Mitsubishi MS-18NV- E4, MU-18NV- E4 Service Manual

SPLIT-TYPE AIR CONDITIONERS

SERVICE MANUAL

Wireless type
Models

No. OB228

MS-18NV -

MS-18NV -

E4

(WH)

· MU-18NV -

CONTENTS

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

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

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

4. OUTLINES AND DIMENSIONS·························5

5. WIRING DIAGRAM ············································6

6. REFRIGERANT SYSTEM DIAGRAM················7

7. PERFORMANCE CURVES································8

8. MICROPROCESSOR CONTROL ····················10

9. SERVICE FUNCTIONS ····································16

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

11. DISASSEMBLY INSTRUCTIONS·····················24

12. PARTS LIST······················································28

13. OPTIONAL PARTS ···········································31

E4E4

1

TECHNICAL CHANGES

MS-18NV - ➔MS-18NV -

1. Indoor electronic control P.C. board has changed.

MU-18NV - ➔MU-18NV -

1. Compressor has changed.(NH-33VMDT➔PH-33VPET)

2. Outdoor heat exchanger has changed.

3. Refrigerant filling capacity(R-22) has changed.(1.65kg➔1.05kg)

2

PART NAMES AND FUNCTIONS

E4E3

E4E3

INDOOR UNIT

MS-18NV -

E4

Air cleaning filter(option)

Grille

Deodorizing filter(option)

(When the grille is open)

Remote control
receiving section

2

TEMPERATURE buttons

Signal transmitting section

Operation display section

OPERATE /STOP

(ON /OFF)button

OPERATION SELECT button

FAN SPEED CONTROL button

SLEEP button

ON-TIMER button

CLOCK SET button

HR. button

MIN. button

(TIME SET button)

VANE CONTROL button

OFF-TIMER button

RESET button

SWING buttons

OUTDOOR UNIT
MU-18NV -

E4

REMOTE CONTROLLER

MS-18NV -

E4

3

3

Capacity

Electrical data

Compressor

Indoor

fan motor

Outdoor

fan motor

Dimensions

Weight

Special remarks

Model

Function

Power supply

Coefficient of performance(C.O.P)

Capacity
Dehumidification
Air flow(Hi)
Power outlet
Running current
Power input
Auxiliary heater
Power factor
Starting current
Compressor motor current
Fan motor current

Model
Output
Winding resistance(at20:)
Model
Winding resistance(at20:)
Model
Winding resistance(at20:)

Indoor unit

Outdoor unit

Indoor unit
Outdoor unit
Air direction
Sound level
(Hi)
Fan speed
(Hi)
Fan speed
regulator
Refrigerant filling capacity(R-22)
Refrigerating oil (Model)

Thermistor

Width
Height
Depth
Width
Height
Depth

Indoor unit
Outdoor unit
Indoor unit
Outdoor unit
Indoor unit
Outdoor unit

RT11(at25:)
RT12(at25:)

kW

R/h

K /h

A
A

W

A(kW)

%

A
A
A

W

"

"



"

mm
mm
mm
mm
mm
mm

kg
kg

dB

dB
rpm
rpm

kg

cc
k"
k"

MS-18NV -

E4

Single phase, 220-240V, 50Hz

—

WHT-BLK183.8 BLK-RED250.5

1,015

320
190
850
605
290

14

5

4

10
10

Cooling

5.1

2.5

INDOOR 756 / OUTDOOR 2340-2400

15

9.1

1,910-2,010

95-92
51-55

8.46

INDOOR 0.25 / OUTDOOR 0.39

2.67-2.54

PH-33VPET

1,500

C-R1.08

C-S 2.18

RA4V27-EA or EF

RA6V50-OF or OG

WHT-BLK116.4 BLK-RED111

48

42
52

1,180

830-860

1

1.05

900 (MS32N1)

SPECIFICATION

NOTE:Test conditions

Cooling : Indoor DB27: / WB19:

Outdoor DB35: / WB24:

4

4

3 297

450
450

352438

254

20

60

40

150 648 217

5190

995

19077550

320

1015

17.5

160

56

4holes 11o20

Indoor unit

Installation plate

Wireless remote controller

Power supply cord
Lead to right 2m
Lead to left 1m

Wall hole [75

Installation plate

Liquid line [8-0.5m
Gas line [12-0.43m
Insulation [50 O.D

[28 I.D

Insulation [28

Drain hose [16

Air out

{

Air in

If the right/left sides or
back side is vacant,the
front has only to be 50cm
unobstructed.

If the front or right/left sides
are vacant, the top has only
to be 10cm unobstructed.

OUTLINES AND DIMENSIONS

MS-18NV -

E4

INDOOR UNIT

Unit : mm

MU-18NV -

E4

OUTDOOR UNIT

5

5

SYMBOL

RT12

TB

52C

SYMBOL

IC141

MF
MV

NR11

RT11

SYMBOL

C11

DSAR

F11
F12

HIC1

NAME

NAME NAME
INDOOR FAN CAPACITOR
SURGE ABSORBER
FUSE(3.15A)
THERMAL FUSE(93¡C)
DC / DC CONVERTER

HYBRID IC
INDOOR FAN MOTOR
VANE MOTOR
VARISTOR
ROOM TEMPERATURE THERMIST OR

INDOOR COIL THERMISTOR
TERMINAL BLOCK
CONTACTOR

WIRING DIAGRAM

MS-18NV -

E4

INDOOR UNIT

O OUTDOOR

T
UNIT
CONNECTING

220-240V~

POWER
SUPPLY
CORD
~/N 220-240V
50Hz

CIRCUITBREAKER

MODEL WIRING DIAGRAM

TB

L

GRN/YLW

w

BRN

w

2

N

BLU

BRN

F12

BLU

WHT

w

BLU

w

BRN

DSAR

RECEIVER
P.C.BOARD

BLU

CN
101

GRN/YLW

REMOTE
CONTROLLER

2
1

LD1

33

BLU

CN

102

DISPLAY
P.C.BOARD

HIC1

w

4

CN201

3
1

CN

151

ELECTRONIC CONTROL P.C BOARD

5

MV

52C

w

3

TRANS

F11

IC141

NR11

CN
112

3

CN

121

CN211

4

C11

2
1

CN
111

RT12

BRN
YLW
GRY
WHT
RED
BLK

RT11

MF

NOTE:1. For the outdoor electric wiring refer to the outdoor unit electric wiring diagram for servicing.

