Mitsubishi Electric MSZ-SF15VA - E1 Manuel utilisateur

CONTENTS

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

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

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

4. NOISE CRITERIA CURVES······························ 5

5. OUTLINES AND DIMENSIONS ························ 6

6. WIRING DIAGRAM············································ 7

7. REFRIGERANT SYSTEM DIAGRAM··············· 8

8. SERVICE FUNCTIONS ····································· 9

9. MICROPROCESSOR CONTROL ····················11

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

11. DISASSEMBLY INSTRUCTIONS···················· 29

SPLIT-TYPE AIR CONDITIONERS

Outdoor unit service manual

MXZ-B·VA Series (OBH554)

MXZ-8A140A (OC316)

SERVICE MANUAL No. OBH555

INDOOR UNIT

PARTS CATALOG (OBB555)

NOTE:

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

Models

MSZ-SF15VA - E1

MSZ-SF20VA - E1

MSZ-SF15VA - E1

MSZ-SF20VA - E1

MSZ-SF15VA - E1

MSZ-SF20VA - E1

1. New model

TECHNICAL CHANGES

ACCESSORIES

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 (Used for left or left-rear piping) 1

MSZ-SF15VA MSZ-SF20VA

PART NAMES AND FUNCTIONS

Front panel

Air ﬁlter

Air inlet

Horizontal vane

Air outlet

Heat exchanger

Operation

Remote control

indicator lamp

receiving section

Emergency operation switch (E.O. SW)

Remote controller

Indoor model MSZ-SF15VA MSZ-SF20VA

Power supply Single phase 230 V, 50 Hz

Electrical

data

Power

input 1

Cooling W17 19

Heating 17 19

Running

current 1

Cooling A0.17 0.19

Heating 0.17 0.19

Fan

motor

Model RC0J40-FM

Current

Cooling A0.17 0.19

Heating 0.17 0.19

Dimensions W × H × D mm 760 × 250 × 168

Weight kg 7.7

Special remarks

Air direction 5

Airﬂow

Cooling

Super High

m3/h

384 414

High 330

Med. 276

Low 234

Silent 210

Heating

Super High

m3/h

408 438

High 360

Med. 300

Low 264

Silent 222

Sound level

Cooling

Super High

dB(A)

40 42

High 35

Med. 30

Low 26

Silent 21

Heating

Super High

dB(A)

40 42

High 35

Med. 30

Low 26

Silent 21

Fan speed

Cooling

Super High

rpm

1,500 1,600

High 1,300

Med. 1,130

Low 980

Silent 900

Heating

Super High

rpm

1,500 1,600

High 1,350

Med. 1,160

Low 1,030

Silent 910

Fan speed regulator 5

Remote controller model SG10D

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.

2 For multi system.

Specifications and rating conditions of main electric parts

Fuse (F11) T3.15AL250V

Horizontal vane motor (MV) 12 VDC

Varistor (NR11) S10K300E2K1

Terminal block (TB) 3P

SPECIFICATION

MSZ-SF15VA

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-SF20VA

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

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

Unit: mm

MSZ-SF15VA MSZ-SF20VA

OUTLINES AND DIMENSIONS

1120 Oblong hole

Installation plate

1120 Oblong hole

Indoor unit

Wall hole 65

61 295 155 78

45 335 300

145 145 81

208

166

167

187

209

21.5

760

740 10

5 168

45 56 505 179

202

250

110

Installation plate

Piping

Drain hose

Air out

193

56 56

Piping

Insulation

Liquid line

Gas line

Drain hose

35 O.D

6.35-0.39m (Flared connection 6.35)

ØØ

9.52-0.34m (Flared connection 9.52)

ØØ

Insulation 28 Connected part 16 O.D

ØØ

MSZ-SF15VA MSZ-SF20VA

WIRING DIAGRAM

Indoor

heat

exchanger

Flared connection

Room temperature

thermistor

RT11

Flared connection

Refrigerant pipe ø9.52

(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

MSZ-SF15VA MSZ-SF20VA

REFRIGERANT SYSTEM DIAGRAM

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.

MSZ-SF15VA MSZ-SF20VA

SERVICE FUNCTIONS

J1 J2

8-3. AUTO RESTART FUNCTION

When the indoor unit is controlled with the remote controller, the operation mode, the set temperature, and the fan speed

are memorized by the indoor electronic control P.C. board. “AUTO RESTART FUNCTION” automatically starts operation

in the same mode just before the shutoff of the main power.

Operation

If the main power has been cut, the operation settings remain.

After the power is restored, the unit restarts automatically according to the memory.

(However, it takes at least 3 minutes for the compressor to start running.)

How to release “AUTO RESTART FUNCTION”

Turn off the main power for the unit.

Solder the jumper wire to JR07 on the indoor electronic control P.C. board. (Refer to 10-7.)

NOTE:

• The operation settings are memorized when 10 seconds have passed after the indoor unit was operated with the remote

controller.

• If main power is turned OFF or a power failure occurs while AUTO START/STOP timer is active, the timer setting is can-

celled.

• If the unit has been off with the remote controller before power failure, the auto restart function does not work as the

power button of the remote controller is OFF.

• To prevent breaker OFF due to the rush of starting current, systematize other home appliance not to turn ON at the same

time.

• When some air conditioners are connected to the same supply system, if they are operated before power failure, the

starting current of all the compressors may flow simultaneously at restart.

Therefore, the special counter-measures are required to prevent the main voltage-drop or the rush of the starting current

by adding to the system that allows the units to start one by one.

CN112

R111

Indoor electronic

control P.C. board

JR07

IC112

CN151

CN111

CN211

Ce manuel convient aux modèles suivants

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