIA7805API

0.1uF

10V

25V

680uF

680uF

18V

IC7

D15

D13

D14

R18

R22

R23

R26

R27

220pF

R29

D9

10uF

50V

25V

R25 1/4W

R24

1/4W

R21

1/4W

Q2

1/4W

1/4W

2kV

1.5k

1.5k

10k

68k

22k

1.65kF

10k

10k

FB1

680 R14

1/4W

3.3k

R20

D10

ZD1

D12

R19

2k

1/4W

D11

1/4W

R35

R36

-

+

12

3

2

5

4

18V

IC5

1M

D16

R40

R38

0.1uF

50V

0.01uF

R34

0.1uF

Q4

R31

R32,R33:1/2W270kF

34.8kF

10k

1k

KIA339F

1.8k

5V

R37

1
2

3

4

15V

5

1

VP

VUFS

VUFB

VPI

UPUP

VPI

VUFB

VUFS

VP

1

5

4

3

22

3

4

19

20

UN

VNVN

UN

20

19

9

WPWP

9

FO

1818

FO

+

--

+

1000pF

C

1

1

3

1000pF

C

114

C

1

15

1000pF

C

11

6

1000pF

C

1

1

7

1000pF

0.1uF

25V

C105 100uF

C122

0.1uF

C123

-

++

-

VPC

14

15

1111

15

14

VPC

VNC

VNIVNI

VNC

C112

0.1uF

C104C104

330uF330uF

25V

R109

D100

10

13

1212

13

10

VWFB

VPIVPI

VWFB

VWFSVWFS

8

7

66

7

8

VVFB

VPIVPI

VVFB

VVFS

R108-R111:

33

1/4W

R108

C101

100uF

25V

+

--

+

+

--

+

+

--

+

C106

D101

D102

D103

25V

100uF

C102

C107

C108

C109

0

.1

uF

0

.1

u

F

0.1uF

0.1uF

0.1

uF C110

C111

R110

R111

C103C103

100uF

25V

0.1uF

HZ24-2

ZD100

WNWN

2121

C

1

1

8

1000pF

R107

R112

6.8k

6.8k

S

C55A-55G:10u16V

Q8

Q6

c

b

a

4.64kF

13V

(UNITA

)

(UNITC

)

(UNITB

)

3.3

R15

R16 3.3

1/2W

1/2W

470pF

B

O

Y

W

1/4W

R257

1/4W

R255

2.2k

1/4W

R253

1k

1k

1k

R256

R254

R252

2.2k

2.2k

Q15

Q14

1/4W

1/4W

1/4W

IC3

KID65004AP

10k

R260

10k

R261

D29

GR

R

O

Y

W

D26

D27

D28

GR

R

BL

O

Y

W

BL

R

BL

O

W

Y

GR

3

4

5

6

1

2

3

4

5

6

2

1

6

5

4

3

2

1

D30

D31

D32

D33

D34

D35

D36

D37

C48

C50

O

Y

W

B

5V

KRC105S

Q3

R226

1k

0.01uF

50V

50V

0.01uF

C78

50V

0.01u

C79

0.1u

10k

R227

R231

5V

R225 10k

1

2

3

4

5

6

7

8

TH4

(heat

exchange)

(compressor)

(thermistor)

R98A-98G:6.8kF

R98G

R98F

R98E

R98D

R98C

R98B

R98A

R97E

R97D

R97C

R97B

R97A

R97F

R97G

C86C

C86B

C86D

C86E

C86G

C86H

C86F

R97H

C86A-C86H:0.01u50V

5V

6

5

4

3

2

1

TH8

(SUCTION

C)

TH7

(SUCTION

B)

TH6

(SUCTION

A)

0.1uF

C60

100uF

C61 10V

R97A-R97H:10k

C86A

1.8k

R88

C72

C73

0.1u

0.1u

C69

4700P

0.1u

C82

4700P

C70

4700P

250V

250V

PC817X3

PC817X3

PC817X3

3.3K

1000P C76

50V

1000P

C75

50V

C83

1000P

50V

C81

250V

PC9

PC8

PC7

PC6

PC4

PC5

PC853X

PC853X

PC853X

D19

D20

D21

R76

R77

4.7k

56k

R79

3.3k

2W 1k

1k

2W

1k

2W

R80A

R80B

R80C

1

4

2

4

3

1

R81

4.7k

56k

R82

R84

3.3k

2W 1k

2W 1k

1k

2W

R85A

R85B

R85C

3

2

1

4

2

3

4

1

R86

4.7k

R87 56k

R89

1k

2W

2W 1k

1k

2W

R90A

R90B

R90C

3

2

1

4

2

4

1

3

3

2

1.8k

1.8k

R78

R83

5V

7

3

1

CN6

N

A

B

C

5

Q

R

R221

270

0.1u

C47

50V 1u

f

OSC1

C98 0.1u

R220

270

C46

IC2

1

2

3

4

5

6

7

8

9

P

Q

T

S

R

flash

writer

monitor

(CN)

