Mitsubishi Electric MXZ-24UV

SERVICE MANUAL

CONTENTS

1. PART NAMES AND FUNCTIONS······················2

2. INDOOR/OUTDOOR

CORRESPONDENCE TABLE ···························3

3. INDOOR UNITS COMBINATION·······················4

4. SPECIFICATION·················································6

5. NOISE CRITERIA CURVES······························ 7

6. OUTLINES AND DIMENSIONS ························ 8

7. WIRING DIAGRAM ············································9

8. REFRIGERANT SYSTEM DIAGRAM··············10

9. PERFORMANCE CURVES······························11

10. MICROPROCESSOR CONTROL ····················17

11. TROUBLESHOOTING······································23

12. DISASSEMBLY INSTRUCTIONS·····················34

13. PARTS LIST······················································37

14. OPTIONAL PARTS ······················BACK COVER

Inverter-controlled multi system

Model

MXZ-24UV - E1

No. OB287

This manual describes technical data of the outdoor unit.

For the indoor unit refer to the service manuals No. OB229, OB227 REVISED EDITION-B, OB252, OB212,

OB239 and OC165 of corresponding models.

Model indication

SPLIT-TYPE, HEAT PUMPAIR CONDITIONER

OB287--1.qxp 10/9/01 3:29 PM Page 1

OUTDOOR UNIT Air inlet

Air outlet

(back and side)

Model indication

MXZ-24UV- E1

PART NAMES AND FUNCTIONS

OB287--1.qxp 10/9/01 3:29 PM Page 2

2INDOOR / OUTDOOR CORRESPONDENCE TABLE

❈There is no combination other than this table.

MXZ-24UV- E1

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

SEH-2AR is equivalent to class 18 (18000BTU).

OB287--1.qxp 10/9/01 3:29 PM Page 3

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

INDOOR UNITS COMBINATION

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

SEH-2AR is equivalent to class 18 (18000BTU).

OB287--1.qxp 10/9/01 3:29 PM Page 4

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

SEH-2AR is equivalent to class 18 (18000BTU).

OB287--1.qxp 10/9/01 3:29 PM Page 5

4SPECIFICATION

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

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 3 for the combination.

OB287--1.qxp 10/9/01 3:29 PM Page 6

NOISE CRITERIA CURVES5

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

OB287--1.qxp 10/9/01 3:29 PM Page 7

OUTLINES AND DIMENSIONS

MXZ-24UV -E1

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 bollt 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 : Obsacle on front and rear sid only.

The unit can be used by attaching an optional

outdoor outlet guide (MAC-855SG)

(but both sides and the top are opend.)

Note : Leave front and overhead

clearance fully.

Note : Leave front, overhead and

both clearance fully.

2-12 ✕ 36 Oval hole

OB287--1.qxp 10/9/01 3:29 PM Page 8

WIRING DIAGRAM

POWER SUPPLY

~/N 230V

50Hz

INDOOR

UNIT (A)

CIRCUIT BRAKER

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.Symboles below indicate. : Terminal block : Connector

MODELS MXZ-24UV- E1

OUTDOOR UNIT

SG79A845H01

OB287--1.qxp 10/9/01 3:29 PM Page 9

REFRIGERANT SYSTEM DIAGRAM

Unit:mm

MXZ-24UV -E1

Ball valve with

service port

Muffler

Ball valve with

service port

Distributor

Strainer

LEV

Oil

separator

Compressor

High pressure

switch 1

Accumulator

Capillary tube

Reversing valve

Discharge

temperature

thermistor

Evaporation

temperature

thermistor

(RT67)

Defrost

thermistor

Strainer Distributor

Outdoor

heat

exchanger

High pressure

switch 2

Indoor unit

Unit C gas pipe temperature thermistor

[9.52

Indoor unit

Unit B gas pipe temperature

thermistor [12

Indoor unit

Strainer LEV [6

Indoor unit

Strainer LEV [6

Indoor unit

Unit A gas pipe

temperature thermistor

[12

[16 [16

[9.52

[16

Capillary tube

[2.5✕[0.6✕750

[2.5✕[0.6✕1000

Capillary tube

[4.0✕[2.4✕400

Capillary tube

[3.0✕[2.0✕200

Refrigerant flow in cooling

Refrigerant flow in heating

Reversing valve coil

heating ON

cooling OFF

●Refrigerant pipe diameter is different according to indoor unit to be connected. When using extension pipes,refer to the

tables below.

●When diameter of refrigerant pipe is different from that of outdoor unit union, use optional Different-diameter pipe.

For further information on Different-diameter pipe,see page BACK COVER.

