Mitsubishi Electric MXZ-24UV -E2 Manuale utente

SERVICE MANUAL

CONTENTS

1. TECHNICAL CHANGES ····································2

2. PART NAMES AND FUNCTIONS······················3

3. INDOOR/OUTDOOR

CORRESPONDENCE TABLE ···························4

4. INDOOR UNITS COMBINATION·······················5

5. SPECIFICATION·················································7

6. NOISE CRITERIA CURVES······························ 8

7. OUTLINES AND DIMENSIONS ························ 9

8. WIRING DIAGRAM ··········································10

9. REFRIGERANT SYSTEM DIAGRAM··············11

10. PERFORMANCE CURVES······························12

11. MICROPROCESSOR CONTROL·····················18

12. TROUBLESHOOTING······································24

13. DISASSEMBLY INSTRUCTIONS·····················36

14. PARTS LIST······················································39

15. OPTIONAL PARTS···········································42

Inverter-controlled multi system

Models

MXZ-24UV -

MXZ-24UV - E2

No. OB287

REVISED EDITION-B

This manual describes technical data of the outdoor unit.

For the indoor unit, refer to the service manuals No. OB229, OB227, OB252, OB212, OB239 and OC165.

Model indication

SPLIT-TYPE, HEAT PUMPAIR CONDITIONERS Please void OB287 REVISED EDITION-A.

Revision B:

●“Check of HPS” has been corrected.

OB287B--1.qxp 06.6.7 11:12 AM Page 1

TECHNICAL CHANGES

MXZ-24UV - ➔MXZ-24UV -

1. Combinations of the connectable indoor units have been increased.

2. Noise filter P.C. board has been changed to improve the capacity for protecting the inverter-controlled circuit when the

voltage higher than the rated one is applied with the inverter-controlled circuit.

3. Noise filter P.C. board for “E1” and “E2” are not interchangeable.

4. Service parts have been changed as follows according to above change;

•The value of R (resistor) has been changed. 10Ω➔20Ω

•TB6 (terminal block) has been removed.

E2E1

Revision A:

• MXZ-24UV- has been added.

Revision B:

• “Check of HPS” has been corrected.

OB287B--1.qxp 06.6.7 11:12 AM Page 2

PART NAMES AND FUNCTIONS

OUTDOOR UNIT Air inlet

Air outlet

(back and side)

Model indication

MXZ-24UV-

MXZ-24UV- E2

OB287B--1.qxp 06.6.7 11:12 AM Page 3

3INDOOR / OUTDOOR CORRESPONDENCE TABLE

❈There is no combination other than this table.

MXZ-24UV- E1 , MXZ-24UV- E2

OUTDOOR UNIT

Combination of the connectable indoor units

07+07

07+09

07+12

07+18

09+09

09+12

09+18

12+12

12+18

18+18

07+07+07

07+07+09

07+07+12

07+07+18

07+09+09

07+09+12

07+09+18

09+09+09

09+09+12

NOTE: SLH-1AR is equivalent to class 09 (9000BTU).

MCFH-13NV, SEH-1.6AR, SLH-1.6AR is equivalent to class 12 (12000BTU).

MCFH-18NV, SEH-2AR,SLH-2AR is equivalent to class 18 (18000BTU).

OB287B--1.qxp 06.6.7 11:12 AM Page 4

07+07

07+09

07+12

07+18

09+09

09+12

09+18

12+12

12+18

18+18

07+07+07

07+07+09

07+07+12

07+07+18

07+09+09

07+09+12

07+09+18

09+09+09

09+09+12

3.62

4.35

6.96

11.11

7.44

7.83

11.01

14.40

9.18

13.19

14.40

8.94

10.05

2.2

(0.9-2.7)

2.8

(0.9-3.2)

4.0

(0.9-4.5)

5.0

(0.9-5.4)

4.4

(1.8-5.4)

5.0

(1.8-5.8)

6.2

(1.8-6.7)

7.1

(1.8-7.6)

5.6

(1.8-6.2)

6.8

(1.8-7.4)

7.1

(1.8-7.6)

7.1

(1.8-7.6)

7.1

(1.8-7.6)

7.1

(1.8-7.6)

6.6

(2.4-8.1)

7.1

(2.4-8.5)

7.1

(2.4-8.5)

