Mitsubishi Electric MS-A18VD-K1, MS-A18VD-K2, MS-A24VD-K1, MS-A18VD, MS-A30VD-K2 Service Manual
...
SPLIT-TYPE AIR CONDITIONERS
INDOOR UNIT
SERVICE MANUAL
Models
Revision C:
• Another type of the electronic control P.C.
board (TYPE 2) has been added to the
original one (TYPE 1). They are both compatible with MS-A18/24/30VD- .
Please void OB400, REVISED EDITION-B.
K
No. OB400
REVISED EDITION-C
MS-A18VDMS-A18VDMS-A24VDMS-A24VDMS-A30VDMS-A30VD-
MS-A18VD
MS-A24VD
MS-A30VD
K1
K2
K1
K2
K1
K2
Outdoor unit service manual
MU-A·VD Series (OB401)
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. TROUBLESHOOTING······································12
9. DISASSEMBLY INSTRUCTIONS ····················21
10. PARTS LIST······················································23
11. RoHS PARTS LIST···········································26
NOTE:
• This service manual describes technical data of the indoor units.
• RoHS compliant products have <G> mark on the spec name plate.
For servicing of RoHS compliant products, refer to the RoHS Parts List.
TM
Indoor unit:Unit size:W1,015mmoH320mmoD190mm ➞ W1,100mmoH325mmoD258mm
Electricity receiving unit: Indoor unit ➞ Outdoor unit
Rated voltage : 220/240V ➞ 220-230-240V
Frequency
New Model
Old Model
MS-18NV -
KB
w
: change
MS-A18VD -
K1
50Hz
MS-18UV -
P1
MS-18RV -
R1
w
w
w
w
w
w
Indoor unit:Unit size:W1,015mmoH320mmoD190mm ➞ W1,100mmoH325mmoD258mm
Electricity receiving unit: Indoor unit ➞ Outdoor unit
Rated voltage : 220/240V ➞ 220-230-240V
Frequency
New Model
Old Model
MS-24NV -
K1
MS-A24VD -
K1
50Hz
MS-24UV - P1MS-24RV -
R1
w
w
w
w
w
w
Indoor unit:Unit size:W1,100mmoH325mmoD227mm ➞ W1,100mmoH325mmoD258mm
Rated voltage : 220/240V ➞ 220-230-240V
Frequency
New Model
Old Model
MS-30SV - K1MS-30SV -
P1
MS-A30VD -
K1
50Hz
w
w
w
Use the specified refrigerant only
OB400C
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-A18VD- , MS-A24VD- and MS-A30VD- have been added.
K2K2K2
Revision B:
• Remote controller model “KM04B” has been added.
There are two remote controller models for “ ” and “ ”. (KP0B, KM04B)
You can use the remote controller model “KP0B” and “KM04B”.
The remote controller model “KM04B” is supplied as service parts for “ ” and “ ”.
K2K1
K2K1
Revision C:
• Another type of the electronic control P.C. board (TYPE 2) has been added to the original one (TYPE 1). They are both com-
patible with MS-A18/24/30VD- .
K
TECHNICAL CHANGES1
MS-A18VD - ➔ MS-A18VD MS-A24VD - ➔ MS-A24VD MS-A30VD - ➔ MS-A30VD -
1. Fan guard has been added.
2. Fan speed has been changed.
K2K1
K2K1
K2K1
3. Wiring diagram has been changed.
4. FUSE (F12) has been removed. (MS-A18/24VD- )
5. “8-5.C Check of indoor electronic control P.C. board” has been changed.
K2
2
2
OB400C
PART NAMES AND FUNCTIONS
INDOOR UNIT
MS-A18VD
MS-A24VD
MS-A30VD
Air cleaning filter
(White bellows type)
Front Panel
Catechin air filter
Vertical vanes
Horizontal vane
Operation section
(When the grille is opened)
Emergency operation switch
Grille
Air inlet
Remote control
receiving section
Remote controller
Display section
Operation indicator lamp
Remote control
receiving section
3
ON/OFF
TOO
COOL
PM
AM
TOO
WARM
ON/OFF
FAN
TOO
WARM
TOO
COOL
VANE
MODE
ECONO COOL
STOP
START
HR.
MIN.
WIDE VANE
LONG
I FEEL
COOL
DRY
PM
CLOCK
AM
RESET CLOCK
FAN
Open the front lid.
