Mitsubishi MUZ-GE25VA(H), MUZ-GE35VA(H), MUZ-GE42VA(H), MUZ-GE50VA(H), MUZ-GE60VA Service Manual

SPLIT-TYPE AIR CONDITIONERS

OUTDOOR UNIT

Revision B:

• MUZ-GE60VA -

have been added.

Please void OBH516 REVISED EDITION-A.

E1

and MUZ-GE71VA - E1

SERVICE MANUAL

Models

MUZ-GE25VA MUZ-GE25VAH MUZ-GE35VA MUZ-GE35VAH MUZ-GE42VA MUZ-GE42VAH -

E1

HFC

utilized

R410A

MUZ-GE50VA -

No. OBH516

REVISED EDITION-B

E1

MUZ-GE50VAH MUZ-GE60VA MUZ-GE71VA -

E1

MUZ-GE25VA MUZ-GE35VA MUZ-GE42VA

Indoor unit service manual MSZ-GE•VA Series (OBH515) MSZ-CGE•VA Series (OBH523)

CONTENTS

1. TECHNICAL CHANGES ··································· 3

2. PART NAMES AND FUNCTIONS ····················· 4

3. SPECIFICATION ················································ 5

4. NOISE CRITERIA CURVES ······························ 7

5. OUTLINES AND DIMENSIONS ························ 9

6. WIRING DIAGRAM ···········································11

7. REFRIGERANT SYSTEM DIAGRAM ············· 18

8. PERFORMANCE CURVES ····························· 21

9. ACTUA TOR CONTROL ··································· 40

10. SERVICE FUNCTIONS ···································· 41

11. TROUBLESHOOTING ····································· 41

12. DISASSEMBLY INSTRUCTIONS ···················· 61

PARTS CATALOG (OBB516)

NOTE:

RoHS compliant products have <G> mark on the spec name plate.

Revision A:

• MUZ-GE42VA -

E1

, MUZ-GE42VAH - E1, MUZ-GE50VA - E1 and MUZ-GE50VAH - E1 have been added.

Revision B:

• MUZ-GE60VA - E1 and MUZ-GE71VA - E1 have been added.

2

1

TECHNICAL CHANGES

MUZ-GE25VA MUZ-GE35VA MUZ-GE42VA MUZ-GE50VA MUZ-GE60VA MUZ-GE71VA -

1. New model

E1 E1 E1

MUZ-GE25VAH MUZ-GE35VAH MUZ-GE42VAH MUZ-GE50VAH -

E1 E1 E1 E1

3

2

PART NAMES AND FUNCTIONS

MUZ-GE25VA MUZ-GE25VAH MUZ-GE35VA MUZ-GE35VAH MUZ-GE42VA MUZ-GE42VAH

Air inlet

(back and side)

Piping

Drain hose

Air outlet

Drain outlet

MUZ-GE50VA MUZ-GE50VAH

Air inlet

(back and side)

MUZ-GE60VA MUZ-GE71VA

Piping

Drain hose

Air outlet

Drain outlet

(GE50VA)

Air inlet

(back and side)

Piping

Drain hose

Air outlet

ACCESSORIES

Model MUZ-GE25/35/42VA MUZ-GE50VA MUZ-GE60/71VA

Drain socket 1 1 1 Drain cap - 2 -

Drain outlet

4

3

SPECIFICATION

MUZ-

Outdoor model

Power supply Single phase, 230 V, 50 Hz

Capacity Rated frequency (Min.-Max.)