2. Use copper conductors only.(For field wiring)

3. Symbols below indicate.
: Terminal block, : Connector

MU-18NV -

OUTDOOR UNIT

SYMBOL

C1
C2

E4

MODEL WIRING DIAGRAM

220-240V~

FROM
INDOOR UNIT
CONNECTING

GRN/YLW

NAME
COMPRESSOR CAPACITOR
OUTDOOR FAN CAPACITOR

TB

2

N

w

w

SYMBOL

F

MC

WHT

F

C2

NAME NAME
FUSE(2A)
COMPRESSOR(INNER THERMOSTAT)

BLU

RED
ORN
WHT
BLU

WHT

1
2
3
4

RED
ORN
WHT
BLK

SYMBOL

MF

TB

C

C1

RED

BLK

MC

S

R

MF

OUTDOOR FAN MOTOR(INNER THEMOSTAT)
TERMINAL BLOCK

NOTE:1. Use copper conductors only.(For field wiring)

2. “w”show the terminals with a lock mechanism, so they cannot be removed when you pull
the lead wire.
Be sure to pull the wire by pushing the locking lever(projected part) of the terminal with a finger.

3. Symbols below indicate.

: Terminal block, : Connector

6

1.Slide the sleeve.

2.Pull the wire while
pushing the locking
lever.

6

Indoor
unit

w Max. Height
difference 5m

wHeight difference should be within 5m regardless of which unit,
indoor or outdoor position is high.

Outdoor unit

Refrigerant Piping

Max.length

A

Model

Outdoor unit precharged

1050

Refrigerant piping length (one way)

15m

120

7m

0

10m

45

MS-18NV - E4

Model

Refrigerant piping

Max. length : m

A

Piping size O.D : mm

Length of connecting pipe : m

Indoor unit

Gas 0.43

Liquid 0.5

Gas

15.88

Liquid

6.35

Outdoor unit

Gas 0

Liquid 0

MS-18NV -

E4

15

REFRIGERANT SYSTEM DIAGRAM

MS-18NV -

E4

INDOOR UNIT

Indoor
heat
exchanger

Distributor

Room temperature
thermistor
RT11

Refrigerant pipe [15.88
(Option)
(with heat insulator)

Indoor coil
thermistor

RT12

Stop valve
(with service port)

Flared
connection

Stop valve

Refrigerant pipe [6.35
(Option)

(with heat insulator)

Accumulator

Capillary tube
[3.0X[2.0X700

Compressor

Refrigerant flow in cooling

MU-18NV -

OUTDOOR UNIT

Outdoor
heat

Strainer

exchanger

Unit:mm

E4

MAX. REFRIGERANT PIPING LENGTH

MAX. HEIGHT DIFFERENCE

ADDITIONAL REFRIGERANT CHARGE(R-22 : g)

7

Calculation : Xg=15g/mO(A-7)m

Wet and dry-bulb
thermometers

Dry-bulb
thermometers

7

PERFORMANCE CURVES

MS-18NV -

The standard data contained in these specifications apply only to the operation of the air conditioner under normal conditions.
Since operating conditions vary according to the areas where these units are installed. The following information has been
provided to clarify the operating characteristics of the air conditioner under the conditions indicated by the performance curve.

(1) GUARANTEED VOLTAGE

Rated voltage : ±10% (198 ~ 264V

(2) AIR FLOW

Air flow should be set at MAX.

(3) MAIN READINGS

(1) Indoor intake air wet-bulb temperature :°CWB
(2) Indoor outlet air wet-bulb temperature :°CWB
(3) Outdoor intake air dry-bulb temperature :°CDB
(4) Total input :W

Indoor air wet-bulb temperature difference on the left side of the chart on next page shows the difference between the
indoor intake air wet-bulb temperature and the indoor outlet air wet-bulb temperature for your reference at service.

How to measure the indoor air wet-bulb temperature difference

1. Attach at least 2 sets of wet-and dry-bulb thermometers to the indoor air intake as shown in the figure, and at least 2 sets
of wet-and dry-bulb thermometers to the indoor air outlet. The thermometers must be attached to the position where air
speed is high.

2. Attach at least 2 sets of dry-bulb thermometers to the outdoor air inlet.
Cover the thermometers to prevent direct rays of the sun.

3. Check that the air filter is cleaned.

4. Open windows and doors of room.

5. Press the EMERGENCY OPERATION switch to start the EMERGENCY operation.

6. When system stabilizes after more than 15 minutes, measure temperature and take an average temperature.

7. 10 minutes later, measure temperature again and check that the temperature does not change.

E4

),50Hz

Cooling

}

INDOOR UNIT

OUTDOOR UNIT

8

MS-18NV - E4

15 20

50

25
60

30
70(%)

35(:)

0.3

0.4

0.5

0.6

0.7

7

6

5

4

3

18 32

220V/240V

15 20

50

25
60

30
70(%)

35(:)

6

7

8

9

10

11

220V/240V

18

32

OUTDOOR LOW PRESSURE AND OUTDOOR UNIT CURRENT
COOL operation

11

Both indoor and outdoor unit are under the same temperature/humidity condition.

Dry-bulb temperature

20
25

Relative humidity(%)

50
60

30 70

22

Air flow should be set at MAX.

33

The unit of pressure has been changed to MPa on the international system of units(SI unit system).

The conversion factor is : 1(MPa • G) =10.2(kgf/ff• G)

(kgf/F•G)(MPa•G)

MU-18NV -

Outdoor low pressure

E4

MU-18NV -

Outdoor unit current(A)

E4

Ambient temperature(˚C)Ambient humidity(%)

Ambient temperature(˚C)Ambient humidity(%)

9

8

lighting
not lighting

About 2 : 
or more

Difference
betweeen set
temperature
and room
temperature

About 2 : 
or less

This shows that the
air conditioner is
operating to reach
the target temperature.
Please wait unitil the
target temperature is
obtained.

This shows that the
room temperature is
approaching the
target temperature.

