Mitsubishi Electric MUZ-FH25VE-E1 Manuale utente

SERVICE MANUAL

CONTENTS

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

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

3. SPECIFICATION················································ 4

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

5. OUTLINES AND DIMENSIONS ························ 8

6. WIRING DIAGRAM············································ 9

7. REFRIGERANT SYSTEM DIAGRAM ············· 12

8. PERFORMANCE CURVES ····························· 14

9. ACTUATOR CONTROL··································· 25

10. SERVICE FUNCTIONS···································· 26

11. TROUBLESHOOTING ····································· 27

12. DISASSEMBLY INSTRUCTIONS···················· 48

Models

SPLIT-TYPE AIR CONDITIONERS

NOTE:

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

HFC

utilized

R410A

No. OBH624

REVISED EDITION-B

OUTDOOR UNIT

Indoor unit service manual

MSZ-FH•VE Series (OBH623)

PARTS CATALOG (OBB624)

MUZ-FH25VE -E1 , ER1

MUZ-FH25VE -E2 , ER2

MUZ-FH35VE -E1 , ER1

MUZ-FH35VE -E2 , ER2

MUZ-FH50VE -E1 , ER1

Please void OBH624 REVISED EDITION-A.

Revision B:

• MUZ-FH25VE- ER1 , MUZ-FH35VE- ER1 ,

MUZ-FH50VE- ER1 , MUZ-FH25VE- E2 ,

MUZ-FH35VE- E2 , MUZ-FH25VE- ER2

and MUZ-FH35VE- ER2 have been

added.

MUZ-FH25VE

MUZ-FH35VE

Prepare the proper tools.

Prepare the proper protectors.

Provide adequate ventilation.

After stopping the operation of the air conditioner, turn off the power-supply breaker and remove the power plug.

Discharge the capacitor before the work involving the electric parts.

Do not perform the work involving the electric parts with wet hands.

Do not pour water into the electric parts.

Do not touch the refrigerant.

Do not touch the hot or cold areas in the refrigeration cycle.

When the repair or the inspection of the circuit needs to be done without turning off the power, exercise great caution not to

touch the live parts.

Use the speciﬁed refrigerant only

Never use any refrigerant other than that specified.

Doing so may cause a burst, an explosion, or fire when the unit is being used, serviced, or disposed of.

Correct refrigerant is specified in the manuals and on the spec labels provided with our products.

We will not be held responsible for mechanical failure, system malfunction, unit breakdown or accidents caused by

failure to follow the instructions.

Revision A:

•

MUZ-FH50VE-

has been added.

Revision B:

• MUZ-FH25VE- ER1 , MUZ-FH35VE- ER1 , MUZ-FH50VE- ER1 , MUZ-FH25VE- E2 , MUZ-FH35VE- E2 , MUZ-FH25VE- ER2

and MUZ-FH35VE- ER2 have been added.

OBH624B

MUZ-FH25VE - E1 , ER1

MUZ-FH35VE - E1 , ER1

MUZ-FH50VE - E1 , ER1

1. New model

MUZ-FH25VE - E1 , ER1 MUZ-FH25VE - E2 , ER2

MUZ-FH35VE - E1 , ER1 MUZ-FH35VE - E2 , ER2

1. Condenser net has been changed. (Plastic Steel wire)

TECHNICAL CHANGES

Air outlet

Drain outlet

Piping

Drain hose

Air inlet

(back and side)

MUZ-FH25VE

MUZ-FH35VE

PART NAMES AND FUNCTIONS

ACCESSORIES

Model

MUZ-FH25VE

MUZ-FH35VE

MUZ-FH50VE

Drain socket 1

MUZ-FH50VE

Piping

Air outlet

Drain outlet

Air inlet

(back and side)

Drain hose

OBH624B

Outdoor model MUZ-FH25VE MUZ-FH35VE

Power supply Single phase, 230 V, 50 Hz

Capacity

Rated frequency (Min.-Max.)