7.1

(2.4-8.5)

7.1

(2.4-8.5)

7.1

(2.4-8.5)

7.1

(2.4-8.5)

7.1

(2.4-8.5)

7.1

(2.4-8.5)

750

(260-930)

900

(260-1040)

1440

(260-1700)

2300

(260-2980)

1540

(580-1960)

1620

(580-2050)

2280

(580-2540)

2980

(580-3450)

1900

(580-2180)

2730

(580-3230)

2980

(580-3450)

2980

(580-3450)

2980

(580-3450)

2980

(580-3450)

1850

(700-3650)

2080

(700-4070)

2080

(700-4070)

2080

(700-4070)

2080

(700-4070)

2080

(700-4070)

2080

(700-4070)

2080

(700-4070)

2080

(700-4070)

—

2.2

2.8

3.4

3.8

2.55

3.15

3.55

2.37

3.0

—

2.2

2.8

4.0

4.95

2.8

4.0

4.55

3.55

3.95

3.55

2.2

2.15

1.85

1.65

2.55

2.2

2.0

2.37

2.05

2.2

2.8

4.0

5.0

2.2

2.15

2.8

2.55

3.55

3.15

3.55

2.2

2.15

1.85

1.65

2.0

1.75

1.55

2.37

2.05

Indoor units

combination Unit A Unit B Unit C

Cooling capacity (kW) Total Outdoor unit

power consumption

(W) Current

(A) Power

factor

(%)

NOTE: Electrical data is for outdoor unit only.

MXZ-24UV - E1 , MXZ-24UV - E2

INDOOR UNITS COMBINATION

NOTE: SLH-1AR is equivalent to class 09 (9000BTU).

MCFH-13NV, SEH-1.6AR, SLH-1.6AR is equivalent to class 12 (12000BTU).

MCFH-18NV, SEH-2AR,SLH-2AR is equivalent to class 18 (18000BTU).

OB287B--1.qxp 06.6.7 11:12 AM Page 5

NOTE: Electrical data is for outdoor unit only.

07+07

07+09

07+12

07+18

09+09

09+12

09+18

12+12

12+18

18+18

07+07+07

07+07+09

07+07+12

07+07+18

07+09+09

07+09+12

07+09+18

09+09+09

09+09+12

5.46

6.38

9.23

11.11

9.32

9.90

12.32

13.19

11.35

12.75

13.19

11.69

12.08

3.2

(0.9-4.1)

4.0

(0.9-4.8)

6.0

(0.9-7.2)

7.1

(0.9-7.8)

6.4

(1.8-7.2)

7.2

(1.8-8.7)

8.6

(1.8-10.6)

9.0

(1.8-10.9)

8.0

(1.8-10.1)

8.8

(1.8-10.8)

9.0

(1.8-10.9)

9.0

(1.8-10.9)

9.0

(1.8-10.9)

9.0

(1.8-10.9)

8.6

(2.1-10.6)

9.0

(2.1-10.9)

9.0

(2.1-10.9)

9.0

(2.1-10.9)

9.0

(2.1-10.9)

9.0

(2.1-10.9)

9.0

(2.1-10.9)

9.0

(2.1-10.9)

9.0

(2.1-10.9)

1130

(270-1600)

1320

(270-1700)

1900

(270-2570)

2300

(270-2830)

1930

(470-2300)

2050

(470-2680)

2550

(470-3800)

2730

(470-3880)

2350

(470-3560)

2640

(470-3850)

2730

(470-3880)

2730

(470-3880)

2730

(470-3880)

2730

(470-3880)

2420

(520-3000)

2500

(520-3180)

2500

(520-3180)

2500

(520-3180)

2500

(520-3180)

2500

(520-3180)

2500

(520-3180)

2500

(520-3180)

2500

(520-3180)

—

2.87

3.5

4.4

4.7

3.2

4.1

4.5

3.0

3.9

—

3.2

4.0

5.4

6.2

4.0

5.3

5.75

4.5

4.9

4.5

2.87

2.75

2.3

2.15

3.2

2.7

2.5

3.0

2.55

3.2

4.0

6.0

7.1

3.2

2.8

4.0

3.5

3.25

4.5

4.1

4.5

2.87

2.75

2.3

2.15

2.6

2.2

2.0

3.0

2.55

Indoor units

combination Unit A Unit B Unit C

Heating capacity (kW) Total Outdoor unit

power consumption

(W) Current

(A) Power

factor

(%)

NOTE: SLH-1AR is equivalent to class 09 (9000BTU).