Operation state

Indication

Operation Indicator

Operation Indicator lamp

The operation indicator at the right side of the indoor
unit indicates the operation state.

INDOOR UNIT DISPLAY SECTION

MICROPROCESSOR CONTROL

WIRELESS REMOTE CONTROLLER

Signal transmitting section

Operation display section

OPERATE /STOP
(ON /OFF)button

OPERATION SELECT button

FAN SPEED CONTROL button

SLEEP button

ON-TIMER button

CLOCK SET button

HR. button

MIN. button

(TIME SET button)

TEMPERATURE buttons

VANE CONTROL button

SWING buttons

OFF-TIMER button

RESET button

MS-18NV -

E4

Once the operation mode are set, the same operation mode
can be repeated by simply turning the
OPERATE/STOP(ON/OFF) button ON.
Indoor unit receives the signal with a beep tone.
When the system turns off, 3-minute time delay will operate to
protect system from overload and compressor will not restart
for 3 minutes.

8-1. “I FEEL CONTROL” ( ) OPERATION

(1) Press OPERATE/STOP(ON/OFF) button on the remote

controller. Operation Indicator lamp of the indoor unit
turns on with a beep tone.

(2) Select “I FEEL CONTROL”( ) mode with the

OPERATION SELECT button.

(3) The operation mode is determined by the room

temperature at start-up of the operation.

Initial room temperature

25: or more
more than 13:,

less than 25:

● Once the mode is fixed, the mode does not change by
room temperature afterwards.

● Under the ON-TIMER ( ) operation, the mode is
determined according to the room temperature as the
operation starts.

● When the system is stopped with the
OPERATE/STOP(ON/OFF) button on the remote
controller, and restarted within 2 hours in “I FEEL
CONTROL” ( ) mode, the system operates in previous
mode automatically regardless of the room temperature.

mode

COOL mode of

“I FEEL CONTROL“

DRY mode of

“I FEEL CONTROL”

Example

Previous operation

COOL mode of
“I FEEL CONTROL” or
COOL mode

When the system is restarted after 2 hours and more,
the operation mode is determined by the room
temperature at start-up of the operation.

Example

Previous operation

COOL mode of
“I FEEL CONTROL”
or COOL mode

10

Restart

COOL mode of
“I FEEL CONTROL”

Restart

COOL or DRY mode of
“I FEEL CONTROL” that
determined by room
temperature at start-up
of the operation.

(4) The initial set temperature is decided by the initial room temperature.

Mode

COOL mode of

"I FEEL CONTROL"

Initial room temperature Initial set temperature

26: or more

25: to 26:

Initial room temperature

24:

minus 2:

DRY mode of

"I FEEL CONTROL"

more than13:, less than 25:

Initial room temperature
minus 2:

w 1 When the system is restarted with the remote controller, the system operates with the previous set temperature

regardless of the room temperature at restart.
The set temperature is calculated by the previous set temperature.

(5) TEMPERATURES buttons

In “I FEEL CONTROL” ( ) mode, set temperature is decided by the microprocessor based on the room temperature.

In addition, set temperature can be controlled by TOO WARM or TOO COOL buttons when you feel too cool or too warm.
Each time the TOO WARM or TOO COOL button is pressed, the indoor unit receives the signal and emits a beep tone.

● Fuzzy control

When the TOO COOL or TOO WARM button is pressed, the microprocessor changes the set temperature, considering
the room temperature, the frequency of pressing TOO COOL or TOO WARM button and the user’s preference to heat or
cool. So this is called “Fuzzy control”, and works only in “I FEEL CONTROL” mode.
In DRY mode of “I FEEL CONTROL”, the set temperature doesn’t change.

▲ TOO
COOL… To raise the set temperature 1~2 degrees(°C)

w1

▼ TOO
WARM … To lower the set temperature 1~2 degrees(°C)

— COOL mode of “I FEEL CONTROL” —

1. Indoor fan speed control

Indoor fan operates at the set speed by FAN SPEED CONTROL button.
In Auto the fan speed is as follows.

Initial temperature difference

Fan speed

Room temperature minus set temperature : 2 degrees or more········································Hi
Room temperature minus set temperature : Between 1 and 2 degrees····························Me
Room temperature minus set temperature : less than 1 degree·······································Lo

2. Coil frost prevention

1 Temperature control

When the indoor coil thermistor RT12 reads -1°C or below, the coil frost prevention mode starts immediately.
However, the coil frost prevention doesn’t work after 5 minutes since the compressor has started.
Indoor fan operates at the set speed and the compressor stops for 5 minutes.
After that, if RT12still reads below -1°C this mode is prolonged until the RT12 reads over -1°C.

2 Time control

When the three conditions as follows have been satisfied for 1 hour and 45 minutes, compressor stops for 3 minutes.
a. Compressor has been continuously operating.
b. Indoor fan speed is Lo or Me.
c. Room temperature is below 26°C.
When compressor stops, the accumulated time is cancelled and when compressor restarts, time counting starts
from the beginning.
Time counting also stops temporarily when the indoor fan speed becomes Hi or the room temperature exceeds
26°C. However, when two of the above conditions (b.and c.) are satisfied again.Time accumulation is resumed.

Difference between room
temperature and set
temperature during

2 deg.

1.7 deg.

1 deg.

4 deg.

11

Operation chart

Example

ON

ON

Compressor
Outdoor fan

Indoor fan

—DRY mode of “I FEEL CONTROL”—

The system for dry operation uses the same refrigerant circuit as the cooling circuit.
The compressor and the indoor fan are controlled by the room temperature.
By such controls, indoor flow amounts will be reduced in order to lower humidity without much room temperature
decrease.

1. Indoor fan speed control

Indoor fan operates at the set speed by FAN SPEED CONTROL button.
However, in AUTO fan operation, fan speed becomes Lo.

2. The operation of the compressor and indoor fan/ outdoor fan

Compressor operates by room temperature control and time control.
Set temperature is controlled to fall 2°C from initial room temperature.

Indoor fan and outdoor fan operate in the same cycle as the compressor.

• When the room temperature is 23°C or over:
When the thermostat is ON, the compressor repeats 8 minutes ON and 3 minutes OFF.