Cooling kW 2.5 (1.4 - 3.5) 3.5 (0.8 - 4.0)

Heating 3.2 (1.8 - 5.5) 4.0 (1.0 - 6.3)

Breaker Capacity A 10

Electrical data

Power input 1 (Total) Cooling W485 820

Heating 580 800

Running current 1

(Total)

Cooling A2.6 3.9

Heating 2.9 3.8

Power factor 1 (Total) Cooling %81 91

Heating 86 91

Starting current 1 (Total) A 2.9 3.9

Coefﬁcient of performance

(COP) 1 (Total)

Cooling 5.15 4.27

Heating 5.52 5.00

Compressor

Model SNB140FRUMT

Output W 950

Current 1Cooling A2.04 3.32

Heating 2.34 3.22

Refrigeration oil (Model) L 0.35 (FV50S)

Fan motor

Model RC0J50-CI

Current 1Cooling A0.28 0.30

Heating 0.28 0.30

Dimensions W × H × D mm 800 × 550 × 285

Weight kg 37

Special remarks

Dehumidiﬁcation Cooling L/h 0.2 0.8

Air ﬂow 1

Cooling High

m3/h

1,806

Low 1,038

Heating

High 2,016

Med. 1,710

Low 1,326

Sound

level 1

Cooling dB(A) 46 49

Heating 49 50

Fan speed

Cooling High

rpm

810

Low 490

Heating

High 900

Med. 770

Low 610

Fan speed regulator 3

Refrigerant ﬁlling capacity (R410A) kg 1.15

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.

SPECIFICATION

OBH624B

Outdoor model MUZ-FH50VE

Power supply Single phase, 230 V, 50 Hz

Capacity

Rated frequency (Min. - Max.)

Cooling kW 5.0 (1.9 - 6.0)

Heating 6.0 (1.7 - 8.7)

Breaker Capacity A 16

Electrical data

Power input 1 (Total) Cooling W1,380

Heating 1,480

Running current 1

(Total)

Cooling A6.1

Heating 6.5

Power factor 1 (Total) Cooling %98

Heating 98

Starting current 1 (Total) A 6.5

Coefﬁcient of performance

(COP) 1 (Total)

Cooling 3.62

Heating 4.05

Compressor

Model SNB172FEKMT

Output W 1,200

Current 1 Cooling A4.98

Heating 5.37

Refrigeration oil (Model) L 0.40 (FV50S)

Fan motor

Model RC0J60-BC

Current 1Cooling A0.83

Heating 0.84

Dimensions W × H × D mm 840 × 880 × 330

Weight kg 55

Special remarks

Dehumidiﬁcation Cooling L/h 2.0

Air ﬂow 1

Cooling

High

m3/h

3,006

Med. 3,006

Low 1,626

Heating

High 2,892

Med. 2,892

Low 2,280

Sound level 1 Cooling dB(A) 51

Heating 54

Fan speed

Cooling

High

rpm

840

Med. 840

Low 480

Heating

High 810

Med. 810

Low 650

Fan speed regulator 3

Refrigerant ﬁlling capacity (R410A) kg 1.55

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.

OBH624B

Speciﬁcations and rated conditions of main electric parts

Model

Item MUZ-FH25VE MUZ-FH35VE

Smoothing

capacitor (C61, C62) 600 μF/ 620 μF 420 V

Diode module (DB61) 15 A 600 V

Fuse (F61) T20AL250V

(F701, F801, F901)

T3.15AL250V

Power module (IC700) 15 A 600 V

(IC932) 8A600V

Expansion valve

coil (LEV) 12 VDC

Reactor (L61) 23 mH

Power factor

controller (IC820) 20A 600V

Circuit

protection (PTC64, PTC65) 33 Ω

Terminal block (TB) 5 P

Relay

(X63) 3 A 250 V

(X64) 20 A 250 V

(X69) 10A 230V

R.V.coil (21S4) 220 - 240 V AC

Speciﬁcations and rated conditions of main electric parts

Model

Item MUZ-FH50VE

Smoothing

capacitor

(CB1, CB2, CB3)