MCFH-13NV, SEH-1.6AR, SLH-1.6AR is equivalent to class 12 (12000BTU).

MCFH-18NV, SEH-2AR,SLH-2AR is equivalent to class 18 (18000BTU).

OB287B--1.qxp 06.6.7 11:12 AM Page 6

5SPECIFICATION

Outdoor model

Indoor units number

Indoor units total capacity (Connectable)

Indoor units total capacity (Simultaneous operation)

Piping total length

Connecting pipe length

Height difference (Indoor ~ Outdoor)

Height difference (Indoor ~ Indoor)

Function

Capacity

Dehumidification

Outdoor air flow

Power outlet

Running current

Power input

Auxiliary heater

Crankcase heater

Power factor

Starting current

Compressor motor current

Fan motor current

Model

Output

Winding

resistance (at20:)

Model

Winding

resistance (at20:)

Dimensions WOHOD

Weight

Sound level (High)

Fan speed (High)

Fan speed regulator

Refrigerant filling

capacity (R22)

Refrigerating oil (Model)

Thermistor RT61

Thermistor RT62

Thermistor RT63

Thermistor RT65

Thermistor RT66,67

Thermistor RT68

R/h

K/h

A(kW)

"



"

rpm

k"



Compressor Electrical

data

Fan

motor

Special

remarks

Capacity System

Coefficient of performance (C.O.P)

Outdoor unit power supply

MXZ-24UV - E1 , MXZ-24UV - E2

Single phase

230V,50Hz

2 to 3

✽2 Total model name 34 (3 indoor units) / 36 (2 indoor units)

Max. 50

Max. 25

2520

—

90.0

12.08

0.6

THV247FBA (ROTARY)

2000

U-V 0.61

V-W 0.61 W-U 0.61

RA6V60-BA

WHT-BLK 78.7 BLK-YLW 26.9

YLW-BLU 11.7 BLU-RED 83.6

900o900o320 (+35)

550

3.9

870 (MS-56)

13.4 (at 100:)

10.0 (at 25:)

17.0 (at 50:)

10.0 (at 25:)

Cooling

7.1 (0.9~8.5)

—

10.05

2080 (260~4070)

8.7

2.68

Heating

9.0 (0.9~10.9)

—

12.08

2500 (270~3180)

9.1

3.35

TEST CONDITIONS COOLING INDOOR DB27.0°C WB19.0°C

OUTDOOR DB35.0°C WB24.0°C

HEATING INDOOR DB20.0°C

OUTDOOR DB 7.0°C WB 6.0°C

NOTE: Test conditions are based on ISO5151 (Refrigerant piping length (one way): 5m).

✽1 Electrical data is for only outdoor unit.

✽2 However, please refer to “INDOOR/OUTDOOR CORRESPONDENCE TABLE” of page 4 for the combination.

OB287B--1.qxp 06.6.7 11:12 AM Page 7

NOISE CRITERIA CURVES6

10 63 125 250 500 1000 2000 4000 8000

APPROXIMATE

TERESHOLD OF

HEARING FOR

CONTINUOUS

NOISE

NC-60

NC-50

NC-40

NC-30

NC-20

NC-70

OCTAVE BAND SOUND PRESSURE LEVEL, 0dB = 0.0002 MICRO BAR

BAND CENTER FREQUENCIES, Hz

Test conditions.

Cooling :DB35: WB24:

Heating :DB 7:WB 6:

COOL

NOTCH

HEAT

SPL(dB(A))

LINE

MXZ-24UV - E1

MXZ-24UV - E2

OB287B--1.qxp 06.6.7 11:12 AM Page 8

OUTLINES AND DIMENSIONS

MXZ-24UV -

MXZ-24UV -E2

Unit: mm

OUTDOOR UNIT

10 35320 900

460

900

250

381.8

531.3

317 23

Handle for

moving Air in

Indoor and

outdoor

connect wiring

23✕45 hole

Air in

C unit connection

B unit connection

A unit connection

6.35 (flared) 1/4

Liquid pipe

12.7 (flared) 1/2 (A , B unit)