When the thermostat is OFF, the compressor repeats 4 minutes OFF and 1 minute ON.

• When the room temperature is under 23°C.
When the thermostat is ON, the compressor repeats 2 minutes ON and 3 minutes OFF.
When the thermostat is OFF, the compressor repeats 4 minutes OFF and 1 minute ON.

OFF

(continuously at set speed)

ON

OFF

Operation time chart

Example

Thermostat

Indoor fan

Outdoor fan
compressor

3. Coil frost prevention

• The operation is as same as coil frost prevention during COOL mode of “I FEEL CONTROL”.

• Indoor fan operates at the set speed and the compressor stops for 5minutes, because protection (Coil frost prevention)has
the priority. However when coil frost prevention works while the compressor is not operating, it’s speed becomes Lo.

ON

ON

8 min.

1st ON

OFF

OFF

ON

ON

3 min.

2nd ON

OFF

ON

OFF

ON

OFF

1 min.

12

8-2. COOL ( ) OPERATION

SLEEP

(1) Press OPERATE/STOP(ON/OFF) button.

Operation Indicator lamp of the indoor unit
turns on with a beep tone.

(2) Select COOL mode with the OPERATION

SELECT button.

(3) Press the TEMPERATURES button.

(TOO WARM or TOO COOL button) to select
the desired temperature.
The setting range is 16 ~ 31°C.
w Indoor fan continues to operate regardless

of thermostat’s OFF-ON at set speed.

w Coil frost prevention is as same as COOL

mode of “I FEEL CONTROL”.

8-3. DRY ( ) OPERATION

(1) Press OPERATE/STOP(ON/OFF) button.

Operation Indicator lamp of the indoor unit
turns on with a beep tone.

(2) Select DRY mode with the OPERATION

SELECT button.

(3) The microprocessor reads the room

temperature and determines the set
temperature. Set temperature is as shown on
the right chart.
Thermostat (SET TEMP.)does not work.
The other operations are same as DRY

mode of “I FEEL CONTROL”.
(4) DRY operation will not function when the room temperature is 13°C or below.
(5) When DRY operation functions, the fan speed is lower than cool operation.

8-4.FAN( d )OPERATION

(1) Press OPERATE/STOP(ON/OFF) button.
(2) Select FAN mode with the OPERATION SELECT button.
(3) Select the desired fan speed.When AUTO, it becomes Lo.

Only indoor fan operates.Outdoor unit does not operate.

8-5. FAN MOTOR CONTROL

(1) Rotational frequency feedback control

The indoor fan motor is equipped with a rotational frequency sensor, and outputs signal to the microprocessor to
feedback the rotational frequency. Comparing the current rotational frequency with the target rotational frequency
(Hi,Me,Lo,SLEEP), the microprocessor controls IC141 and adjusts fan motor electric current to make the current
rotational frequency close to the target rotational frequency. With this control, when the fan speed is switched, the
rotational frequency changes smoothly.

(2) Fan motor lock-up protection

When the rotational frequency feedback signal has not output for 12 seconds, (or when the microprocessor cannot

detect the signal for 12 seconds) the fan motor is regarded locked-up. Then the electric current to the fan motor is shut

off. 3 minutes later, the electric current is applied to the fan motor again. During the fan motor lock-up, the Operation

Indicator lamp flashes on and off to show the fan motor abnormality. (See page 19.)

8-6. AUTO VANE OPERATION

(1) Vane motor drive

These models are equipped with a stepping motor for the horizontal vane. The rotating direction, speed, and angle of

the motor are controlled by pulse signals (approx. 12V) transmitted from indoor microprocessor.

(2) The horizontal vane angle and mode changes as follows by pressing the VANE CONTROL ( ) button.

13

(3) Positioning

The vane is once pressed to the vane stopper below to confirm the standard position and then set to the desired angle.
Confirming of standard position is performed in case of follows.
(a) When the OPERATE/STOP(ON/OFF) button is pressed.
(b) When the vane control is changed from AUTO to MANUAL.
(c) When the SWING is finished.
(d) When the test run starts.
(e) When the power supply turns ON.

(4) VANE AUTO ( ) mode

In VANE AUTO mode, the microprocessor automatically determines the vane angle and operation to make the optimum
room-temperature distribution.

1 In COOL and DRY operation

Vane angle is fixed to Angle 1.

2 In FAN operation

Vane angle is fixed to Angle 4.

(5) Dew prevention

During COOL or DRY operation at Vane Angle 4 or 5 when the compressor cumulative operation time exceeds 1 hour,
the vane angle automatically changes to Angle 1 for dew prevention.

(6) SWING MODE ( )

By pressing the SWING button ( ),the horizontal vane swings vertically. The remote controller displays “ ”. SWING
mode is cancelled when the SWING button or VANE CONTROLbutton ( ) is pressed the mode is changed.

8-7. SLEEP MODE ()

• When the SLEEP button ( ) is pressed, the indoor fan speed drops and the air flow sound from the indoor unit is
decreased.

• The indications of the remote controller are “ ” and “ ”.

• When the FAN SPEED CONTROL button ( ) or the SLEEP button ( ) or mode change button is pressed during the
SLEEP mode, the SLEEP mode is released.

8-8. TIMER OPERATION

1. How to set the timer

(1) Press OPERATE/STOP(ON/OFF) button to start the air conditioner.
(2) Check that the current time is set correctly.
NOTE : Timer operation will not work without setting the current time. Initially “AM0:00” blinks at the current time display of

TIMER MONITOR, so set the current time correctly with CLOCK SET button.

(3) Press TIMER CONTROL button to select the operation.

“ ” button... AUTO START operation (ON timer)
“ ” button... AUTO STOP operation (OFF timer)

(4) Press HR. and MIN. button to set the timer. Time setting is 10-minute units.

HR. and MIN. button will work when “ ” or “ ” mark is flashing.
These marks disappear in 1 minute.
After setting the ON timer, check that Operation Indicator lamp of the indoor unit lights.

NOTE1 : Be sure to place the remote controller at the position where its signal can reach the air conditioner even during

TIMER operation, or the set time may deviate within the range of about 10 minutes.