Breaker Capacity A 10 16 20

Power input 1 (Total)

Running current 1 (Total)

Power factor 1 (Total)

Electrical data

Starting current

Coefﬁ cient of performance (COP) 1 (Total)

Compressor

Fan motor

Dimensions W × H × D mm 800 × 550 × 285 Weight kg 30 33 36 54 50 53

Dehumidiﬁ cation Cooling /h 0.2 0.9 1.4 1.8 2.3

1 (Total) A 3.7 4.6 6.6 7.0 7.9 9.4

Model Output W 550 650 900 1,200

Current 1

Refrigeration oil (Model) cc 320 (NEO22) 450 (NEO22) Model RC0J50-DB RC0J50-EA RC0J60-AA RC0J60-BC

Current

Cooling Heating

Cooling Heating 700 955 1,460 1,565 1,770 2,110 Cooling Heating 3.7 4.6 6.6 7.0 7.9 9.4 Cooling Heating 82 90 96 97 98

Cooling 4.59 4.05 3.46 3.30 3.40 3.33

Heating 4.57 4.19 3.70 3.71 3.84 3.83

Cooling Heating 3.20 4.06 5.98 6.32 6.44 8.07

Cooling

1

Heating 0.27 0.31 0.32 0.93 0.82

kW

GE25VA

MUZ-

GE25VAH

2.5 (1.1 - 3.5) 3.5 (1.1 - 4.0) 4.2 (0.9 - 4.8) 5.0 (1.4 - 5.5) 6.0 (1.5 - 7.5) 7.1 (2.4 - 8.7)

3.2 (1.3 - 4.5) 4.0 (1.6 - 5.3) 5.4 (1.4 - 6.0) 5.8 (1.4 - 7.3) 6.8 (2.0 - 9.3) 8.1 (2.2 - 9.9)

W

A

%

A

545 865 1,215 1,515 1,760 2,130

2.9 4.2 5.6 6.8 7.8 9.3

82 90 94 96 98 99

KNB073FFDHC KNB092FFAHC

2.44 3.56 4.99 6.09 6.59 8.00

0.24 0.35 0.32 0.84 0.83

High

Cooling

Air ﬂ ow 1

Heating

Sound level 1

Med. 1,806 1,872 2,940 3,066 3,006

Low 1,170 1,776 1,086 1,740 1,692 1,512 High 2,106 2,016 – 2,952 2,892 Med. 1,806 1,776 2,940 2,952 2,892

Low 1,452 1,386 2,142 2,226 2,280

Cooling Heating 48 51 56 55

m3/h

dB(A)

High

Special remarks

Fan speed

Fan speed regulator 3 2 3 Refrigerant ﬁ lling capacity (R410A) kg 0.80 1.15 1.55 1.90

NOTE: Test conditions are based on ISO 5151.

Cooling: Indoor Dry-bulb temperature 27°C Wet-bulb temperature 19°C Outdoor Dry-bulb temperature 35°C Heating: Indoor Dry-bulb temperature 20°C Outdoor Dry-bulb temperature 7°C Wet-bulb temperature 6°C Refrigerant piping length (one way): 5 m 1 Measured under rated operating frequency.

Cooling

Heating

Med. 740 810 780 840

Low 490 770 490 480 450 High 860 870 – 810 Med. 740 770 780 810

Low 600 610 580 620 650

rpm

MUZ-

GE35VA

MUZ-

GE35VAH

47 50 54 55

MUZ-

GE42VA

MUZ-

GE42VAH

SNB130FGBHT

- 3,492 3,426

- 950

MUZ-

GE50VA

MUZ-

GE50VAH

840 × 850 × 330

GE60VA

SNB130FGBMT SNB172FEKMT

350(FV50S) 400(FV50S)

MUZ-

840 × 880 × 330

MUZ-

GE71VA

5

Speciﬁ cations and rating conditions of main electric parts

Item Current

transformer

Smoothing capacitor

Diode module

Fuse

Defrost heater (H) —

Intelligent power module

Expansion valve coil

Reactor (L, L61) 18 mH 23 mH 340 μH Power factor

controller

Currentdetecting resistor

Current-limiting PTC thermistor

Terminal block (TB1, TB2) 3 P

Relay

R.V.coil (21S4) 220 - 240 V AC Heater protector (26H) — IGBT (TR821) 30 A 600 V —