1

2

3

4

10k

R66

5V

1k

R68

1k

R67

R69

4.7k

5V

4.7k

R70

IC6

EEPROM

8

7

5

6

1

2

3

4

4

3

2

1

5V

+

-

3

2

11

2

3

C63

50V

C62 0.1u

10k

R95

10k

R93

5V

Q11

13V

MRY1

10k

R259

Q13

Q13-15:2SA1020Y

D38

R92

(suction)

(outdoor)

TH1

TH2

TH3

CN8A

CN8C

10k

R65

1/4W

5V

3.3k

3.3k

R94

R96

BCN13

CND

CNE

CNF

BCN11

0.01u

4.7k

1/4W

R73 10k

KRC245M

CN15

BCN15

6

5

4

3

21

5V

15V

6

5

4

3

21

KRC105S

KRC105S

Q7

KRC105S

BCN17

4
5
6

4
5
6

7
8

7
8

1
2
3

1
2
3

13V

5V

15V

CN17

KRA102S

(valve

A)

CN12A

(valve

B)

CN12B

(valve

C)

CN12C

18kF

25V

25V

25V

25V

25V

25V

25V

25V

25V

25V

25V

25V

25V

25V

25V

6.8k

Q9

KRC105S

Q10

R91

10k

47uF

10V

C64

KRA102S

15V

C65

RY1

CN9

3

2

4

5

1

5

4

1

2

3

13V

CN9A

FUSE6

250V 1A

FUSE5

2A

250V

1M 1/2W

R13A,

13B,

13C,

13D,

13E,

13F:

KID65004AP

IC12

R100:5W

0

.020

R32

R33

C41

C52

C51 50V

0.01uF

15V

680pF

R6

C6

R7

R4

R5

Summary of Contents for AE-X3M18JR

Page 1: ...LANATION OF CIRCUIT AND OP ERATION 1 BLOCK DIAGARM 2 1 2 FUNCTIONS 2 2 3 ACTIVE FILTER CIRCUIT 2 4 4 EXPLANATION OF IPM DRIVE CIRCUIT 2 6 CHAPTER 3 FUNCTION AND OPERATION OF PRO TECTIVE PROCEDURES 1 PROTECTIVE FUNCTIONS AND OPERA TIONS 3 1 2 TROUBLESHOOTING GUIDE 3 2 CHAPTER 4 REFRIGERATION CYCLE 1 REFRIGERATION SYCLE 4 1 2 REFRIGERANT PIPE INSTALLATION WORKS 4 2 CHAPTER 5 DISASSEMBLING PROCEDURE ...

Page 2: ...Grooved tube type Condenser Corrugate Fin and Grooved tube type Control Expansion valve Name of refrigerant R410A Refrigerant volume 1800g Noise level at cooling dB A High Med Low 7FR 37 34 28 46 9FR 39 36 28 12FR 40 37 29 Fan system Drive Direct drive Air flow quantity at cooling m3 min High Med Low 7FR 8 0 7 4 5 0 33 9FR 8 6 7 9 5 6 12FR 9 0 8 6 6 1 Fan Cross flow fan Propeller fan Connections R...

Page 3: ...AEX3M18JR 1 2 2 EXTERNAL DIMENSION 117 320 24 24 52 284 645 621 210 151 940 323 890 290 50 5 570 170 52 52 74 179 320 645 527 890 950 60 ...

Page 4: ...F 2 6 OFF OFF 2 6 1 4 3 3 3 1 1 5 4 3 680 320 950 07 OFF OFF 2 0 OFF OFF 2 0 1 4 2 7 2 4 1 5 3 2 520 320 710 Operating Status Combination of Indoor Units Heating Capacity kW Running Current A Power Consumption W A B C A B C RATING Min Max RATING Min Max RATING Min Max 3 Room 09 09 09 2 3 2 3 2 3 6 8 2 2 8 4 7 6 1 9 11 4 1660 420 2480 12 09 07 2 9 2 2 1 7 6 8 2 2 8 4 7 6 1 9 11 4 1660 420 2480 12 0...