NOTE2 : Reset the timer in the following cases, or the set time may deviate and other malfunctions may occur.

● A power failure occurs.

● The circuit breaker functions.

14

2. Cancel

EMERGENCY OPERATION switch

Timer setting can be cancelled with the TIMER CONTROL buttons. (“ ” or “ ”)
To cancel the ON timer, press the “ ” button.

To cancel the OFF timer, press the “ ” button.
Timer is cancelled and the display of set time disappears.

PROGRAM TIMER

● The OFF timer and ON timer can be used in combination.

● “ ”and “ ” display shows the order of the OFF timer and ON timer operation.

(Example 1) The current time is 8:00 PM.

The unit turns off at 11:00 PM, and on at 6:00 AM.

NOTE : TIMER setting will be cancelled by power failure or breaker functioning.

(Example 2) The current time is 11:00 AM.

The unit turns on at 5:00 PM, and off at 9:00 PM.

8-9. EMERGENCY-TEST OPERATION

When the remote controller is missing, has failed or when the batteries run down, press the EMERGENCY OPERATION
switch on the front of the indoor unit. The unit will start and the Operation Indicator lamp will light.
The first 30 minutes of operation is the test run operation. This operation is for servicing. The indoor fan speed runs at
high notch and the system is in continuous operation. (The thermostat is ON.)
After 30 minutes of test run operation the system shifts to EMERGENCY COOL MODE with a set temperature of 24°C.
The fan shifts to Me notch.
This operation continues until the EMERGENCY OPERATION switch is pressed again or the unit receives any signal
from the remote controller. In case of latter normal operation will start.
The coil frost prevention works even in this operation.
In the test run or Emergency operation, the horizontal vane operates in VANE AUTO mode.

NOTE : Do not press the EMERGENCY OPERATION switch during normal operation.

Press once <Cool>
Press again <Stop>

15

Operation Indicator lamp

9

No. 1 unit
No. 2 unit
No. 3 unit

No. 4 unit

1 unit operation
No modification

–
–

–

2 units operation

Same as at left

Cut J1

–

–

3 units operation

Same as at left
Same as at left

Cut J2

–

4 units operation

Same as at left
Same as at left
Same as at left

Cut both J1 and J2

SERVICE FUNCTIONS

MS-18NV -

E4

9-1. TIMER SHORT MODE

For service, set time can be shortened by short circuit of JPG and JPS on the electronics control P.C. board.
The time will be shortened as follows.
3-minutes delay : 3-minutes ➔ 3-seconds.
AUTO START : 1 hour ➔ 1-minute
AUTO STOP : 1 hour ➔ 1-minute

Short the connector during the timer mode.

}

9-2. 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 remodelling, take out

the batteries at first.
After finish remodelling, put
back the batteries then
push the RESET button.

The P.C.board has the print “J1” and “J2”. Jumper wires are mounted to each “J1” and “J2”. Cut J1 and J2 according
to the number of indoor unit as shown in Table 1..
After modification,push the reset button.

Table 1.

NOTE :

At power supply failure or installation, indoor unit deletes the memory about remote controller. When the power supply
is turned on and indoor unit receives the first signals from the remote controller, the remote controller number is
designated as the indoor unit number. Therefore at and after the second time indoor unit accepts the remote controller
of the initial setting number.
At setting-error, turn the power supply off to cancel the individual operation, and then turn the power supply on to
restart the setting.

16

9-3. AUTO RESTART FUNCTION

JR06

CN102

CN151

CN112 CN111CN121

CN101

BZ

SW

52C

IC101 RA102

IC141

CN211

C11CN201

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.
2Remove the electronic control P.C. board and the display P.C.board.(See page 24.)
3Cut the RESISTOR JR06 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 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

cancelled.

•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 appliances not to turn on at the same

time.

•When some 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 by
providing the system to allow the units to start in regular succession.

17

10 TROUBLESHOOTING

MS-18NV -

E4

10-1. Cautions on troubleshooting

1. Before troubleshooting, check the following:

1) Check the power supply voltage.

2) Check the indoor/outdoor connecting wire for mis-wiring.

2. Take care the following during servicing.

1) Before servicing the air conditioner, be sure to first turn off the remote controller to stop the unit, and then after
confirming the horizontal vane is closed, turn off the breaker and / or disconnect the power plug.

2) When removing the electronic control P.C. board, hold the edge of the board with care NOT to apply stress on the
components.

3) When connecting or disconnecting the connectors, hold the housing of the connector. DO NOT pull the lead wires.

3. Troubleshooting procedure

1) First, check if the OPERATION INDICATOR lamp on the indoor unit is flashing on and off to indicate an abnormality.
To make sure, check the abnormality indication for 2 or 3 times before starting service work.

2) If the electronic control P.C. board is supposed to be defective, check the copper foil pattern for disconnection and
the components for bursting and discoloration.

3) When troubleshooting, refer to the flow chart and the check table on page 19.

4. How to replace batteries

Weak batteries may cause the remote controller malfunction.
In this case, the remote controller can not be repaired only by the battery replacement. To operate the remote
controller normally, discharge the remote controller in the following order.
This remote controller has the RESET button. After refilling new batteries, press the RESET button with tip end of ball
point pen or the like, and then use the remote controller.

18

RESET button

10-2. Instruction of troubleshooting

Operation Indicator

Start

Indoor unit

operates. Outdoor
unit doesn’t

Outdoor unit

operates in
only Test
Run
operation.

Check room

temperature
thermistor.

Outdoor unit
doesn’t
operate even
in Test Run
operation.

Refer to

D

“Check of
outdoor unit”
on page 22.

Indoor unit doesn’t
receive the signal
from remote
controller.

Refer to “Check

B

of remote controller
and receiver P.C.
board” on page 21.

Operation Indicator lamp
on the indoor unit is
flashing on and off.

Cause:Indoor unit
2-time-Room temperature/Indoor coil thermistor trouble
3-time-Indoor fan motor trouble

Check indoor coil
thermistor. Refer
to“Test point
diagram and
voltage” on page

23.

2-time flash

2.5-second OFF
3-time flash

2.5-second OFF

Refer to

A

“Check of indoor
fan motor” on
page 21.