Signal transmitting section
Operation display section
OPERATE/ STOP
(ON/ OFF)button
TEMPERATURE buttons
Indication of remote controller
model is on back.
OPERATION SELECT button
FAN SPEED CONTROL button
OFF-TIMER button
HR. button
MIN. button
(TIME SET button)
ON-TIMER button
RESET button
ECONO COOL button
VANE button
(Horizontal vane button)
CLOCK SET button
LONG button
WIDE VANE button
(Vertical vane button)
Installation plate
Installation plate fixing screw 4 x 25 mm
Remote controller holder
Fixing screw for 3 3.5 x 16 mm (Black)
Battery (AAA) for remote controller
Wireless remote controller
Felt tape (Used for left or left-rear piping)
Air cleaning filter
Pipe cover
1
2
3
4
5
6
7
8
9
1
7
1
2
2
1
1
2
ACCESSORIES
OB400C
REMOTE CONTROLLER
MS-A18VD
MS-A24VD
MS-A30VD
4
3
Indoor model
Function
Power supply
Air flow
(High/Med./Low)
Running current
Power input
Auxiliary heater
Power factor
Fan motor current
Model
Winding
resistance(at 20:)
Dimensions WOHOD
Weight
Air direction
Sound level
(High/Med./Low)
Fan speed
(High/Med./Low)
Fan speed regulator
Thermistor RT11(at 25:)
Thermistor RT12(at 25:)
Thermistor RT13(at 25:)
Remote controller model
Electrical
data
Fan
motor
Special
remarks
Capacity
Cooling
Single phase
220-230-240V, 50Hz
1,100O325O258
16
5
3
10
10
KP0B / KM04B
0.33-0.34-0.35
67-69-75
—
92-88-89
0.33-0.34-0.35
RC4V40-AA
WHT-BLK 138.2
RED-BLK 159.0
774/660/552
0.30-0.30-0.31
60-60-64
—
91-87-86
0.30-0.30-0.31
RC4V32-AA
WHT-BLK 293.0
RED-BLK 146.0
42/37/33
K /h
A
W
A(kW)
%
A
"
mm
kg
dB
rpm
k"
k"
k"
972/828/684
45/41/37
1,220/1,070/910 1,280/1,130/970
1,220/1,070/910 1,280/1,130/9701,010/880/760 1,070/920/780
—
10
MS-A18VD - K1 MS-A18VD - K2 MS-A24VD - K1 MS-A24VD - K2 MS-A30VD - K1 MS-A30VD - K2
OB400C
SPECIFICATION
NOTE:Test conditions are based on ISO 5151.
Cooling : Indoor Dry-bulb temperature 27: Wet-bulb temperature 19:
Indoor-Outdoor piping length : 5 m
Outdoor Dry-bulb temperature 35: Wet-bulb temperature 24:
5
OUTLINES AND DIMENSIONS4
OB400C
MS-A18VD MS-A24VD MS-A30VD
INDOOR UNIT
Unit: mm
325
56
58
1100
791
19
1068
253
Installation plate
98
47
98 173414.5 414.5
Wall hole [75
Air in
258
Air out
5
Installation plate
Indoor unit
173
Liquid line [ 6.35-0.5m
Gas line [ 12-0.43m
{
Insulation [ 50 O.D
Liquid line [ 9.52-0.5m
Gas line [ 16-0.43m
{
Insulation [ 50 O.D
Drain hose [16
(Connected part O.D)
Insulation [28
2.5
[ 32 I.D
for MS-A18VD
for MS-A24VD
[ 32 I.D
for MS-A30VD
255.547
7.5
315
162
Wireless remote controller
6
5
OB400C
WIRING DIAGRAM
MS-A18VD - MS-A24VD -
K1K1
INDOOR UNIT
TO OUTDOOR
UNIT
CONNECTING
220-230-240V~
220-230-240V~
SYMBOL
C11
F11
F12
HIC1
NOTE:1. About the outdoor side electric wiring refer to the outdoor unit electric wiring diagram for servicing.