Indoor unit

Extension pipe diameter

class Pipe diameter

Liquid 6.35(1/4) Liquid 6.35(1/4)

07/09 Gas 9.52(3/8) Gas 9.52(3/8)

Liquid 6.35(1/4) Liquid 6.35(1/4)

12 Gas 12.7(1/2) Gas 12.7(1/2)

Liquid 6.35(1/4) Liquid 6.35(1/4)

18 Gas 15.88(5/8) Gas 15.88(5/8)

Outdoor unit union diameter

For Liquid 6.35(1/4)

Indoor unit A Gas 12.7(1/2)

Liquid 6.35(1/4)

Indoor unit B Gas 12.7(1/2)

Liquid 6.35(1/4)

Indoor unit C Gas 9.52(3/8)

Unit : mm (inch)

Piping length each indoor unit (a, b, c) 25m

Total piping length (a+b+c) 50m

Height difference between units (H) 10m

Bending point for each unit 25

Total bending point 50

❋It does not matter which unit is higher.

Outdoor

unit

Indoor

units

OB287--1.qxp 10/9/01 3:29 PM Page 10

This manual suits for next models

Table of contents

Other Mitsubishi Electric Air Conditioner manuals

Mitsubishi Electric

Mitsubishi Electric MS-GJ12VA User manual

Mitsubishi Electric

Mitsubishi Electric MSZ-AP20VF User manual

Mitsubishi Electric

Mitsubishi Electric PLA-RP.BA Series User manual

Mitsubishi Electric

Mitsubishi Electric TRANE CITY MULTI TPMFYP-BM140 Series User manual

Mitsubishi Electric

Mitsubishi Electric Mr.Slim PLA-RP3AA User manual

Mitsubishi Electric

Mitsubishi Electric MSZ-HR50VFK User manual

Mitsubishi Electric

Mitsubishi Electric SLZ-KA25VA User manual

Mitsubishi Electric

Mitsubishi Electric MU-A07YV -E1 User manual

Mitsubishi Electric

Mitsubishi Electric Mr.Slim SUZ-SA100VA2 User manual

Mitsubishi Electric

Mitsubishi Electric TRANE CITY MULTI TPKFYP-BM142 Series User manual

Mitsubishi Electric

Mitsubishi Electric PEFY-P06 NMSU-E User manual

Mitsubishi Electric

Mitsubishi Electric MFZ-KT60VG-ER1 User manual

Mitsubishi Electric

Mitsubishi Electric MSZ-GA35VA User manual

Mitsubishi Electric

Mitsubishi Electric MXZ-8B140 User manual

Mitsubishi Electric

Mitsubishi Electric MSZ-GL25VGD User manual

Mitsubishi Electric

Mitsubishi Electric TRANE NTXMPH20A122A Series User manual

Mitsubishi Electric

Mitsubishi Electric MSZ-SF35VE3 User manual

Mitsubishi Electric

Mitsubishi Electric MFZ-KA25VA User manual

Mitsubishi Electric

Mitsubishi Electric Mr. SLim SEZ-KD09NA User manual

Mitsubishi Electric

Mitsubishi Electric MSZ-WR09/12NA User manual

Mitsubishi Electric

Mitsubishi Electric City Multi PCFY-P15NGMU-E Operating manual

Mitsubishi Electric

Mitsubishi Electric MSD-CD09VD-H1 User manual

Mitsubishi Electric

Mitsubishi Electric MSZ-HJ50VA User manual

Mitsubishi Electric

Mitsubishi Electric CITY MULTI CMB-P-NU-G1 User manual

Popular Air Conditioner manuals by other brands

Spheros

Spheros CC 355 instructions

Bosch

Bosch Climate 5000 SCI 24 CAS/ OU- OUE owner's manual

Panasonic

Panasonic CS-E12HKEW operating instructions

nedis

nedis ACMB1WT7 quick start guide

Samsung

Samsung AR KV Series User & installation manual

Daikin

Daikin FCFV50A Operation manual

Fujitsu

Fujitsu Inverter ASBA30JFC operating manual

Toshiba

Toshiba RAS-M10SMUV-E installation manual

Daikin

Daikin FXLQ20MAVE Operation manual

Hitachi

Hitachi RAS-E24CAK instruction manual

CIAT

CIAT Magister 2 Series Installation, Operation, Commissioning, Maintenance

Bestron

Bestron AAC6000 instruction manual

Hisense

Hisense 7K Use and Installation Instructions

Frigidaire

Frigidaire FFRE0533S1E0 Use & care guide

Samsung

Samsung AS09HM3N user manual

Frigidaire

Frigidaire CRA073PU11 use & care

Soleus Air

Soleus Air GB-PAC-08E4 operating instructions

McQuay

McQuay MCK020A Technical manual

Mitsubishi Electric MXZ-24UV - E1 User manual

Popular Air Conditioner manuals by other brands