Page 5: ...DIAGRAMS IPM P W B from ELECTROLYTIC CAPACITOR C10 from ELECTROLYTIC CAPACITOR C10 from COMPRESSOR TERMINAL W ORANGE from COMPRESSOR TERMINAL V WHITE from COMPRESSOR TERMINAL U RED from CONTROL PWB CN14 from CONTROL PWB BCN1 ...

Page 6: ...IPM P W B CN114 from POWER SUPPLY P W B from TERMINAL BOARD POWER SUPPLY N from TERMINAL BOARD POWER SUPPLY L from DC FAN MOTOR from CONTROL BOX from CONTROL P W B BCN15 from ACTIVE FILTER MODULE from TERMINAL BOARD UNIT C 1 from TERMINAL BOARD UNIT C N from CONTROL P W B BCN17 from CONTROL P W B BCN16 RELAY P W B POWER SUPPLY P W B ...

Page 7: ...from RELAY P W B CN9 from POWER SUPPLY P W B CN16 from POWER SUPPLY P W B CN15 from POWER SUPPLY P W B CN17 from EXPANSION VALVE C from EXPANSION VALVE B from EXPANSION VALVE A from TERMINAL BOARD POWER SUPPLY from TERMINAL BOARD UNIT A N UNITA C 2 COMP TENP HEAT EXCHANGER TEMP OUT DOOR TEMP SUCTION TEMP DISPLAY P W B CONTROL P W B ...

Page 8: ...HECK 10k 10k 10k 10k 10k JP2 SW2 LED2 LED3 C43 100u 10V C44 0 1u 5V R30 1000pF 50V C119 R102 ZD101 130k 1 4W 1 4W 130k 1 2 3 4 R101 0 022uF C120 50V R100 S R 4 2 1 6 18V 100uF 1 2 3 4 5 6 1 2 3 4 5 6 0 1uF 5V 7805 1 3 5 6 8 10 11 9 13 12 R17 10 2W 3300pF 0 01uF 15V 25V 2SA 1586G 250V TR1 0 1uF 35V 150uF 35V 150uF 0 033uF KIA7805API 0 1uF 10V 25V 680uF 680uF 18V IC7 D15 D13 D14 R18 R22 R23 R26 R27 ...

Page 9: ...dule drive circuit Outdoor fan motor drive circuit Power supply circuit Expansion valve A Expansion valve B Expansion valve C CPU oscillator circuit AC overcurrent detection DC overcurrent detection circuit LED Heat exchanger pipe thermistor Compressor thermistor Current transformer Compressor Power transistor module Outdoor fan motor Smoothing circuit Active filter circuit Filter circuit AC power...

Page 10: ...ped until the indoor operation is stopped DC over cur rent is detected by the power module AC over current is detected by CT1 on the outdoor PWB 3 COMPRESSOR PROTECTION CONTROL If the temperature of the compressor exceeds 113 C the compressor is stopped In this case the outdoor fan is not stopped until the tem perature of compressor drops below 99 C In 90 seconds after the compressor is stopped if...

Page 11: ...OPERATION 1 Overview Defrosting begins during heating if the conditions for compressor operation time and outdoor heat exchanger temperature are met When defrosting begins the indoor and outdoor fans stop Defrost ing stops when the temperature of the outdoor heat exchanger goes above approximately 15 C or defrosting time exceeds 10 min utes 2 Defrosting If the compressor operation time is more tha...

Page 12: ...ilter By adding ON signal to the gate of IGBT from the control IC IGBT turns ON and the collector current Ic flows This current flows from the side of the diode bridge DB to the Choke coil the side of the diode bridge DB through IGBT from the Choke coil L At this time energy is stored in the choke coil L Next when gate signal of IGBT turned OFF IGBT will be turned OFF and the energy stored in L du...

Page 13: ...bnormal voltage detects the abnormal voltage by inputting the output voltage of Active Filter to the 4th pin of comparator IC IC5 at the divided voltage by the resistors R31 R32 and R33 and comparing with reference voltage When the output voltage of Active Filter reaches 450V or higher the 4th pin of IC5 will be higher than the reference voltage at the 5th pin the output of comparator will be reve...