(CT761, CT781) 15 A —

(C61, C62, C63, C81, C82, C83,

CB1, CB2, CB3)

(F601, F701, F801,

(R937A,R937B) — 1.1 Ω 2 W —

Model

(DB61) 15 A 600 V 25 A 600 V — (DB65) 25 A 600 V —

(F62) — T2.0AL250V (F61) T20AL250V —

F880, F901)

(IC932) — 5 A 600 V

(IPM) 15 A 600 V 20 A 600 V

(LEV) 12 V DC

(PFC) — 20 A 600 V

(R61)

(R61,R62) —

(R825) 25 mΩ 5 W —

(R937, R938,

R939)

(PTC64,

PTC65)

(X63) 3 A 250 V — (X64) 20 A 250 V

(X66) — (X601) — 3 A 250 V (X602) — 3 A 250 V

MUZ-

GE25VA

(CT) 20 A —

45 mΩ 5 W

(1 element)

MUZ-

GE25VAH

230 V

130 W

3 A 250 V

Open 45°C

MUZ-

GE35VA

—

100 mΩ 5 W

(2 elements)

430 mΩ 2 W —

—

MUZ-

GE35VAH

620 μF 420 V 560 μF 350 V

230 V

130 W

3 A 250 V

Open 45°C

MUZ-

GE42VA

GE42VAH

T3.15AL250V

230 V

—

130 W

33 Ω

—

3 A 250 V

—

Open 45°C

MUZ-

180 mΩ 5 W

(2 elements)

MUZ-

GE50VA

—

MUZ-

GE50VAH

230 V

120 W

—

3 A 250 V

Open 45°C

MUZ-

GE60VA

—

MUZ-

GE71VA

6

4

NOISE CRITERIA CURVES

MUZ-GE25VA MUZ-GE25VAH

FUNCTION

COOLING HEATING

90

80

70

60

50

40

30

20

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

10

63 125 250 500 1000 2000 4000 8000

BAND CENTER FREQUENCIES, Hz

SPL(dB(A)) LINE

47 48

NC-10

NC-70

NC-60

NC-50

NC-40

NC-30

NC-20

MUZ-GE35VA MUZ-GE35VAH

FUNCTION

COOLING

HEATING

90

80

70

60

50

40

30

20

OCTAVE BAND SOUND PRESSURE LEVEL, dB re 0.0002 MICRO BAR

10

63 125 250 500 1000 2000 4000 8000

BAND CENTER FREQUENCIES, Hz

SPL(dB(A))

47 48

NC-10

LINE

NC-70

NC-60

NC-50

NC-40

NC-30

NC-20

MUZ-GE42VA MUZ-GE42VAH

FUNCTION

COOLING HEATING

90

80

70

60

50

40

30

20

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

10

63 125 250 500 1000 2000 4000 8000

BAND CENTER FREQUENCIES, Hz

SPL(dB(A)) LINE

50 51

NC-10

NC-70

NC-60

NC-50

NC-40

NC-30

NC-20

MUZ-GE50VA MUZ-GE50VAH

FUNCTION

COOLING HEATING

90

80

70

60

50

40

30

20

OCTAVE BAND SOUND PRESSURE LEVEL, dB re 0.0002 MICRO BAR

10

63 125 250 500 1000 2000 4000 8000

BAND CENTER FREQUENCIES, Hz

SPL(dB(A)) LINE

54 56

NC-10

NC-70

NC-60

NC-50

NC-40

NC-30

NC-20

7

MUZ-GE60VA MUZ-GE71VA

FUNCTION

COOLING HEATING

SPL(dB(A)) LINE

55 55

FUNCTION

COOLING HEATING

SPL(dB(A)) LINE

55 55

90

80

70

60

50

40

30

20

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

10

63 125 250 500 1000 2000 4000 8000

NC-10

BAND CENTER FREQUENCIES, Hz

90

80

NC-70

70

60

NC-60

50

NC-50

NC-40

NC-30

40

30

20

NC-20

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

10

63 125 250 500 1000 2000 4000 8000

NC-10

BAND CENTER FREQUENCIES, Hz

Test conditions Cooling: Dry-bulb temperature 35°C Heating: Dry-bulb temperature 7°C Wet-bulb temperature 6°C

