Mitsubishi MSX-05NV- E2, MSX-05NV II- E1, MSX-09NV- E2, MSX-09NV II- E1, MSX-12NV- E2 Service Manual

SPLIT-TYPE AIR CONDITIONERS

SERVICE MANUAL

Wireless type
Models

MSX-05NV-

(WH) ●

MUX-10NV-

No. OB221

E1E2

MSX-09NV­MSX-12NV­MSX-05NV
MSX-09NV
MSX-12NV

(WH) ●

(WH) ●

22

-

22

-

22

-

MUX-18NV­MUX-24NV-

(WH) ●

(WH) ●

(WH) ●

CONTENTS

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

2. OUTLINES AND DIMENSIONS·························2

3. SERVICE FUNCTIONS ······································3

4. PARTS LIST ·······················································4

MUX-10NV­MUX-18NV­MUX-24NV-

E1E2

E1E2

E1E1

E1E1

E1E1

NOTE:This Service Manual covers only change points.

(MSX-05/09/12NV- ➔ MSX-05/09/12NV- )
(MSX-05/09/12NV- ➔ MSX-05/09/12NV2-)
Please refer to the Service Manual OB183 SECOND

EDITION for unchanged contents.
Please refer to the Service Manual OB183 SECOND
EDITION for MUX-10/18/24NV- .

E1

E2E1

E1E2

314.5323

2.5

186

191

223

266.5

46

41

225

84.5
9

133.5

84.5

225

93

183

13062560

275

815

17.5

783

72

7 or more

100

90

5

160

56

Liquid line {6.35-0.5m
Gas line {9.52-0.43m
Insulation {35 O.D

{19 I.D

Wireless remote controller

Power supply cord
Lead to right 1.0m
Lead to left 0.3m

Installation plate

Indoor unit

Wall hole {65

Installation plate

Drain hose {16
Insulation {28

Air out

{

Air in

1

TECHNICAL CHANGES

MSX-10NV- ➔ MSX-10NV-

MSX-18NV- ➔ MSX-18NV­MSX-24NV- ➔ MSX-24NV-

1. Auto restart function has added.

2. INDOOR ELECTRONIC CONTROL P.C. BOARD has changed.

MSX-10NV- ➔ MSX-10NV22­MSX-18NV- ➔ MSX-18NV22­MSX-24NV- ➔ MSX-24NV22-

1. Indoor unit design has changed.

E2E1

E2E1

E2E1

E1E2

E1E2

E1E2

2

OUTLINES AND DIMENSIONS

INDOOR UNIT

MSX-05NV22- , MSX-09NV22­MSX-12NV22-

E1

E1E1

Unit : mm

2

3

C11

52C

CN201

CN112

CN121SW

CN111

IC101

CN211

CN151

JR07

SERVICE FUNCTIONS

1. AUTO RESTART FUNCTION

When the indoor unit is controlled with the remote controller, the operation mode, set temperature, and the fan speed are
memorized by the indoor electronic control P.C.board. The “AUTO RESTART FUNCTION” sets to work the moment power
has restored after power failure.Then, the unit will restart automatically. However if the unit is operated in “I FEEL
CONTROL.” mode before power failure, the operation is not memorized. In “I FEEL CONTROL.” mode, the operation is
decided by the initial room temperature.

How to set “AUTO RESTART FUNCTION”

1Turn off the main power for the unit.
2Removed the electronic control P.C. board and the display P.C.board. (See page 39.)
3Cut the RESISTOR JR07 on the indoor electronic control P.C.board.

Operation

1If the main power (220-240V AC) has been cut, the operation settings remain.
2After 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.)

Note:

•The operation settings are memorized when 10 seconds have passed after the remote controller was operated.

•If main power is cut while AUTO START/STOP timer is active ,the timer setting is cancelled when auto restart function

works.

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

power button of the remote controller is off.

•To prevent breaker off due to the rush of startting current, systematize other home appliance not to turn on at the same

time.

•When more than one air conditioners are connected under the same power system,compressor starting current as large

as that for all the compressors used flows at a time as soon as the units restart automatically.

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

power failure by providing the system to allow the units to start in regular succession.

3