Page 14: ...of the compressor 2 DC over current detection circuit When a current about 24A or higher flows through the shunt resistor R100 on IPM printed circuit board PWB the voltage on this resistor is input to IPM CIN pin 16 Then the gate voltage of the lower phase IGBT LU LV LW inside the IPM turns OFF to cut the over current off At the same time an L output which lasts about 1 8 ms is generated from IPM ...

Page 15: ...tage of motor and current in the coil of motor as shown in the figure below This control is the forced magnetization system indepen dent of the location of rotor detecting the phase differ ence between driving voltage phase and line current phase flowing in motor coil and controls the modulation rate data to get the phase difference at the best effi ciency 5 DC Current Detection Sensor Circuit Con...

Page 16: ...orts When the room is activated turns ON and the com pressor starts Operation OFF 1 time Yes Yes 7 Thermistor open Compressor is stopped if compressor or heat exchanger or outdoor thermistor opens Close the expansion valve of the corre sponding room if some suction thermistor shorts opens When the room turns ON and the compressor starts Operation OFF 1 time Yes Yes 8 AC abnormal cur rent Compresso...

Page 17: ...an is in operation Operation OFF or ON Yes 1 Yes Yes 16 DC compressor rotation error Operation stops if rotation of compressor is abnormal During compres sor operation Automatically restarts after safety time 180 sec 8 times Yes Yes 17 IPM overheat pre vention control IPM high tempera ture error The compressor stops if the temperature of Heat sink exceeds 90 C During compres sor operation Automati...

Page 18: ... in above inspections 1 through 4 1 Replace the outdoor unit IPM PCB assembly 2 Correct the installation tighten the screws Apply silicon grease 3 Replace the outdoor unit fan motor 4 Replace the outdoor unit IPM PCB assembly 5 Replace the compressor Indoor outdoor units in complete shutdown 7 time Outdoor unit AC Current AC overcurrent error 1 Ensure unobstructed air flow from the outdoor unit ai...

Page 19: ...e the outdoor unit control PCB assembly Clock error 1 Check the clock for proper inputt 1 Replace the outdoor unit control PCB assembly Indoor unit in operation Outdoor unit in complete shutdown Indoor unit in operation Outdoor unit in complete shutdown Indoor outdoor units in operation Indoor outdoor units in operation Wires between units Serial open circuit 1 Check the wires between units 2 Chec...

Page 20: ...ic potential as the 0 V probe The entire electronic control section of the outdoor unit has a voltage potential difference from the ground When the oscilloscope is setup the 0 V line and the ground voltage ground will be short circuited resulting in an excessive current flow to cause damage to the oscilloscope or indoor electric circuits CAUTION when attaching or removing the board When operating ...

Page 21: ... k Thermistor Heatsink Color Black To measure the resistance first remove the connector as shown at right Signal CN8B Heatsink thermistor TH5 black 25ºC resistance 50k Tester 1 3 Figure 3 Temperature properties of heatsink thermistor Yes Yes Yes No No No Are the timer lamps of the in door units in all rooms flashing Is the compressor of the outdoor unit operating Are the timer lamps of the indoor ...

Page 22: ...Is CN6 connected The cycle is abnormal The compressor is abnormal P U N U P V N V P W N W A Is the resistance value of the ther mistor for the com pressor TH1 heat ex changer TH2 or outdoor temper ature TH3 or suc tion TH4 TH6 8 correct Is each of the resist ance values among the terminals of the IPM PWB 0 P U N U P V N V P W N W Is each of the resistance values among the termi nals of the IPM PWB...

Page 23: ...door control PWB or the expansion valve UNIT A or the expansion valve UNIT B or the expansion valve UNIT C Is the resistance value of the winding in the fan motor Abnormal fan motor of indoor unit Replace the indoor fan motor Is the wiring between the units connected by mistake or broken Repair the wiring between the units Replace the indoor control PWB Is the resistance value of the ther mistor f...

Page 24: ...as side 1 04MPa abs 1 21MPa abs 2 53MPa abs 1 97MPa abs Frequency 100Hz 70Hz 120Hz 50Hz AY XPM12FR 1 unit 1 80 67 89 59 2 38 37 1 3 3 10 13 42 25 4 11 17 2 6 Stop valve pressure Frequency 0 88MPa abs 1 10MPa abs 3 52MPa abs 2 38MPa abs Frequency 70Hz 40Hz 90Hz 40Hz Heat exchanger Heat exchanger Heat exchanger UNIT C UNIT B UNIT A STOP valve Liquid Compressor 4 way valve Accumulator STOP valve Gas ...