Indoor unit doesn’t
receive the signal from
remote controller.
Also, Operation Indicator
lamp doesn’t flash, when
the EMERGENCY
OPERATION switch is
pressed.

Refer to “Check of

C

indoor electronic control
P.C. board” on page 22.

Check room temperature
thermistor. Refer to“Test
point diagram and
voltage” on page 23.

1. troubleshooting check table

w Before taking measures, make sure that the symptom reappears for accurate troubleshooting.

Self check table

Abnormal

NO.

1

2

point

Indoor coil

thermistor

Room

temperatur
e
thermistor

Indoor fan

motor

2-time flash

2.5-second OFF

3-time flash

Indication

2.5-second OFF

Symptom

Outdoor unit
does not run.

Indoor fan motor
repeats 12
seconds ON and
3 minutes OFF.
When the indoor
fan motor
breaks, the fan
keeps stopping.

Detect method

Detect Indoor coil/room
temperature thermistor short
or open circuit every 8
seconds during operation.

When rotational frequency
feedback signal is not emit
during 12-second indoor fan
operation

Check point

● Check thermistor calibration.

● Reconnect connector.

● Check indoor electronic control P.C.

board.

● Disconnect connector CN211 and then
check connector CN121 2 - 3 to make

sure rotational frequency feedback signal
of 1.5V or over exists.

● Check indoor electronic control P.C.
board.

● Check indoor fan motor.

● Reconnect connector.

19

P

~

BLK

R

MAIN

AUX

RED

S

C

WHT

MAIN

AUX

FUSE

BLK

RED

WHT

GRY

YLW

BRN

MAIN

AUX

BLK

RED

WHTORN

P

YLW

RED

BLU

ORN

PNK

ROTOR

INNER PROTECTOR

P

MS-18NV -

E4

2. Trouble criterion of main parts

Part name

Room
temperature

Measure the resistance with a tester.
(Part temperature 10°C ~ 30°C)

thermistor
Indoor coil

thermistor

8k½ ~ 20k½

Measure the resistance between the terminals with a tester.
(Coil wiring temperature –10°C ~ 40°C)

Normal

Check method and criterion

Abnormal

Opened or short-circuited

Figure

Compressor

Indoor fan
motor

Normal

C-R

C-S

0.95 ~ 1.17½

1.92 ~ 2.36½

Measure the resistance between the terminals with a tester.
(Coil wiring temperature10°C ~ 30°C)

Normal

Motor part

WHT-BLK

BLK-RED

176 ~ 192½
240 ~ 261½

Measure the voltage Power ON.

Normal

BRN-YLW

Sensor part

YLW-GRY

4.5 ~ 5.5V

(When fan revolved one time)

0V➔5V➔0V

(Approx.)

Remain 0V or 5V

Abnormal

Opened or

short-circuited

Abnormal

Opened or

short-circuited

Abnormal

Outdoor fan
motor

Vane motor

Measure the resistance between the terminals with a tester.
(Coil wiring temperature –10°C ~ 40°C)

WHT-BLK
BLK-RED

Normal

102 ~ 126½

97.9 ~ 120½

Abnormal

Opened or

short-circuited

Measure the resistance between the terminals with a tester.
(Part temperature10°C ~ 30°C)

Normal

358 ~ 388½

Opened or short-circuited

Abnormal

20

A

Check of indoor fan motor

Indoor fan does not operate.

No

Reconnect the lead wires.

Disconnect lead wires from connector CN211 on the indoor electronic control P.C. board.
Measure resistance between lead wires No.1 and No.4 and then No.1 and No.2.

Check of remote controller and receiver P.C. board

B

Are lead wires connected?

Is resistance 0 (short circuit) or ° (open circuit)?

Turn OFF the power supply.
Check connector CN211 visually.

Yes

Yes ( 0 or ° )

Repair the indoor fan motor.

Is soldered point normal?

Yes

Insert screwdriver into air outlet to rotate indoor fan
motor slowly for 1 revolution or over, and measure
voltage No.2(+) and No.3(-) on CN121.

No

(others)

No

Does voltage repeat 0V DC and 5V DC?

Replace the indoor electronic control P.C. board.

No

Resolder it.

Yes

Indoor unit operates by pressing the EMERGENCY OPERATION switch, but does not operate with the remote controller.

wCheck if the remote controller is exclusive for this air conditioner.

Switch on the remote controller.

Is LCD display on the remote
controller visible?

Yes

Remove the batteries and then set them
back. Check if the unit operates with the
remote controller.

Does the unit operate with the
remote controller?

Yes

OK

No
(not clear)

No

Replace the batteries.(See page 18.)

Turn on a radio to AM and press switch on
the remote controller.

Is noise heard from radio?

Yes

Are there any fluorescent lights of
inverter or rapid-start type within
the range of 1m?

No

Turn ON the power supply.
Measure the voltage between receiver P.C. board connector No.2
pressed.

No

Yes

Replace the remote controller.

● Re-install the unit away from lights.

● Attach a filter on receiving part.

(+)

and No.1when remote controller button is

Is the voltage approx. 4V DC?

No(5V or 0V DC)

Replace the receiver P.C. board.

21

Yes

Replace the indoor electronic control P.C.
board.

Check of indoor electronic control P.C. board

C

The unit doesn’t operate with the remote controller.
Also, the OPERATION INDICATOR lamp doesn’t light up by pressing the EMERGENCY OPERATION switch.

Check the both “parts side”and “pattern side” of
indoor electronic control P.C. board visually.

Turn OFF the power supply.
Remove indoor fan motor connector CN211 and vane
motor connector CN151 from the indoor electronic
control P.C. board and turn ON the power supply.

The unit doesn’t operate with the remote controller.
Also, the Operation Indicator lamp doesn’t light up
by pressing the EMERGENCY OPERATION switch.

No

Be sure to check both fresistance.

Replace the vane
motor.

Yes

Is winding
resistance of
vane motor 0 "?

Is winding
resistance of
fan motor 0 "?

Yes

Replace the fan
motor .

No

No

Yes

Replace the fuse.

Is fuse(F11) blown?

Be sure to check both fuse
and varistor in any case.

Is varistor(NR11) burnt?

Replace the varistor.