INDOOR FAN CAPACITOR
FUSE(3.15A)
THERMAL FUSE (93:)
DC/DC CONVERTER
INDOOR FAN MOTOR(INNER PROTECTOR)
MF
2. Use copper conductors only. (For field wiring)
3. Symbols below indicate.
/: Terminal block, : Connector
MS-A18VD - MS-A24VD -
TB
2
WHT
N
BLU
L
BRN
NAME
F12
GRN/YLW
MV2
CN
151
MV2
BLU
1
BLU
2
15
MV1
SYMBOL
NR11
RT11
RT12
K2K2
MV1
MV2
CN201
3
2
BLU
1
CN
102
CN
ELECTRONIC CONTROL P.C. BOARD
101
33
DISPLAY
P.C. BOARD
RECEIVER
P.C. BOARD
NAME NAME
HORIZONTAL VANE MOTOR
VERTICAL VANE MOTOR
VARISTOR
ROOM TEMPERATURE THERMIST OR
INDOOR COIL THERMISTOR
HIC1
3
52C/
X11
4
F11
REMOTE
CONTROLLER
INDOOR UNIT
TO OUTDOOR
UNIT
CONNECTING
220-230-240V~
220-230-240V~
TB
2
WHT
N
BLU
L
BRN
CN
151
CN
102
CN201
3
2
1
CN
ELECTRONIC CONTROL P.C. BOARD
101
HIC1
3
X11
4
F11
NR11
SR141
NR11
SR141
C11
CN211
SYMBOL
SR141
TB
52C/X11
CN
112
CN
111
CN
121
1
C11
3
4
CN211
CN
112
CN
111
CN
121
3
1
3
4
RT12
RT11
BLK
GRY
YLW
BRN
WHT
RED
MF
SOLID STATE RELAY
TERMINAL BLOCK
COMPRESSOR CONTACTOR
RT12
RT11
3
BLK
GRY
YLW
BRN
WHT
RED
MF
GRN/YLW
MV2
SYMBOL
C11
F11
HIC1
MV1
NOTE:1. About the outdoor side electric wiring refer to the outdoor unit electric wiring diagram for servicing.
INDOOR FAN CAPACITOR
FUSE(T3.15AL250V)
DC/DC CONVERTER
INDOOR FAN MOTOR(INNER PROTECTOR)
MF
HORIZONTAL VANE MOTOR
2. Use copper conductors only. (For field wiring)
3. Symbols below indicate.
/: Terminal block, : Connector
NAME
MV2
15
MV1
DISPLAY
P.C. BOARD
SYMBOL
MV2
NR11
RT11
RT12
SR141
33
RECEIVER
P.C. BOARD
REMOTE
CONTROLLER
NAME NAME
VERTICAL VANE MOTOR
VARISTOR
ROOM TEMPERATURE THERMIST OR
INDOOR COIL THERMISTOR
SOLID STATE RELAY
7
SYMBOL
TB
X11
TERMINAL BLOCK
CONTACTOR
MS-A30VD
OB400C
INDOOR UNIT
TO OUTDOOR
UNIT
CONNECTING
12V
220-230-240V~
3
N
2
TB
RED
BLU
BRN
CN
151
CN
102
CN201
3
2
1
TAB12
HIC1
NR11
F11
CN
ELECTRONIC CONTROL P.C. BOARD
101
SR141
C11
4
3
2
1
CN112
CN
121
1
3
4
CN211
CN
111
RT13
RT12
3
BLK
GRY
YLW
BRN
WHT
RED
RT11
MF
MV2
15
MV1
DISPLAY
P.C. BOARD
SYMBOL
MV2
NR11
RT11
RT12
RT13
33
RECEIVER
P.C. BOARD
REMOTE
CONTROLLER
NAME NAME
VERTICAL V ANE MOT OR
V ARISTOR
ROOM TEMPERATURE THERMISTOR
INDOOR COIL THERMISTOR (MAIN)
INDOOR COIL THERMISTOR (SUB)
GRN/YLW
MV2
SYMBOL
C11
F11
HIC1
MV1
NOTE:1. About the outdoor side electric wiring refer to the outdoor unit electric wiring diagram for servicing.