9.52 (flared) 3/8 (C unit)

[

1.Installation space

2.Service space

More than

100

More than

200

More than

100

More than

500

More than

500

More than

100 More than

100

More than

350

Base bolt length

Less than

More than

350

More than

350

Service space

Air in

2-U-shape notched holes

(Base bolt M10)

Air in

Air out

200 200

387

355

27 40

(16) (16)

500

Veranda Base

Rubber cushion

More than

500

Note : Leave front and both sides

clearance fully. Note : Obstacles on front and rear side only

The unit can be used by attaching an optional

outdoor outlet guide (MAC-855SG)

(but both sides and the top are open).

Note : Leave front and overhead

clearance fully.

Note : Leave front, overhead and

both clearance fully.

2-12 ✕ 36 Oval hole

OB287B--1.qxp 06.6.7 11:12 AM Page 9

WIRING DIAGRAM

POWER SUPPLY

~/N 230V

50Hz

INDOOR

UNIT (A)

CIRCUIT BREAKER

TB1

TB2

TB3

TB4

BLU

RED

TB5

X64

GRN/YLW

GRN

CN720

CN601

X64

LD62

CN913

CN791

CN901

6 4

CN902

CN851 CN852

MF61

21S4

1 2

2 1

1 2

3 4

1 2 3 4 5 6

1 2 3 4 5 6 7

1 2 3 4 5 6

C65

LD63

LD64

LDB

LD61

LDE

L61

F911

SSR61

X63

X62

X61

INDOOR

UNIT (B) BLU

ORN

CN602

1 2

INDOOR

UNIT (C) BLU

YLW

CN603

1 2

BLK

BRN

GRY

BLK

BLK WHT

YLW

RED

BRN

BLU

ORN

YLW

WHT

ORN

WHT

BLK

BLU

YLW

RED

ORN ORN RED RED

YLW

BLK

ORN

BRN

GRY

X65

X66

X67

63H2

CN552

CN553

BLK

RELAY

P.C. BOARD

WHT

RED

WHT

U W

AKL

WHT

NOISE FILTER

P.C.BOARD

RED DS61 DS62

C61

C63 C62

–

BLKREDR

BLU

LEV A

CN792

1 2 3 4 5 6

RED

BRN

BLU

ORN

YLW

WHT

LEV B

CN793

1 2 3 4 5 6

RED

BRN

BLU

ORN

YLW

WHT

LEV C

CN722 CN663

63H1 RT63

CN662

1 2 3 4 5 6 7 81 2 1 23 4

RED

BLK

RT66 RT68

RT67

GRY

CN661

CN705

7 6 5 4 3 2 1

CN515

1 2 3 4

4 3 2 1

CN801

CN501

TAB62

TAB63

T801

CT62

TAB66

TAB65

TAB64

I.P.M P.C. BOARD

F801

(1A)

CN704

CN514

CN554CN551

1 2 3 4 5 6 7 8

RT62

RT61

RT65

GRY

BLK

GRY

ELECTRONIC CONTROL P.C. BOARD

(1A)

TO INDOOR UNIT

CONNECTING 12V

SYMBOL

C61

C62,63

C65

CT61,62

DS61

DS62

F801

F911

L61

SYMBOL

LEV A~C

MF61

RT61

RT62

RT63

RT65

RT66,67

RT68

NAME

POWER FACTOR CAPACITOR

SMOOTHING CAPACITOR

OUTDOOR FAN CAPACITOR

CURRENT TRANSFORMER

DIODE MODULE

DIODE STACK

FUSE (1A)

REACTOR

COMMON MODE CHOKE COIL

NAME

EXPANSION VALVE

COMPRESSOR

FAN MOTOR (INNER PROTECTOR)

RESISTOR

DISCHARGE TEMPERATURE THERMISTOR

DEFROST TEMPERATURE THERMISTOR

EVAPORATION TEMPERATURE THERMISTOR

FIN TEMPERATURE THERMISTOR

GUS PIPE TEMPERATURE THERMISTOR

SYMBOL

SSR61

T801

TB1,2,3,4,5

X61,62,63

X64,65

X66,67

21S4

63H1

63H2

NAME

SOLENOID COIL RELAY

TRANSFORMER

TERMINAL BLOCK

FAN MOTOR RELAY

RELAY

R.V. COIL

HIGH PRESSURE SWITCH

NOTE: 1.About the indoor side electric wiring refer to the indoor unit electric wiring diagram for servicing.