560 μF 450 V

Fuse

(F601, F880, F901)

T3.15AL250 V

IGBT module (IC932) 5 A 600 V

(IC700) 20 A 600 V

Expansion valve

coil (LEV) 12 VDC

Reactor (L) 340 μH

Diode module (IC820) 20 A 600 V

Circuit

protection (PTC64, PTC65) 33 Ω

Terminal block (TB1, TB2) 3 P

Relay

(X64) 20 A 250 V

(X65) 20 A 250 V

(X69) 10 A 250 V

(X601) 3 A 250 V

(X602) 3 A 250 V

R.V. coil (21S4) 220 - 240 V AC

OBH624B

10 63 125 250 500 1000 2000 4000 8000

NC-60

NC-50

NC-40

NC-30

NC-20

NC-70

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

BAND CENTER FREQUENCIES, Hz

COOLING

FUNCTION SPL(dB(A)) LINE

HEATING

NC-10

MUZ-FH25VE

10 63 125 250 500 1000 2000 4000 8000

NC-60

NC-50

NC-40

NC-30

NC-20

NC-70

OCTAVE BAND SOUND PRESSURE LEVEL, dB re 0.0002 MICRO BAR

BAND CENTER FREQUENCIES, Hz

COOLING

FUNCTION SPL(dB(A)) LINE

HEATING

NC-10

MUZ-FH35VE

NOISE CRITERIA CURVES

Test conditions

Cooling: Dry-bulb temperature 35°C

Heating: Dry-bulb temperature 7°C Wet-bulb temperature 6°C

OUTDOOR UNIT

MICROPHONE

1 m

MUZ-FH50VE

10 63 125 250 500 1000 2000 4000 8000

NC-60

NC-50

NC-40

NC-30

NC-20

NC-70

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

BAND CENTER FREQUENCIES, Hz

COOLING

FUNCTION SPL(dB(A)) LINE

HEATING

NC-10

OBH624B

800

302.5

500 Bolt pitch for installation

150

22.3

Handle

550

280

164.5

99.5

170.5

Service panel

Service port

285

344.5

400

Air in

Air out

Air in

17.5

Bolt pitch for

installation

304~325

Liquid refrigerant pipe joint

Refrigerant pipe (flared) ø6.35

Gas refrigerant pipe joint

Refrigerant pipe (flared) ø9.52

2 holes 10 X 21

REQUIRED SPACE

350 mm or more

100 mm or more

Drain hole ø42

*1 100 mm or more when front

and sides of unit are clear

*2 When any 2 sides of left, right

and rear of unit are clear

Clear *1

200 mm or

more *2

Unit: mm

MUZ-FH25VE

MUZ-FH35VE

OUTLINES AND DIMENSIONS

MUZ-FH50VE

417.5

Drain hole

175 500

330

Air in

Air out

2-holes 10 21

360

840

109

880

452

Service panel

99.5

164.5

195

Liquid refrigerant pipe joint

Refrigerant pipe (flared) Ø6.35

Gas refrigerant pipe joint

Refrigerant pipe (flared) Ø12.7

350 mm or more

100 mm or more

REQUIRED SPACE

100 mm or more

500 mm

or more *2

*1 500 mm or more when front

and sides of unit are clear

*2 When any 2 sides of left, right

and rear of unit are clear

Clear *1

OBH624B

WIRING DIAGRAM

MUZ-FH25VE - E1

MUZ-FH35VE - E1

MUZ-FH25VE - E2 , ER1 , ER2

MUZ-FH35VE - E2 , ER1 , ER2

OBH624B

MUZ-FH50VE - E1

OBH624B

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