INDOOR FAN CAPACITOR
FUSE (T3.15AL250V)
DC/DC CONVERTER
INDOOR FAN MOTOR (INNER PROTECTOR)
MF
HORIZONT AL VANE MOT OR
2. Use copper conductors only. (For field wiring)
3. Symbols below indicate.
/: Terminal block, : Connector
NAME
SYMBOL
SR141
TB
SOLID STATE RELAY
TERMINAL BLOCK
8
6
Indoor
heat
exchanger
Flared connection
RT11
Room
temperature
thermistor
Distributor
Flared connection
Refrigerant pipe
[12.7
(with heat insulator)
Refrigerant pipe
[6.35
(with heat insulator)
Indoor coil
thermistor
RT12
Strainer
#50
OB400C
REFRIGERANT SYSTEM DIAGRAM
MS-A18VD
INDOOR UNIT
Unit : mm
MS-A24VD
INDOOR UNIT
Indoor
heat
exchanger
Room temperature
thermistor
RT11
Indoor coil
thermistor
RT12
Strainer
#50
Refrigerant pipe
[15.88
(with heat insulator)
Flared connection
Flared connection
Refrigerant pipe
[6.35
(with heat insulator)
MS-A30VD
INDOOR UNIT
Indoor
heat
exchanger
Indoor coil
thermistor
RT13 (sub)
Room temperature
thermistor
RT11
Strainer
Indoor coil
thermistor
RT12 (main)
#50
Refrigerant pipe
[15.88
(with heat insulator)
Flared connection
Flared connection
Refrigerant pipe
[9.52
(with heat insulator)
Refrigerant flow in cooling
9
7
OB400C
SERVICE FUNCTIONS
MS-A18VD
MS-A24VD
MS-A30VD
7-1. TIMER SHORT MODE
For service, set time can be shortened by short circuit of JPG and JPS the electronic control P.C. board.
The time will be shortened as follows. (Refer to 8-6.)
Set time : 1-minute ➔ 1-second
Set time : 3-minute ➔ 3-second
It takes 3 minutes for the compressor to start operation. However, the starting time is shortened by short
circuit of 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 :
Remote controller model : KP0B
Remote controller model : KM04B
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.
J1
J2
NOTE : For modification, take out the
batteries and press the
OPERATE/STOP(ON/OFF)
button twice or 3 times at first.
After finish modification, put
back the batteries then press
the RESET button.
J1
J2
10
No. 1 unit
No. 2 unit
No. 3 unit
No. 4 unit
1 unit operation
No modification
–
–
–
2 units operation
Same as at left
Solder J1
–
–
3 units operation
Same as at left
Same as at left
Solder J2
–
4 units operation
Same as at left
Same as at left
Same as at left
Solder both J1 and J2
Table 1
OB400C
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 accepts 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 has turned off, or the power supply has shut down.
Please conduct the above setting once again after the power has restored.
7-3. 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 disable “AUTO RESTART FUNCTION”
1Turn off the main power for the unit.
2Pull out the indoor electronic control P.C. board and the display P.C. board.(Refer to 9-1.2.)
3Solder the Jumper wire or the RESISTOR 220" to the RESISTOR JR07 on the indoor electronic control P.C.board.
(Refer to 8-6.)
Operation
1If the main power has been cut, the operation settings remain.
2After the power is restored, the unit automatically resumes the same operation as the memory has recorded.
However, it takes the compressor at least 3 minutes to get started.
NOTE:
•The operation settings are memorized when 10 seconds have passed after the indoor unit was operated with the remote
controller.
•If the 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 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.
11
TROUBLESHOOTING8
Lead wiring
<Incorrect>
Housing point
<Correct>
RESET button
Insert the negative pole
of the batteries first.
Check if the polarity of
the batteries is correct.
OB400C
MS-A18VD
MS-A24VD
MS-A30VD
8-1. 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 turn off the unit first with the remote controller, and then after confirming the horizontal vane is closed, turn off the breaker and / or disconnect the power plug.
2) Be sure to turn OFF the power supply before removing the front panel, the cabinet, the top panel and the electronic
control P.C. board.
3) When removing the electronic control P.C. board, hold the edge of the board with care NOT to apply stress on the
components.
4) 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 how many times the OPERATION INDICATOR lamp is flashing on and off before starting service
work.
2) Before servicing that the connector and terminal are connected properly.
3) When the electronic control P.C. board seems to be defective, check the copper foil pattern for disconnection and the
components for bursting and discolouration.
4) When troubleshooting, refer to 8-2. and 8-3.
4. How to replace batteries
Weak batteries may cause the remote controller malfunction.
In this case, replace the batteries to operate the remote controller normally.
1 Remove the front lid and insert batteries.
Then reattach the front lid.
2 Press the RESET button with a thin instrument,
and then use the remote controller.
NOTE: 1. If the RESET button is not pressed, the remote controller may not operate correctly.
2. Do not use the leaking batteries.
12
Start
Indoor unit
operates.
Outdoor unit
does not
operate.