1

3

CN201

Yes

No

No

Yes

1
2

F12

Terminal
block

1.Pull out the power
supply cord.

2.Measure resistance
between CN201
the indoor electronic
control P.C. board

N on the terminal

and
block with a tester.

1 on

L
N

Trouble of the
indoor electronic
control P.C. board.

Yes

Is resistance 0"?

No

Trouble of fuse (F12)

D

Check of outdoor unit

Compressor and outdoor fan do not operate.(Only indoor fan operates.)

Start

Press the EMERGENCY
OPERATION switch.
3-minute time delay works.
Test run operation operates for 30
minutes.

Yes

Check the outdoor
wiring, the outdoor
fan motor and
compressor.

Yes

Check the
continuity of
indoor and
outdoor unit

Check the voltage to terminal block
of outdoor unit.
Is there 220-240V AC to terminal
block between 2 - N ?

No

Check the voltage to terminal block
of indoor unit.
Is there 220-240V AC to terminal
block between 2 - N ?

No

Replace the indoor electronic
control P.C. board.

22

TEST POINT DIAGRAM AND VOLTAGE
MS-18NV ­Indoor electronic control P.C. board

E4

Fan motor power supply

}

Fuse 250V AC 3.15A

Power supply input

}

220-240V AC

Auto restart function
Cut the Resistor JR06.
(Refer page 17.)

+

C144

C144

--

Room temperature thermistor(RT11)

Indoor coil thermistor(RT12)

Timer short mode point

JPG

--

JP45

+

Room temperature thermistor (RT11)
Indoor coil thermistor (RT12)

}

}

12V DC

5V DC

Emergency
operation switch

23

11

(1)

(2)

1Slide the sleeve.
2Pull the terminal while

pushing the locking
lever.

1Hold the sleeve, and
pull out the terminal
slowly.

In case of a terminal with lock mechanism, detach the terminal as shown below.

<"Terminal with lock mechanism" Detaching points>

DISASSEMBLY INSTRUCTIONS

11-1. MS-18NV -

E4

INDOOR UNIT

OPERATING PROCEDURE PHOTOS

1. Removing the front panel

(1) Remove the screws caps at the down of the front panel.

Remove the screws.

(2) Pull the panel down to your side slightly and unhook the

catches at the top.

Photo 1

Front panel

Screws

2. Removing the electronic control P.C. board

(1) Remove the front panel. (Refer to 1)
(2) Remove the electrical cover.
(3) Remove the screw, remove the terminal cover.
(4) Remove the screw on the terminal block.
(5) Unhook the catch of the lamp holder.
(6) Remove the receiver holder.
(7) Disconnect the connectors and the lead wire from 52C

relay on the electronic control P.C. board and remove the
ground and the indoor coil thermistor.

(8) Remove the electronic control P.C. board.

24

Photo 2

Ground

Indoor coil thermistor

Screws

Terminal
block
screw

Indoor
electronic
control
P.C. board

OPERATING PROCEDURE PHOTOS

3. Removing the electrical box

(1) Remove the front panel. (Refer to 1)
(2) Remove the electrical cover.
(3) Disconnect the connector of the indoor coil thermistor.
(4) Disconnect the motor connector (CN211 and CN121) and

the vane motor connector (CN151) on the electronic
control P.C. board.

(5) Remove the screw of the electrical box, remove the

electrical box.

4. Removing the indoor fan motor and the line flow fan

(1) Remove the front panel.
(2) Remove the electrical box.
(3) Unhook the catches on the both sides of the nozzle

assembly.
(4) Remove the nozzle assembly.
(5) Remove the screws of the bearing support.
(6) Remove the screw of the heat exchanger unhook the

catch.
(7) Lifting the heat exchanger, remove the bearing support.
(8) Remove the motor support.
(9) Loose the screw fixing the line flow fan, remove the line

flow fan.

)

(

Remove the screws of the motor band, remove the fan

10

motor.

Photo 3

Photo 4

Catch

Heat exchanger

screw

Bearing support
screws

screw

screw

Heat exchanger

25

Photo 5

Line flow fan

Indoor fan motor

Fan
motor
screws

Screws of
motor band

11-2. MU-18NV -

E4

OUTDOOR UNIT

OPERATING PROCEDURE PHOTOS

1. Removing the cabinet

(1) Remove the screws of the cabinet.
(2) Hold the bottom of the cabinet on the both side to remove

the cabinet.

Photo 1

Screws

Service
panel

Photo 2

2. Removing the electrical parts

(1) Remove the service panel and the cabinet.
(2) Remove the following parts.

•Compressor capacitor (C1)

•Outdoor fan capacitor (C2)

•Terminal block

Screws

Photo 3

26

Compressor capacitor

OPERATING PROCEDURE

3. Removing the outdoor fan motor

(1) Remove the cabinet. (Refer to 1)
(2) Disconnect the connector remove the hooked lead wire

from the fan motor.
(3) Remove the propeller nut and remove the propeller fan.
(4) Remove screws securing the fan motor.

Photo 4

PHOTOS

Hook

Connector

4. Removing the compressor

(1) Remove the cabinet. (Refer to 1)
(2) Remove the soundproof felt.
(3) Remove the terminal cover on the compressor
(4) Disconnect lead wires from the glass terminal of the

compressor.
(5) Release gas from the refrigerant circuit.
(6) Disconnect the welded part of the discharge pipe.
(7) Disconnect the welded part of the suction pipe.
(8) Remove nuts fixing the compressor.
(9) Remove the compressor.

Propeller fan

Photo 5

Compressor

Soundproof felt

Propeller fan nut

Discharge
pipe

Suction
pipe

27

Compressor set nuts

PARTS LIST12

E02 141 620
E02 138 667
E02 138 666

8
9

10

INDOOR HEAT EXCHANGER
UNION(LIQUID)
UNION(GAS)

{6.35
{15.88

1
1
1

MS-18NV - (WH)

E4

12-1. INDOOR UNIT

STRUCTURAL PARTS

1

2

6

SCREW CAP

12-2. INDOOR UNIT

HEAT EXCHANGER

5

8

3

Optional parts
(See page 31.)

910

4

12-1. INDOOR UNIT STRUCTURAL PARTS

Part number that is circled is not shown in the illustration.