Page 25: ...old valve and operate the vacuum pump for 10 15 minutes Make sure the compound gauge reads 0 1MPa 76cmHg 5 Close the gauge manifold valve 6 Turn off the vacuum pump 7 Fully open the stop valve liquid side with hexagon socket screw key Turn all the way up to contact AY XPM9FR 1 unit 1 74 63 82 53 2 37 38 2 4 3 10 14 38 26 4 13 19 4 7 Stop valve pressure Frequency 0 96MPa abs 1 17 MPa abs 3 20MPa ab...

Page 26: ...ot be performed when the outdoor temperature is below 5 C 1 Complete the unit to unit wiring piping and perform the air remov ing of the pipes Turn the electrical circuit breaker ON Before turn ing the circuit breaker ON make sure no one is working on the indoor units installation Electrical shock or injury may occur 2 Check that all LED LED1 2 3 on the display board unit are flash ing synchronous...

Page 27: ...remove it 3 Remove the 6 screws fixing the side cover R then remove it 4 Remove the 4 screws fixing the fan guard then remove it and remove the 7 screws fixing the cabinet then remove it 3 screws are at the left 2 screws are at the right 1 screw is at the front 1 screw is at the rear 5 Remove the 3 screws fixing the control box angle then remove it CAUTION DISCHARGE ELECTROLYTIC CAPACITOR BEFORE T...

Page 28: ...pressor when reinstalling 9 Remove the 13 screws fixing the rear cabinet then remove it 1 screw is at the left 5 screws are at the right 7 screws are at the rear 10 Unfasten the nut fixing the propeller fan then remove it Remove the 5 screws fixing the control box then remove it 1 screw is at the right 4 screws are at the front NOTE How to disassemble of control box assembly is shown in step 15 25...

Page 29: ...valves How to disassemble the control box assembly 16 Cut the 3 wire fixing bands Disconnect the 7 connectors CN6 CN15 CN9A CN16 CN17 CN5 CN101 IPM Lift up the Control Board Unit PWB and remove it 17 Disconnect the 2 terminals Blue and Brown And Remove the 3 screws fixing the terminal board angle assembly then turn it inside out TH8 BROWN Just on the tilted pipe Just on the horizontal pipe Just on...

Page 30: ... fixing the heat sink cover then remove it 22 Cut a wire fixing board 23 Remove the each of 4 screws fixing the heat sink NOTE Confirm two kinds of spacer put in 4 holes have clung Seal the 4 burring holes with silicone sealer before reinstalling 24 Disconnect the 5 terminals TP TU TV TW TN and 1 connector CN114 on the IPM PWB And Remove the 2 screws fixing the IPM PWB and remove it NOTE When the ...

Page 31: ...mistor before mounting Thermistor Suction Suction A Suction B Suction C are mounted on GAS side pipes Thermistor Heat exchanger is mounted on LIQUID side pipe Expansion valve Check the labels before connecting to the Control Board Unit CAUTION Mismounting and misconnecting will cause error or failure Active filter or Power transistor module IPM NG OK Thermistor Suction B White Thermistor Heat exch...

Page 32: ...AEX3M18JR 5 6 MEMO ...

Page 33: ...The contents are subject to change without notice AEX3M18JR AE 3XM18JR HOW TO ORDER REPLACEMENT PARTS To have your order filled promptly and correctly please furnish the following information 1 MODEL NUMBER 2 REF NO 3 PART NO 4 DESCRIPTION PartsGuide 1 OUTDOOR UNIT 2 CONTROL BOARD UNIT PARTS 3 IPM30A BOARD PARTS 4 PACKING PARTS INDEX CONTENTS ...

Page 34: ... 1 45 1 44 1 43 3 15 1 10 1 47 1 48 6 6 2 13 2 14 1 12 1 42 6 4 1 31 1 73 1 34 1 32 1 50 1 26 3 11 2 67 1 14 6 1 3 1 3 19 1 54 1 21 1 22 2 66 1 24 1 23 6 13 1 1 3 7 3 20 3 21 3 18 6 8 3 17 3 14 1 15 3 8 3 16 2 80 1 16 1 13 1 16 1 27 1 4 1 55 6 4 6 13 1 53 1 52 6 3 6 3 6 5 1 59 1 28 3 6 3 5 1 19 1 68 1 20 1 57 1 58 3 4 3 2 3 3 3 9 3 9 3 10 3 12 3 13 3 10 1 60 1 66 1 46 6 5 1 77 6 4 6 13 6 14 6 7 1 ...

