Mitsubishi Electric MSZ-EF22VEW 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 ························ 8

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

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

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

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

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

11. DISASSEMBLY INSTRUCTIONS ···················· 31

SPLIT-TYPE AIR CONDITIONERS

SERVICE MANUAL No. OBH589

INDOOR UNIT

PARTS CATALOG (OBB589)

NOTE:

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

Models

MSZ-EF22VEW -

MSZ-EF22VEB -

MSZ-EF22VES -

MSZ-EF25VEW -

MSZ-EF25VEB -

MSZ-EF25VES -

MSZ-EF35VEW -

MSZ-EF35VEB -

MSZ-EF35VES -

MSZ-EF42VEW -

MSZ-EF42VEB -

MSZ-EF42VES -

MSZ-EF50VEW -

MSZ-EF50VEB -

MSZ-EF50VES -

Models

MSZ-EF22VEW -

MSZ-EF25VEW -

MSZ-EF35VEW -

MSZ-EF42VEW -

MSZ-EF50VEW -

MSZ-EF22VEB -

MSZ-EF25VEB -

MSZ-EF35VEB -

MSZ-EF42VEB -

MSZ-EF50VEB -

MSZ-EF22VES -

MSZ-EF25VES -

MSZ-EF35VES -

MSZ-EF42VES -

MSZ-EF50VES -

Outdoor unit service manual

MUZ-EF·VE(H) Series (OBH590)

MXZ-C·VA Series (OB584)

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.

TECHNICAL CHANGES

MSZ-EF22VEW - E1 MSZ-EF25VEW - E1 MSZ-EF35VEW - E1

MSZ-EF42VEW - E1 MSZ-EF50VEW - E1

MSZ-EF22VEB - E1 MSZ-EF25VEB - E1 MSZ-EF35VEB - E1

MSZ-EF42VEB - E1 MSZ-EF50VEB - E1

MSZ-EF22VES - E1 MSZ-EF25VES - E1 MSZ-EF35VES - E1

MSZ-EF42VES - E1 MSZ-EF50VES - E1

1. New model

These models are compatible with the outdoor units with low standby power control.

Connecting these models to the MUZ-EF·VE(H)-series outdoor units enables the low standby power control. Refer to the tech-

nical guide (OBT17) about the low standby power control.

These models may be connected to the MUZ-EF·VE(H) series after once connected to the MXZ-VA series and operated, for

example because of relocation. In that case, the MUZ-EF·VE(H) series outdoor units will not operate without taking a step.

Follow the procedure described in 10-2. "Deleting the memorized abnormal condition".

ACCESSORIES

MSZ-EF22VEW MSZ-EF25VEW MSZ-EF35VEW MSZ-EF42VEW MSZ-EF50VEW

MSZ-EF22VEB MSZ-EF25VEB MSZ-EF35VEB MSZ-EF42VEB MSZ-EF50VEB

MSZ-EF22VES MSZ-EF25VES MSZ-EF35VES MSZ-EF42VES MSZ-EF50VES

PART NAMES AND FUNCTIONS

Model

MSZ-EF22VEW MSZ-EF25VEW MSZ-EF35VEW MSZ-EF42VEW MSZ-EF50VEW

MSZ-EF22VEB MSZ-EF25VEB MSZ-EF35VEB MSZ-EF42VEB MSZ-EF50VEB

MSZ-EF22VES MSZ-EF25VES MSZ-EF35VES MSZ-EF42VES MSZ-EF50VES

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

Soft dry cloth (VEB type only) 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

Indoor model

MSZ-EF22VEW

MSZ-EF22VEB

MSZ-EF22VES

MSZ-EF25VEW

MSZ-EF25VEB

MSZ-EF25VES

MSZ-EF35VEW

MSZ-EF35VEB

MSZ-EF35VES

MSZ-EF42VEW

MSZ-EF42VEB

MSZ-EF42VES

MSZ-EF50VEW

MSZ-EF50VEB

MSZ-EF50VES

Power supply Single phase 230 V, 50 Hz

Electrical

data

Power input

Cooling W14 18

Heating 27 31 34

Running

current 1

Cooling A0.14 0.18

Heating 0.26 0.30 0.32

Fan

motor

Model RC0J40

Current 1 Cooling A0.14 0.18

Heating 0.26 0.30 0.32

Dimensions W × H × D mm 895 × 299 × 195

Weight kg 11.5

Special remarks

Air direction 5

Airﬂow

Cooling

Super High

m3/h

630 618 660

High 498 534 558

Med. 378 462 474

Low 276 396 408

Silent 240

Heating

Super High

m3/h

714 762 792

High 534 594 666

Med. 372 468 540

Low 276 378 438

Silent 240 330 384

Sound level

Cooling

Super High

dB(A)

