Mitsubishi Electric MS-GH13VA Manuale utente

Models

MS-GH13VA -KU1 ,KU2 ,KU2 U

MS-GH18VA -KU1 ,KU2 ,KU2 U

MS-GH24VA -KU1

MS-GH30VA -KU1

CONTENTS

1. TECHNICAL CHANGES ······························2

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

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

4. OUTLINES AND DIMENSIONS·····················6

5. WIRING DIAGRAM·····································7

6. REFRIGERANT SYSTEM DIAGRAM ·············9

7. SERVICE FUNCTIONS······························ 10

8. MICROPROCESSOR CONTROL ················ 12

9. TROUBLESHOOTING······························· 19

10. DISASSEMBLY INSTRUCTIONS················· 33

Outdoor unit service manual

MU-GH∙VA Series (OBH665)

INDOOR UNIT

PARTS CATALOG (OBB664)

NOTE:

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

SERVICE MANUAL

No. OBH664

REVISED EDITION-B

OBH664 REVISED EDITION-A is void.

Revision B:

•MS-GH13/18VA- KU2 Uhave been

added.

MS-GH13VA - KU1

MS-GH18VA - KU1

MS-GH24VA - KU1

MS-GH30VA - KU1

1. New model

MS-GH13VA- KU1 MS-GH13VA- KU2

MS-GH18VA- KU1 MS-GH18VA- KU2

1. The model name has been changed so as to correspond to standard.

2. Remote controller has been changed.

MS-GH13VA- KU2 MS-GH13VA- KU2 U

MS-GH18VA- KU2 MS-GH18VA- KU2 U

1. The model name has been changed so as to correspond to standard.

2. Remote controller has been changed. (The setting temperature range has been changed.)

TECHNICAL CHANGES

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:

•MS-GH13/18VA- KU2 have been added.

Revision B:

•MS-GH13/18VA- KU2 Uhave been added.

OBH664B

ACCESSORIES

PART NAMES AND FUNCTIONS

Model MS-GH13VA

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

MS-GH13VA

Air ﬁlter

(Nano platinum ﬁlter)

Front panel

Air cleaning ﬁlter

(Electrostatic anti-allergy

enzyme ﬁlter, option)

Operation indicator lamp

Remote control receiving section

Emergency operation switch (E.O. SW)

Horizontal vane

Air outlet Heat exchanger

Display section

Air inlet

Remote controller

OBH664B

ACCESSORIES

MS-GH18VA MS-GH24VA MS-GH30VA

Horizontal vane

Air outlet

Air ﬁlter

(Nano platinum ﬁlter)

Air inlet

Front panel

Air cleaning ﬁlter

(Electrostatic anti-allergy

enzyme ﬁlter, option)

Remote controller

Display section

Heat exchanger

Operation indicator lamp

Remote control receiving section

Emergency operation switch

(E.O.SW)

Model MS-GH18VA

MS-GH24VA

MS-GH30VA

Installation plate 1

Installation plate ﬁxing screw 4 × 25 mm 7

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

OBH664B

SPECIFICATION

Indoor model MS-GH13VA MS-GH18VA MS-GH24VA MS-GH30VA

Function Cooling

Power supply Single phase 220 - 230 - 240 V, 50 Hz

Electrical

data

Running current A 0.22 0.30 0.42

Power input W 43 39 51

Fan

motor

Model RC4V18-FA RC0J56-AF

Current A 0.22 0.30 0.42

Dimensions W × H × D mm 798 x 295 x 232 1,100 x 325 x 238

Weight kg 916

Special remarks

Air direction 5

Airﬂow

Super High (POWERFUL)

m3/h

624 1,086 1,086 1,206

High 558 870 990 1,122

Med. 396 762 834 1,014

Low 288 642 714 882

Sound level

Super High (POWERFUL)

dB (A)

44 45 48 50

High 40 42 45 47

Med. 33 38 41 43

Low 26 34 37 39

Fan speed

Super High (POWERFUL)

rpm

1,100 1,100 1,100 1,200

High 1,000 920 1,020 1,130

Med. 770 800 890 1,040

Low 610 720 790 930

Fan speed regulator 4

Remote controller model

KU1 : KM12A KU1 : KM12B

KM12B

KU2 : KM15D KU2 : KM16A

KU2 U: KM17A KU2 U: KM17C

NOTE: Test conditions are based on ISO 5151.