Page 35: ...C Seal C 1 40 PSEL C277JBEZ AG Cover insulator 1 41 PSEL C282JBEZ AD Cushion 1 42 PSEL C343JBEZ AE Bulkhead insulator A 1 43 PSEL C353JBEZ AP Insulator 1 44 PSEL C354JBEZ AE Insulator 1 45 PSEL C369JBEZ AC Accum cushion 1 46 PSEL C370JBEZ AC Insulator 1 47 PSEL C371JBEZ AC Seal 1 48 PSEL C372JBEZ AC Seal 1 49 PSEL C373JBEZ AC Seal 1 50 PSKR A244JBWZ AR Bulkhead 1 51 PSPA A146JBE0 AC Spacer 1 52 PS...

Page 36: ... AV Flare union unit 2S 3 5 DVLV A668JBKZ AZ 3way valve unit 3 6 DVLV A669JBKZ AW 3way valve unit 3 7 GLEG A029JBE0 AE Comp cushion rubber 3 8 LBSHCA005JBE0 AA Terminal bushing 3 9 LX NZA250JBEZ AE Flare nut 3 10 LX NZA251JBEZ AG Flare nut 3 11 PACU A049JBEZ BH Accumulator 3 12 PCAP A083JBEZ AC Nut bonnet 3 13 PCAP A084JBEZ AC Nut bonnet 3 14 PCMPRA524JBEZ CM Compressor 3 15 PCON A490JBPZ CC Conde...

Page 37: ...ntegrated circuit IC7 IC8 VHIMM1431A 1 AD Integrated circuit IC8 IC9 VHINJM2904M 1R AD Integrated circuit IC9 L3 L4 RFIL A116JBZZ AY Coil L3 4 L5 RFILNA013JBZZ BE Normal coil L5 L6 RFILNA007CBZZ AR Common coil L6 MRY1 RRLYDA012JBZZ AR Relay MRY1 NR1 NR3 RH VXA002JBZZ AF Varistor NR1 NR3 PC1 VHGPC81716P 1L AD Photo coupler PC1 PC4 6 8 VHGPC817XP3 1L AD Photo coupler PC4 6 8 PC5 7 9 VHGPC853HXP 1R A...

Page 38: ... A115JBEZ 1 1 21 AM PGUM A119JBEZ 1 1 22 AG PGUM A120JBEZ 1 1 23 AG PGUM A121JBEZ 1 1 24 AE PGUM A141JBEZ 1 1 72 AG PGUMSA068JBE0 1 1 26 AD PGUMSA319JBEZ 1 1 27 AF PMUF A081JBEZ 1 3 17 AY PRDAFA163JBEZ 1 1 25 AP PRDAFA215JBEZ 1 2 13 BE PRDAFA216JBEZ 1 2 14 BC PSEL B954JBEZ 1 1 30 AF PSEL B956JBEZ 1 1 31 AF PSEL B966JBEZ 1 1 32 AC PSEL C011JBEZ 1 1 34 AC PSEL C017JBEZ 1 1 35 AC PSEL C019JBEZ 1 1 36...

Page 39: ...76 AC TLAB C773JBRZ 1 1 62 AN TLABCC413JBRZ 1 1 64 AG TLAB D244JBRZ 1 2 85 AM TLAB D245JBRZ 1 2 84 AF TLAB D315JBEZ 1 1 77 AG TSPC F913JBRZ 1 1 65 AG V VHD1SR139 6 1 2 D2 4 AB 2 D19 21 AB VHD1SR35 4A 1 2 D26 37 AC VHD1SS133 1 2 D1 D38 AA VHDD25VB60 1 1 2 65 AN VHDRK36LF011B 2 D14 AD VHGPC81716P 1L 2 PC1 AD VHGPC817XP3 1L 2 PC4 6 8 AD VHGPC853HXP 1R 2 PC5 7 9 AG VHIKIA339F 1L 2 IC5 AD VHIMM1431A 1 ...

Page 40: ...N ALL RIGHTS RESERVED No part of this publication may be reproduced stored in retrieval systems or transmitted in anyform or by any means electronic mechanical photocopying re cording or other wise without prior written permission of the publisher ...

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