42 43

High 36 39 40

Med. 29 35 36

Low 23 24 31 33

Silent 21 28 30

Heating

Super High

dB(A)

45 46 48 49

High 37 38 41 43

Med. 29 30 35 37

Low 24 30 33

Silent 21 28 30

Fan speed

Cooling

Super High

rpm

1,200 1,180 1,240

High 990 1,050 1,080

Med. 800 930 950

Low 630 830 850

Silent 570 750

Heating

Super High

rpm

1,330 1,400 1,440

High 1,050 1,140 1,250

Med. 790 940 1,060

Low 630 800 890

Silent 570 720 810

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

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

1 Measured under rated operating frequency.

SPECIFICATION

MSZ-EF22VEW MSZ-EF25VEW

MSZ-EF22VEB MSZ-EF25VEB

MSZ-EF22VES MSZ-EF25VES

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-EF35VEW

MSZ-EF35VEB

MSZ-EF35VES

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

Specifications and rating conditions of main electric parts

Fuse (F11) T3.15AL250V

Horizontal vane motor (MV) 12 VDC

Varistor (NR11) S10K300E2K1 (ERZV10D471)

Terminal block (TB) 3P

Test conditions

Cooling: Dry-bulb temperature 27 °C

Wet-bulb temperature 19 °C

Heating: Dry-bulb temperature 20 °C

INDOOR UNIT

WALL

MICROPHONE

0.8m

MSZ-EF42VEW

MSZ-EF42VEB

MSZ-EF42VES

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-EF50VEW

MSZ-EF50VEB

MSZ-EF50VES

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

Unit: mm

MSZ-EF22VEW MSZ-EF25VEW MSZ-EF35VEW MSZ-EF42VEW MSZ-EF50VEW

MSZ-EF22VEB MSZ-EF25VEB MSZ-EF35VEB MSZ-EF42VEB MSZ-EF50VEB

MSZ-EF22VES MSZ-EF25VES MSZ-EF35VES MSZ-EF42VES MSZ-EF50VES

Piping

Insulation ø37 O.D

Liquid line ø6.35 - 0.5 m (Flared connection ø6.35)

Gas line ø9.52 - 0.43 m

(Flared connection: ø9.52 (22/25/35/42), ø12.7 (50))

Drain hose Insulation ø28 O.D Connected part ø16 O.D

OUTLINES AND DIMENSIONS

MSZ-EF22VEW MSZ-EF25VEW MSZ-EF35VEW MSZ-EF42VEW MSZ-EF50VEW

MSZ-EF22VEB MSZ-EF25VEB MSZ-EF35VEB MSZ-EF42VEB MSZ-EF50VEB

MSZ-EF22VES MSZ-EF25VES MSZ-EF35VES MSZ-EF42VES MSZ-EF50VES

WIRING DIAGRAM

Indoor

heat

exchanger

Flared connection

Room temperature

thermistor

RT11

Flared connection

Refrigerant pipe ø9.52 (MSZ-EF22/25/35/42)

ø12.7 (MSZ-EF50)

(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-EF22VEW MSZ-EF25VEW MSZ-EF35VEW MSZ-EF42VEW MSZ-EF50VEW

MSZ-EF22VEB MSZ-EF25VEB MSZ-EF35VEB MSZ-EF42VEB MSZ-EF50VEB

MSZ-EF22VES MSZ-EF25VES MSZ-EF35VES MSZ-EF42VES MSZ-EF50VES

8-1. TIMER SHORT MODE

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

The time will be shortened as follows. (Refer to 10-7.)

Set time: 1 minute →1 second

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 twice 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-EF22VEW MSZ-EF25VEW MSZ-EF35VEW MSZ-EF42VEW MSZ-EF50VEW

MSZ-EF22VEB MSZ-EF25VEB MSZ-EF35VEB MSZ-EF42VEB MSZ-EF50VEB

MSZ-EF22VES MSZ-EF25VES MSZ-EF35VES MSZ-EF42VES MSZ-EF50VES

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