Cooling: Indoor Dry-bulb temperature 27 Wet-bulb temperature 19

Outdoor Dry-bulb temperature 35 Wet-bulb temperature 24

Indoor-Outdoor piping length: 5 m

OBH664B

Unit: mm

OUTLINES AND DIMENSIONS

211.5

231.5

253

21.5

155 155

80 225 225

5232

798

785 6.5

130619

295

100

107

112

33861

212.5

254

315 84

11×26 Oblong hole 11×20 Oblong hole

Installation plate

Indoor unit

Wall hole ø65

Air in

Air out

Installation plate

Piping

Drain hose

159

MS-GH13VA

Piping

Insulation ø35 O.D

Liquid line ø7 - 0.5 m (Flared connection ø6.35)

Gas line ø9.52 - 0.43 m (Flared connection: ø9.52)

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

Unit: mm

1090 5

1100

45 238.5

258.5

280

225 225

129

239.5

281

49.5 500.5 439.5

199.5199.5 110.5

63 76 843 181

65 30

325

100

125

160

110

(

70°

)

238

210

21.5

184

Piping

Insulation

50 O.D

Liquid line

9.52 - 0.5m (Flared connection

6.35)

Gas line

12 - 0.43m (Flared connection

15.88)

Drain hose Inslation

28 Connected part

16 O.D

Piping

Insulation

50 O.D

Liquid line

9.52 - 0.5m (Flared connection

6.35)

Gas line

12 - 0.45m (Flared connection

12.7)

Drain hose Inslation

28 Connected part

16 O.D

Air out

Piping

Drain hose

11×26 Oblong hole 11×20 Oblong hole

Installation plate

Indoor unit

Wall hole

Air in Installation plate

MS-GH18VA

MS-GH24VA

159

Piping

Insulation

50 O.D

Liquid line

9.52 - 0.5m (Flared connection

9.52)

Gas line

12 - 0.43m (Flared connection

15.88)

Drain hose Inslation

28 Connected part

16 O.D

MS-GH30VA

MS-GH18VA MS-GH24VA MS-GH30VA

OBH664B

WIRING DIAGRAM

MS-GH13VA- KU1

MS-GH13VA- KU2 ,KU2 U

OBH664B

MS-GH18VA- KU1 MS-GH24VA MS-GH30VA

MS-GH18VA- KU2 ,KU2 U

OBH664B

Unit: mm

REFRIGERANT SYSTEM DIAGRAM

MS-GH13VA

Indoor

heat

exchanger

Flared connection

Room temperature

thermistor

RT11

Flared connection

Refrigerant pipe 6.35

(with heat insulator)

Indoor coil

thermistor

RT12

Refrigerant flow in cooling

Refrigerant pipe 9.52

(with heat insulator)

Indoor

heat

exchanger

Flared connection

Room temperature

thermistor

RT11

Flared connection

Refrigerant pipe ø12.7 (MS-GH18VA)

ø15.88 (MS-GH24/30VA)

(with heat insulator)

Refrigerant pipe ø6.35 (MS-GH18/24VA)

ø9.52 (MS-GH30VA)

(with heat insulator)

Indoor coil

thermistor

RT12

Refrigerant flow in cooling

MS-GH18VA MS-GH24VA MS-GH30VA

OBH664B

7-1. TIMER SHORT MODE

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

(Refer to 9-7.)

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

shortened by bridging JPG and JPS.)

7-2. 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:

NOTE: For modification, take out the

batteries and press the

OPERATE/STOP (ON/OFF)

(MS-GH13/18/24/30VA- KU1 )/

STOP/OPERATE (OFF/ON)

(MS-GH13/18VA- KU2 ,KU2

U)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 been restored.

SERVICE FUNCTIONS

MS-GH13VA MS-GH18VA MS-GH24VA MS-GH30VA

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.

OBH664B

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