OUTDOOR UNIT

NC-70

NC-60

NC-50

NC-40

NC-30

NC-20

1 m

MICROPHONE

8

5

OUTLINES AND DIMENSIONS

MUZ-GE25VA MUZ-GE25VAH MUZ-GE35VA MUZ-GE35VAH MUZ-GE42VA MUZ-GE42VAH

REQUIRED SPACE

Drain hole ø42 (MUZ-GE25/35/42VA) Drain hole ø33 (MUZ-GE25/35/42VAH)

40

800

17.5

69

Bolt pitch for

23

164.5

99.5

304~325

installation

170.5

Service port

100 mm or more

200 mm or more

Service panel

Liquid refrigerant pipe joint Refrigerant pipe (flared) ø6.35

35

43

Gas refrigerant pipe joint Refrigerant pipe (flared) ø9.52

344.5

285

550

44

Air in

2 holes 10 X 21

22.3

Handle

280

10

400

Air in

Air out

150

302.5 500 Bolt pitch for installation

100 mm or more

350 m

Unit: mm

m o

r more

MUZ-GE50VA MUZ-GE50VAH

515

299

66

Air in

51

34

Air in

330

Air out

121

500 840

170

850

430

REQUIRED SPACE

Drain holes ø33(MUZ-GE50VA)

40

100 mm o

360

4 holes 10 × 21

80

r mo

re

500 mm or more

155

90

500 mm or more

198

100 mm or more

350 mm or more

Service panel

Liquid refrigerant pipe joint Refrigerant pipe (flared) ø6.35

30°

35°

Gas refrigerant pipe joint Refrigerant pipe (flared) ø12.7

9

MUZ-GE60VA MUZ-GE71VA

Unit: mm

330

880

50

452

175

417.5 Air in

Air out

109

500

840

Drain hole

40

2-holes 10 21

81

REQUIRED SPACE

42

100 mm or more

360

500 mm or more

100 mm or more

350 mm or more

500 mm or more

Service panel

Liquid refrigerant pipe joint Refrigerant pipe (flared) Ø 6.35 (MUZ-GE60VA)

Ø 9.52 (MUZ-GE71VA)

35

44

164.5

99.5 195

Gas refrigerant pipe joint Refrigerant pipe (flared)

Ø 15.88

10

6

MUZ-GE25VA MUZ-GE35VA

WIRING DIAGRAM

11

MUZ-GE25VAH MUZ-GE35VAH

12

MUZ-GE42VA

13

MUZ-GE42VAH

14

MUZ-GE50VA

15

MUZ-GE50VAH

16

MUZ-GE60VA MUZ-GE71VA

17

7

REFRIGERANT SYSTEM DIAGRAM

MUZ-GE25VA MUZ-GE25VAH

Refrigerant pipe ø9.52 (with heat insulator)

Stop valve (with service port)

Flared connection

Stop valve

Refrigerant pipe ø6.35 (with heat insulator)

(with strainar)

4-way valve

Muffler

Capillary tube ø3.0×ø2.0×240

Discharge temperature thermistor RT62

LEV

Muffler

Compressor

Defrost thermistor RT61

Outdoor heat exchanger

temperature Outdoor heat exchanger

Refrigerant flow in cooling Refrigerant flow in heating

thermistor

RT68

Ambient

temperature

thermistor

RT65

Strainer #100

R.V. coil heating ON cooling OFF

Unit: mm

MUZ-GE35VA MUZ-GE35VAH MUZ-GE42VA MUZ-GE42VAH

Refrigerant pipe ø9.52 (with heat insulator)

Flared connection

Refrigerant pipe ø6.35 (with heat insulator)

