Mitsubishi Electric MSZ-DM50VA 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···········10

8. SERVICE FUNCTIONS······························ 11

9. MICROPROCESSOR CONTROL ················13

10. TROUBLESHOOTING·······························17

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

Outdoor unit service manual

MUZ-DM·VA Series (OBH781)

MXZ-DM•VA Series (OBH739)

MSZ-DM50VA

INDOOR UNIT

Models

MSZ-DM50VA -ER1

MSZ-DM60VA -ER1

MSZ-DM71VA -ER1

SERVICE MANUAL

NOTE:

RoHS compliant products have

<G> mark on the spec name plate.

No. OBH780

PARTS CATALOG (OBB780)

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.

OBH780

1TECHNICAL CHANGES

MSZ-DM50VA - ER1

MSZ-DM60VA - ER1

MSZ-DM71VA - ER1

1. New model

OBH780

ACCESSORIES

MSZ-DM50VA

Installation plate 1

Installation plate ﬁxing screw 4 ×25 mm 5

Wireless remote controller 1

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

Battery (AAA) for remote controller 2

2PART NAMES AND FUNCTIONS

Operation indicator lamp

Remote control

receiving section

Horizontal vane

Air inlet

Air ¿lter

Front panel

Air outlet Heat exchanger

Emergency operation switch

Remote controller

Air cleaning ¿lter [Silver-

ionized air purifier filter,

option]

Display section

Operation indicator lamp

Remote control

receiving section

Horizontal vane

Air inlet

Air ¿lter

Front panel

Air outlet Heat exchanger

Emergency operation switch

Air cleaning ¿lter

[Silver-ionized air purifier

filter, option]

Remote controller

MSZ-DM60VA MSZ-DM71VA

OBH780

3SPECIFICATION

Indoor model MSZ-DM50VA MSZ-DM60VA MSZ-DM71VA

Power supply Single phase 230 V, 50 Hz

Breaker Capacity A 12 16

Electrical data

Power input 1 (Total) Cooling W2,050 1,900 2,330

Heating 1,480 1,970 2,440

Running current 1

(Total) Cooling A9.0 8.4 10.3

Heating 6.6 8.7 10.8

Power factor 1 (Total) Cooling %99 98

Heating 97 98

Starting current 1 (Total) A 9.0 8.7 10.8

Fan motor

Model RC0J40-QA RC0J30-MD

Current 1 Cooling A0.27 0.49

Heating 0.34 0.49

Dimensions W × H × D mm 799 × 290 × 232 923 × 305 × 250

Weight kg 9 13

Special remarks

Air direction 5

Airﬂow

Cooling

Super High

m3/h

772 1,192

High 667 900

Med. 547 729

Low 380 555 598

Heating

Super High

m3/h

861 1,192

High 667 957 981

Med. 497 752 763

Low 364 565 619

Sound level

Cooling

Super High

dB(A)

43 50

High 40 44

Med. 36 38

Low 28 31 33

Heating

Super High

dB(A)

47 49

High 41 44

Med. 34 38

Low 27 31 33

Fan speed

Cooling

Super High

rpm

1,120 1,250

High 1,000

Med. 860 850

Low 660 690 730

Heating

Super High

rpm

1,220 1,250

High 1,000 1,050 1,070

Med. 800 870 880

Low 640 700 750

Fan speed regulator 4

Remote controller model RH16A

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.

Specifications and rated conditions of main electric parts

Fuse (F11) T3.15AL250V

Horizontal vane motor (MV) 12 V DC

Varistor

(NR11)

470 V

Terminal block (TB) 5P

OBH780

INDOOR UNIT WALL

MICROPHONE

0.8m

Test conditions

Cooling : Dry-bulb temperature 27°C Wet-bulb temperature 19°C

Heating : Dry-bulb temperature 20°C

4NOISE CRITERIA CURVES

MSZ-DM50VA

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

OBH780

INDOOR UNIT WALL

MICROPHONE

0.8m

Test conditions

Cooling : Dry-bulb temperature 27°C Wet-bulb temperature 19°C

Heating : Dry-bulb temperature 20°C

MSZ-DM60VA MSZ-DM71VA

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

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

OBH780

MSZ-DM50VA Unit: mm

5OUTLINES AND DIMENSIONS

MSZ-DM50VA

2325

799

785 7

290

12063049

103

130

100

(57°)

225 225 80.5

80.5

61.5

59.5340338

249

248 21.5

167 157

207.5

206.5

172

Air in

Installation plate

Piping

Drain hose

Air out

11×26 Oblong hole 11×20 Oblong hole

Installation plate

Indoor unit

Wall hole Ø65

132

56 18

Piping

Insulation Ø37 O.D

Liquid line Ø7.0 - 0.39m (Flared connection Ø6.35)

Gas line Ø9.52 - 0.34m (Flared connection Ø12.7)

Drain hose

Insulation Ø28 Connected part Ø16 O.D

MSZ-DM60VA MSZ-DM71VA

Piping

Insulation Ø50 O.D

Liquid line Ø8 - 0.39m (Flared connection Ø6.35)

Gas line Ø12 - 0.34m (Flared connection Ø15.88)

Drain hose

Insulation Connected part Ø16 O.D

MSZ-DM60VA

MSZ-DM71VA

Piping

Insulation Ø50 O.D

Liquid line Ø8 - 0.39m (Flared connection Ø9.52)

Gas line Ø12 - 0.34m (Flared connection Ø15.88)

Drain hose

Insulation Connected part Ø16 O.D

132

OBH780

6WIRING DIAGRAM

MSZ-DM60VA MSZ-DM71VA

MSZ-DM50VA

OBH780

Unit: mm

7REFRIGERANT SYSTEM DIAGRAM

MSZ-DM50VA

Indoor

heat

exchanger

Flared connection

Room temperature

thermistor

RT11

Flared connection

Refrigerant flow in cooling

Refrigerant flow in heating

Refrigerant pipe ø12.7

(with heat insulator)

Refrigerant pipe ø6.35

(with heat insulator)

Indoor coil

thermistor

RT12

Indoor coil

thermistor

RT13

MSZ-DM60VA MSZ-DM71VA

Indoor

heat

exchanger

Flared connection

Room temperature

thermistor

RT11

Flared connection

Refrigerant flow in cooling

Refrigerant flow in heating

Refrigerant pipe ø15.88

(with heat insulator)

Refrigerant pipe ø6.35 (MSZ-DM60VA)

ø9.52 (MSZ-DM71VA)

(with heat insulator)

Indoor coil

thermistor

RT12

Indoor coil

thermistor

RT13

OBH780

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