Mitsubishi Electric MSZ-SF25VE Manuale utente

CONTENTS

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

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

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

4. NOISE CRITERIA CURVES ······························ 6

5. OUTLINES AND DIMENSIONS ························ 7

6. WIRING DIAGRAM············································ 8

7. REFRIGERANT SYSTEM DIAGRAM ··············· 9

8. SERVICE FUNCTIONS ··································· 10

9. MICROPROCESSOR CONTROL ··················· 12

10. TROUBLESHOOTING····································· 18

11. DISASSEMBLY INSTRUCTIONS ···················· 30

SPLIT-TYPE AIR CONDITIONERS

SERVICE MANUAL

INDOOR UNIT

PARTS CATALOG (OBB600)

NOTE:

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

Models

MSZ-SF25VE -

MSZ-SF35VE -

MSZ-SF25VE -

MSZ-SF35VE -

MSZ-SF42VE -

MSZ-SF50VE -

MSZ-SF42VE -

MSZ-SF50VE -

MSZ-SF25VE -

EN1

MSZ-SF35VE -

EN1

MSZ-SF25VE -

EN2

MSZ-SF35VE -

EN2

MSZ-SF42VE -

EN1

MSZ-SF50VE -

EN1

MSZ-SF42VE -

EN2

MSZ-SF50VE -

EN2

No. OBH600

REVISED EDITION-A

Revision A:

• MSZ-SF25/35/42/50VE- E2 and MSZ-SF25/35/

42/50VE- EN2 have been added.

Please void OBH600.

Outdoor unit service manual

MUZ-SF·VE(H) Series (OBH629)

MXZ-C·VA Series (OB584)

MXZ-D·VA Series (OBH626)

MXZ-8B Series (OCH480)

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:

• MSZ-SF25/35/42/50VE- E2 and MSZ-SF25/35/42/50VE- EN2 have been added.

OBH600A

TECHNICAL CHANGES

MSZ-SF25VE- E1 MSZ-SF25VE-EN1

MSZ-SF35VE- E1 MSZ-SF35VE-EN1

MSZ-SF42VE- E1 MSZ-SF42VE-EN1

MSZ-SF50VE- E1 MSZ-SF50VE-EN1

1. New model

MSZ-SF25VE- E1 MSZ-SF25VE- E2 MSZ-SF25VE-EN1 MSZ-SF25VE-EN2

MSZ-SF35VE- E1 MSZ-SF35VE- E2 MSZ-SF35VE-EN1 MSZ-SF35VE-EN2

MSZ-SF42VE- E1 MSZ-SF42VE- E2 MSZ-SF42VE-EN1 MSZ-SF42VE-EN2

MSZ-SF50VE- E1 MSZ-SF50VE- E2 MSZ-SF50VE-EN1 MSZ-SF50VE-EN2

1. Indoor electronic control P.C. board has been changed.

OBH600A

ACCESSORIES

MSZ-SF25VE MSZ-SF35VE MSZ-SF42VE MSZ-SF50VE

PART NAMES AND FUNCTIONS

Model MSZ-SF25VE MSZ-SF35VE MSZ-SF42VE MSZ-SF50VE

Installation plate 1

Installation plate ﬁxing screw 4 × 25 mm 5

Remote controller holder 1

Fixing screw for 3.5 × 16 mm (Black) 2

Battery (AAA) for remote controller 2

Wireless remote controller 1

Felt tape (For left or left-rear piping) 1

Operation

indicator lamp

Remote control

receiving section

Emergency

operation switch

Horizontal vane

Air inlet

Air ﬁlter

(Nano platinum ﬁlter)

Air cleaning ﬁlter

(Electrostatic anti-allergy

enzyme ﬁlter, option)

Heat exchanger

Front panel

Air outlet

Remote controller

OBH600A

Indoor model MSZ-SF25VE MSZ-SF35VE MSZ-SF42VE MSZ-SF50VE

Power supply Single phase 230 V, 50 Hz

Electrical

data

Power input

Cooling W18 22

Heating 24 27 35

Running

current 1

Cooling A0.16 0.18

Heating 0.20 0.22 0.27

Fan

motor

Model RC0J21-AA

Current 1 Cooling A0.16 0.18

Heating 0.20 0.22 0.27

Dimensions W × H × D mm 798 × 299 × 195

Weight kg 10

Special remarks

Air direction 5

Airﬂow

Cooling

Super High

m3/h

546 594

High 432 474 492

Med. 336 402 414

Low 246 348 366

Silent 210 300 336

Heating

Super High

m3/h

618 660 720

High 492 498 546 588

Med. 402 432 480

Low 246 348 384

Silent 210 300 336

Sound level

Cooling

Super High

dB(A)

42 45

High 36 38 40

Med. 30 34 36

Low 24 31 33

Silent 21 28 30

Heating

Super High

dB(A)

45 46 47 49

High 39 42 43

Med. 34 36 38

Low 24 31 33

Silent 21 28 30

Fan speed

Cooling

Super High

rpm

1,200 1,280

High 1,000 1,070 1,100

Med. 820 940 970

Low 660 850 880

Silent 590 760 820

Heating

Super High

rpm

1,330 1,400 1,500

High 1,100 1,120 1,200 1,270

Med. 940 1,000 1,080

Low 660 850 910

Silent 590 760 820

Fan speed regulator 5

Remote controller model SG11D

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 Wet-bulb temperature 15°C

Outdoor Dry-bulb temperature 7°C Wet-bulb temperature 6°C

1 Measured under rated operating frequency.

SPECIFICATION

Specifications and rated conditions of main electric parts

Fuse (F11) T3.15AL250V

Horizontal vane motor (MV) 12 VDC

Varistor (NR11) S10K300E2K1 (ERZV10D471)