Muffler

Stop valve (with service port)

Capillary tube ø3.0×ø2.0×240

Stop valve (with strainar)

4-way valve

Discharge temperature thermistor RT62

LEV

Muffler

Compressor

Defrost thermistor RT61

Capillary tube ø3.0×ø1.8×600(×2)

Refrigerant flow in cooling Refrigerant flow in heating

Outdoor heat exchanger

Strainer #100

R.V. coil heating ON cooling OFF

Outdoor heat exchanger temperature thermistor RT68

Ambient temperature thermistor RT65

Unit: mm

18

MUZ-GE50VA MUZ-GE50VAH

Unit: mm

Refrigerant pipe (with heat insulator)

Flared connection

Refrigerant pipe ø6.35 (with heat insulator)

ø

12.7

Stop valve (with service port)

Stop valve (with strainar)

4-way valve

Receiver

Muffler

#100

Discharge temperature thermistor RT62

Compressor

Capillary tube

ø

3.6

×

ø

2.4×50

LEV

Strainer

#100

Outdoor heat

Defrost thermistor RT61

Refrigerant flow in cooling Refrigerant flow in heating

exchanger

Outdoor heat exchanger temperature thermistor RT68

R.V. coil heating ON cooling OFF

Ambient temperature thermistor RT65

MUZ-GE60VA

Refrigerant pipe (with heat insulator)

Flared connection

Refrigerant pipe ø6.35 (with heat insulator)

ø

15.88

Stop valve (with service port)

Stop valve

4-way valve

Strainer

#100

Muffler

#100

Discharge temperature thermistor RT62

Compressor

Capillary tube

ø

4.0

×

ø

2.4×100

LEV

Strainer

#100

Outdoor heat

Defrost thermistor RT61

Refrigerant flow in cooling Refrigerant flow in heating

exchanger

Outdoor heat exchanger temperature thermistor RT68

R.V. coil heating ON cooling OFF

Ambient temperature thermistor RT65

19

MUZ-GE71VA

Refrigerant pipe (with heat insulator)

ø

15.88

Flared connection

4-way valve

Stop valve (with service port)

Muffler

#100

Discharge temperature thermistor RT62

Defrost thermistor RT61

Outdoor heat exchanger

Ambient temperature thermistor RT65

Unit: mm

Flared connection

Refrigerant pipe ø9.52 (with heat insulator)

Strainer

Stop valve

#100

Compressor

Capillary tube

ø

4.0

×

ø

2.4×100

LEV

Strainer

#100

Outdoor heat exchanger temperature thermistor RT68

R.V. coil heating ON cooling OFF

Refrigerant flow in cooling Refrigerant flow in heating

MAX. REFRIGERANT PIPING LENGTH and MAX. HEIGHT DIFFERENCE

Refrigerant piping: m Piping size O.D: mm

Max. Length A Max. Height difference B Gas Liquid

MUZ-GE25/35/42 20 12 9.52

12.7

MUZ-GE60 MUZ-GE71 9.52

30 15

Indoor unit

Max. Height

difference

B

Max. Length A

15.88

Outdoor unit

6.35MUZ-GE50

ADDITIONAL REFRIGERANT CHARGE (R410A: g)

Model

MUZ-GE25 800 MUZ-GE35/42 1,150

Outdoor unit

precharged

5 m 6 m 7 m 8 m 9 m 10 m 11 m 12 m 13 m 14 m 15 m 20 m

0 0 0 30 60 90 120 150 180 210 240 390

Calculation: X g = 30 g/m × (Refrigerant piping length (m) - 7)

Model

Outdoor unit

precharged

7 m 10 m 15 m 20 m 25 m 30 m

MUZ-GE50 1,550 0 60 160 260 360 460

Calculation: X g = 20 g/m × (Refrigerant piping length (m) – 7)

Model

Outdoor unit

precharged

7 m 10 m 15 m 20 m 25 m 30 m

MUZ-GE60 1,550 0 0 100 200 300 400

Calculation: X g = 20 g/m × (Refrigerant piping length (m) – 10)

Model

Outdoor unit

precharged

7 m 10 m 15 m 20 m 25 m 30 m

MUZ-GE71 1,900 0 0 275 550 825 1,100

Calculation: X g = 55 g/m × (Refrigerant piping length (m) – 10)

NOTE: Refrigerant piping exceeding 7 m requires additional refrigerant charge according to the calculation.