NO.

1

E02 138 000

2

E02 138 010

3

E02 143 234

4

E02 141 100

5

E02 141 970

6

E02 143 067

7

E02 171 007

FRONT PANEL (WH)
GRILLE (WH)
BOX (WH)
AIR FILTER
INSTALLATION PLATE
SCREW CAP (WH)
LAMP PANEL (WH)

Part Name

12-2. INDOOR UNIT HEAT EXCHANGER

Symbol

in Wiring

Diagram

Q'ty/unit

MS-18NV-

(WH)

1
1
1
2
1
3
1

E4

RemarksPart No.

3PCS/SET

28

MS-18NV - (WH)

E02 143 235
E02 143 040
E02 141 702
E02 141 300
E02 001 505
E02 138 395
E02 443 452
E02 141 302
E02 141 303
E02 138 329
E02 141 509
E02 197 375
E02 085 385
E02 141 468
E02 001 504
E02 138 307
E02 138 308
E02 127 382
E02 205 381
E02 138 383

1
2
3
4
5
6
7
8
9

10

11
12
13
14
15
16
17
18
19
20

NOZZLE (WH)
VANE (WH)
DRAIN HOSE
INDOOR FAN MOTOR
RUBBER MOUNT
POWER SUPPLY CORD
ELECTRONIC CONTROL P.C. BOARD
LINE FLOW FAN
VANE MOTOR
DISPLAY P.C. BOARD
BEARING MOUNT
TERMINAL BLOCK
VARISTOR
RECEIVER P. C. BOARD
SLEEVE BEARING
INDOOR COIL THERMISTOR
ROOM TEMPERATURE THERMISTOR
FUSE
THERMAL FUSE
SURGE ABSORBER

Symbol

in Wiring

Diagram

Q'ty/unit

1
1
1
1
2
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1

RA4V27 ­2PCS/SET

AUTO RESTART

3.15A
93:

Remarks

Part No.

NO.

Part Name

MF

MV

TB

NR11

RT12
RT11

F11

F12

DSAR

(WH)

MS-18NV-

E4

E02 138 426
E02 141 083

21
22

REMOTE CONTROLLER
REMOTE CONTROLLER HOLDER

1
1

E4

12-3. INDOOR UNIT

FUNCTIONAL PARTS
AND ELECTRICAL PARTS

12-4. ACCESSORY P ARTS

AND REMOTE CONTROLLER

8

10

7

21 22

15

SLEEVE
BEARING

11

3

1

16

2

INDOOR COIL
THERMISTOR

9

12

6

5

4

14

ROOM TEMPERATURE

17

THERMISTOR

12-3. INDOOR UNIT FUNCTIONAL PARTS AND ELECTRICAL PARTS

Part number that are circled are not shown in the illustration.

12-4. ACCESSORY PARTS AND REMOTE CONTROLLER

29

Symbol

in Wiring

Diagram

Q'ty/unit

Remarks

Part No.

NO.

Part Name

MU-18NV-

E4

E02 141 232
E02 141 521
E02 141 245
E02 217 630
E02 140 515
E02 217 900
E02 217 290
E02 144 301
E02 141 501
E02 082 353
E02 138 351
E02 197 374
E02 138 936
E02 138 506
E02 139 662
E02 150 661
E02 140 233
E02 095 382

1
2
3
4
5
6
7
8

9
10
11
12
13
14
15
16
17
18

CABINET
GRILLE
SERVICE PANEL
OUTDOOR HEAT EXCHANGER
MOTOR SUPPORT
COMPRESSOR
BASE
OUTDOOR FAN MOTOR
PROPELLER FAN
COMPRESSOR CAPACITOR
OUTDOOR FAN CAPACITOR
TERMINAL BLOCK
CAPILLARY TUBE
COMPRESSOR RUBBER SET
STOP VALVE(LIQUID)
STOP VALVE(GAS)
BACK PANEL
FUSE

1
1
1
1
1
1
1
1
1
1
1
1
1
4
1
1
1
1

PH-33VPET

RA6V50 -

50+/440V

3.0+/440V

{3.0o{2.0o700
4RUBBERS/SET

{ 6.35
{15.88

250V/2A

MC

MF

C1
C2
TB

F

MU-18NV -

E4

12-5. OUTDOOR UNIT

STRUCTURAL PARTS

17

11

12

1

10

4
8

3

2

15
16

9

Part number that are circled are not shown in the illustration.

5

30

14

6

7

OPTIONAL PARTS13

Part No.

Model

MAC-1100FT

MS-18NV -

E4

Part No.

Model

MAC-1600DF

MS-18NV -

E4

Deodorizing filter (Gray sponge type)

Air cleaning filter (White bellows type)

13-1. AIR CLEANING FILTER

● AIR CLEANING FILTER removes fine dust of 0.01 micron from air by means of static electricity.

● Normal life of AIR CLEANING FILTER is 3 months. However, when it becomes dirty, replace it as soon as possible.

● Clogged AIR CLEANING FILTER may reduce the air conditioner capacity or cause frost on the air outlet.

● DO NOT reuse AIR CLEANING FILTER even if it is washed.

● DO NOT remove or attach AIR CLEANING FILTER during unit operation.

13-2. DEODORIZING FILTER

● DEODORIZING FILTER removes ammonia and hydrogen sulphide emitted from tobacco, and odor of pets.

● Clean DEODORIZING FILTER every two weeks. If the filter is particularly dirty, clean the filter more often.

● For cleaning, soak the filter in warm water for a while, and then wash and rinse it. Dry the filter in the shade

thoroughly.

● When the filter color is still dark even after cleaning, replace the filter with a new one.
Replace the filter at least once a year.

● DEODORIZING FILTER and AIR CLEANING FILTER can be attached on either side.

31

HEAD OFFICE MITSUBISHI DENKI BLDG.MARUNOUCHI TOKYO100-8310 TELEX J24532 CABLE MELCO TOKYO

CC

Copyright 1999 MITSUBISHI ELECTRIC ENGINEERING CO.,LTD
Issued in Jan. 1999. No.OB228 305
Printed in Japan

New publication, effective Jan. 1999
Specifications subject to change without notice.