Terminal block (TB) 3P

OBH600A

MSZ-SF25VE

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

Super High

FAN SPEED

HEATING

NC-10

MSZ-SF35VE

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

Super High

FAN SPEED

HEATING

NC-10

NOISE CRITERIA CURVES

Test conditions

Cooling: Dry-bulb temperature 27 °C

Wet-bulb temperature 19 °C

Heating: Dry-bulb temperature 20 °C

Wet-bulb temperature 15 °C

INDOOR UNIT

WALL

MICROPHONE

0.8m

MSZ-SF42VE

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

Super High

FAN SPEED

HEATING

NC-10

MSZ-SF50VE

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

Super High

FAN SPEED

HEATING

NC-10

OBH600A

Unit: mm

MSZ-SF25VE MSZ-SF35VE MSZ-SF42VE MSZ-SF50VE

225225

162.5 162.5

3.5

87.5 87.5

331.5 309.5

215.5

257

258

22235

236

67.5 89.5

108.5

100

()80

193

195

5871

299

577 16061

798

778 10

216.5

Piping

Insulation Φ37 O.D

Liquid line Φ6.35 - 0.39m (Flared connection Φ6.35)

Gas line Φ9.52 - 0.34m [Flared connection Φ9.52 (MSZ-SF25/35/42VE), Φ12.7 (MSZ-SF50VE)]

Drain hose Inslation Φ28 Connected part Φ16 O.D

Piping

Insulation Φ37 O.D

Liquid line Φ6.35 - 0.5m (Flared connection Φ6.35)

Gas line Φ9.52 - 0.43m [Flared connection Φ9.52 (MSZ-SF25/35/42VE), Φ12.7 (MSZ-SF50VE)]

Drain hose Inslation Φ28 Connected part Φ16 O.D

(MSZ-SF25/35/42/50VE- E1 , E2 )

(MSZ-SF25/35/42/50VE- EN1 , EN2 )

11×26 Oblong hole 11×20 Oblong hole

Installation plate

Indoor unit

Wall hole Φ65

Air inAir inAir inAir in

Installation plate

Piping

Drain hose

Air out

OUTLINES AND DIMENSIONS

OBH600A

MSZ-SF25VE MSZ-SF42VE

WIRING DIAGRAM

MSZ-SF35VE MSZ-SF50VE

OBH600A

Indoor

heat

exchanger

Flared connection

Room temperature

thermistor

RT11

Flared connection

Refrigerant pipe ø9.52 (MSZ-SF25/35/42VE)

ø12.7 (MSZ-SF50VE)

(with heat insulator)

Refrigerant pipe ø6.35

(with heat insulator)

Indoor coil

thermistor

RT12 (main)

Indoor coil

thermistor

RT13 (sub)

Refrigerant flow in cooling

Refrigerant flow in heating

Unit: mm

REFRIGERANT SYSTEM DIAGRAM

MSZ-SF25VE MSZ-SF35VE MSZ-SF42VE MSZ-SF50VE

OBH600A

8-1. TIMER SHORT MODE

For service, the following set time can be shortened by short circuit of JPG and JPS on the electronic control P.C. board.

(Refer to 10-7.)

Set time: 3 minutes →3 seconds (It takes 3 minutes for the compressor to start operation. However, the starting time is

shortened by short circuit of JPG and JPS.)

8-2. P.C. BOARD MODIFICATION FOR INDIVIDUAL OPERATION

A maximum of 4 indoor units with wireless remote controllers can be used in a room.

In this case, to operate each indoor unit individually by each remote controller, P.C. boards of remote controller must be

modified according to the number of the indoor unit.

How to modify the remote controller P.C. board

Remove batteries before modification.

The board has a print as shown below:

The P.C. board has the print “J1” and “J2”. Solder “J1” and “J2” according to the number of indoor unit as shown in Table 1.

After modification, press the RESET button.

NOTE: For modification, take out the batteries and press the OPERATE/STOP (ON/OFF) button 2 or 3 times at first.

After modification, put back the batteries then press the RESET button.

Table 1

1 unit operation 2 units operation 3 units operation 4 units operation

No. 1 unit No modiﬁcation Same as at left Same as at left Same as at left

No. 2 unit — Solder J1 Same as at left Same as at left

No. 3 unit — — Solder J2 Same as at left

No. 4 unit — — — Solder both J1 and J2

How to set the remote controller exclusively for particular indoor unit

After you turn the breaker ON, the first remote controller that sends the signal to the indoor unit will be regarded as the remote

controller for the indoor unit.

The indoor unit will only accept the signal from the remote controller that has been assigned to the indoor unit once they are set.

The setting will be cancelled if the breaker is turned OFF, or the power supply is shut down.

Please conduct the above setting once again after the power has restored.

SERVICE FUNCTIONS

J1 J2

MSZ-SF25VE MSZ-SF35VE MSZ-SF42VE MSZ-SF50VE

OBH600A

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