Refrigerant piping length (one way)

20

PERFORMANCE CURVES8

MUZ-GE25VA MUZ-GE25VAH MUZ-GE35VA MUZ-GE35VAH MUZ-GE42VA MUZ-GE42VAH MUZ-GE50VA MUZ-GE50VAH MUZ-GE60VA MUZ-GE71VA

The standard specifications apply only to the operation of the air conditioner under normal conditions. Since operating condi-

tions vary according to the areas where these units are installed, the following information has been provided to clarify the operating characteristics of the air conditioner under the conditions indicated by the performance curve.

(1) GUARANTEED VOLTAGE

198 ~ 264 V, 50 Hz

(2) AIR FLOW

Air flow should be set at MAX.

(3) MAIN READINGS

(1) Indoor intake air wet-bulb temperature: °C [WB] (2) Indoor outlet air wet-bulb temperature: °C [WB] (3) Outdoor intake air dry-bulb temperature: °C [DB] (4) Total input: W (5) Indoor intake air dry-bulb temperature: °C [DB]

(7) Total input: W Indoor air wet/dry-bulb temperature difference on the left side of the following chart shows the difference between the indoor intake air wet/dry-bulb temperature and the indoor outlet air wet/dry-bulb temperature for your reference at service.

How to measure the indoor air wet-bulb / dry-bulb temperature difference

1. Attach at least 2 sets of wet and dry-bulb thermometers to the indoor air intake as shown in the figure, and at least 2 sets of wet and dry-bulb thermometers to the indoor air outlet. The thermometers must be attached to the position where air speed is high.

2. Attach at least 2 sets of wet and dry-bulb thermometers to the outdoor air intake.

Cover the thermometers to prevent direct rays of the sun.

3. Check that the air filter is cleaned.

4. Open windows and doors of room.

5. Press the EMERGENCY OPERATION switch once (twice) to start the EMERGENCY COOL (HEAT) MODE.

6. When system stabilizes after more than 15 minutes, measure temperature and take an average temperature.

7. 10 minutes later, measure temperature again and check that the temperature does not change.

}

Cooling

Heating(6) Outdoor intake air wet-bulb temperature: °C [WB]

INDOOR UNIT OUTDOOR UNIT

Wet and dry-bulb thermometers FRONT VIEW

8-1. CAPACITY AND INPUT CURVES

8.4

7.7

7.1

6.5

5.9

5.3

4.7

10.4

9.5

8.7

8.0

7.2

6.5

5.7

10.2

9.4

8.6

7.9

7.1

6.4

5.7

9.3

8.6

7.9

7.2

6.5

5.8

5.2

6.6

6.1

5.6

5.1

4.6

difference (°C)

4.2

3.7

Indoor air Wet-bulb temperature

9.7

8.9

8.2

7.5

6.8

6.1

5.4

1.5

1.4

1.3

1.2

1.1

1.0

Capacity correction factors

0.9

-10-5 0 5 1015202530354045

Wet and dry-bulb thermometers BACK VIEW

Cooling capacity (

Outdoor intake air Dry-bulb temperature(°C)

at Rated frequency)

Indoor intake air Wet-bulb temperature( )

26

24

22 20 18

MUZ-GE25VA

MUZ-GE25VAH

MUZ-GE35VA

MUZ-GE35VAH

MUZ-GE50VA

MUZ-GE42VA

MUZ-GE50VAH

MUZ-GE42VAH

MUZ-GE71VA

MUZ-GE60VA

21