2.Use copper conductors only. (For field wiring)

3.Symbols below indicate. : Terminal block : Connector

POWER SUPPLY

~/N 230V

50Hz

INDOOR

UNIT (A)

CIRCUIT BREAKER

TB1

TB2

TB3

TB4

BLU

RED

X64

GRN/YLW

GRN

CN720

CN601

X64

LD62

CN913

CN791

CN901

6 4

CN902

CN851 CN852

MF61

21S4

1 2

2 1

1 2

3 4

1 2 3 4 5 6

1 2 3 4 5 6 7

1 2 3 4 5 6

C65

LD63

LD64

LDB

LD61

LDE

L61

F911

SSR61

X63

X62

X61

INDOOR

UNIT (B) BLU

ORN

CN602

1 2

INDOOR

UNIT (C) BLU

YLW

CN603

1 2

BLK

BRN

GRY

BLK

BLK WHT

YLW

RED

BRN

BLU

ORN

YLW

WHT

ORN

WHT

BLK

BLU

YLW

RED

ORN ORN RED RED

YLW

BLK

ORN

BRN

GRY

X65

X66

X67

63H2

CN552

CN553

BLK

RELAY

P.C. BOARD

WHT

RED

WHT

U W

AKL

WHT

NOISE FILTER

P.C.BOARD

RED DS61 DS62

C61

C63 C62

–

BLKREDR

BLU

LEV A

CN792

1 2 3 4 5 6

RED

BRN

BLU

ORN

YLW

WHT

LEV B

CN793

1 2 3 4 5 6

RED

BRN

BLU

ORN

YLW

WHT

LEV C

CN722 CN663

63H1 RT63

CN662

1 2 3 4 5 6 7 81 2 1 23 4

RED

BLK

RT66 RT68

RT67

GRY

CN661

CN705

7 6 5 4 3 2 1

CN515

1 2 3 4

4 3 2 1

CN801

CN501

TAB62

TAB63

T801

CT62

TAB66

TAB65

TAB64

I.P.M P.C. BOARD

F801

(1A)

CN704

CN514

CN554CN551

1 2 3 4 5 6 7 8

RT62

RT61

RT65

GRY

BLK

GRY

ELECTRONIC CONTROL P.C. BOARD

(1A)

TO INDOOR UNIT

CONNECTING 12V

SYMBOL

C61

C62,63

C65

CT61,62

DS61

DS62

F801

F911

L61

LEV A~C

SYMBOL

MF61

RT61

RT62

RT63

RT65

RT66,67

RT68

SSR61

T801

NAME

POWER FACTOR CAPACITOR

SMOOTHING CAPACITOR

OUTDOOR FAN CAPACITOR

CURRENT TRANSFORMER

DIODE MODULE

DIODE STACK

FUSE (1A)

REACTOR

COMMON MODE CHOKE COIL

EXPANSION VALVE

NAME

COMPRESSOR

FAN MOTOR (INNER PROTECTOR)

RESISTOR

DISCHARGE TEMPERATURE THERMISTOR

DEFROST TEMPERATURE THERMISTOR

EVAPORATION TEMPERATURE THERMISTOR

FIN TEMPERATURE THERMISTOR

GUS PIPE TEMPERATURE THERMISTOR

SOLENOID COIL RELAY

TRANSFORMER

SYMBOL

TB1,2,3,4

X61,62,63

X64,65

X66,67

21S4

63H1

63H2

F912

NR63

NAME

TERMINAL BLOCK

FAN MOTOR RELAY

RELAY

R.V. COIL

HIGH PRESSURE SWITCH

FUSE (3.15A)

VARISTOR

NOTE: 1.About the indoor side electric wiring refer to the indoor unit electric wiring diagram for servicing.

2.Use copper conductors only. (For field wiring)

3.Symbols below indicate. : Terminal block : Connector

F912

(3.15A)

NLD65

NR63

MODEL MXZ-24UV- E1

OUTDOOR UNIT

SG79A845H01

MODEL MXZ-24UV- E2

SG79Y088H01

OB287B--1.qxp 06.6.7 11:12 AM Page 10

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