Indoor unit
does not receive
the signal from
remote controller.
OPERATION INDICATOR
lamp on the indoor unit is
flashing on and off.
Outdoor unit
operates
in only Test
Run operation.
w
Indoor unit
operates when
EMERGENCY
OPERATION
switch is pressed.
Indoor unit
does not operate
when
EMERGENCY
OPERATION
switch is pressed.
Check room
temperature
thermistor.
Refer to 8-6.
"Test point
diagram and
voltage".
Refer to
"Check of
outdoor unit".
Refer to 8-5. B
"Check of
remote controller
and receiver
P.C. board".
MS-A30VD
Flash on and
off at 0.5-second
intervals
Cause:
Indoor/
Outdoor unit
• Mis-wiring
2-time flash
Cause:
Indoor unit
• T roub le of
room temp erature/
indoor coil
thermistor
3-time flash
Cause:
Indoor unit
• T roub le of
indoor fan
motor
MU-A30VD
6-time flash
Cause:
Outdoor unit
• T roub le of
thermistor
in outdoor
unit
MU-A30VD
7-time flash
Cause:
Outdoor unit
• T roub le of
outdoor
control
system
Refer to
8-5. D
"How to
check
mis-wiring
(When
outdoor unit
does not work)".
Check room
temperature
thermistor
and indoor
coil thermistor.
Refer to 8-6.
"Test point
diagram and
voltage".
Refer to
8-5. A
"Check of
indoor fan
motor".
Refer to
"Check of
outdoor
thermistor".
Replace the
deicer
P.C. board.
MU-A30VD
10-time flash
Cause:
Outdoor unit
• T roub le of
low discharge
temperature
protection
Refer to
"Check of
LEV".
4-time flash
Cause:
Indoor unit
• T roub le of
indoor
control
system
Replace the
indoor
electronic
control
P.C. board.
1. Check indoor /
outdoor
connecting wire.
2. Check of outdoor
fuse.
(MU-A18/A24VD
)
3. Refer to 8-5. C
"Check of indoor
electronic control
P.C. board".
MU-A24VD-
K2
MU-A30VD
Outdoor unit
does not
stop even
if indoor unit
stop.
Indoor unit
operates.
Outdoor unit
does not operate
normally.
MU-A30VD
Outdoor unit
repeats start
and stop.
Refer to outdoor unit service manual.
"Test Run operation" means the operation within 30 minutes after EMERGENCY OPERATION switch is pressed.w
MU-A30VD
Outdoor unit
does not operate
even in Test
Run operation.
w
Refer to
"Check of
outdoor unit".
Refer to
"Check of
solenoid
valve coil".
8-2. Instruction of troubleshooting
OB400C
13
No.
1
2
4
5
6
SymptomIndication Condition
Remedy
0.5-second ON
0.5-second OFF
Mis-Wiring
Outdoor
thermistors
Outdoor
control
system
Indoor coil
thermistor
3 minutes after power supply turns ON, when
serial signal is not received.
<Thermistor short>
Thermistors are abnormal when they short
after compressor start-up.
<Thermistor open>
Thermistors are abnormal when they open
after compressor start-up.
However, discharge temperature thermistor is
abnormal when open circuit is detected more
than 10 minutes after compressor start-up.
Nonvolatile memory data cannot be read
properly on deicer P.C. board.
• Shortage of refrigerant
• Replace the deicer P.C.
board.
Refer to "Check of outdoor
thermistor".
Refer to outdoor unit service
manual.
• Replace the deicer P.C.
board.
Refer to outdoor unit service
manual.
• Refer to 8-5. D "How to check
mis-wiring ".
3
Indoor fan
motor.
7
Low
discharge
temperature
protection
Discharge temperature has been 50: or less
for 20 minutes.
Abnormal
point
Outdoor unit
does not
operate.
Room
temperature
thermistor
2-time flash
2.5-second OFF
Detect Indoor coil/room temperature
thermistor short or open circuit every 8
seconds during operation.
• Refer to the characteristics of
indoor coil thermistor,
sub indoor coil thermistor,
and room temperature
thermistor on 8-6.
3-time flash
2.5-second OFF
Indoor fan
motor repeats
12 seconds
ON and 3
minutes OFF.
When the
indoor fan
motor breaks,
the fan keeps
stopping.
Rotational frequency feedback signal is not
emitting during 12-second indoor fan
operation.
• Refer to 8-5. A "Check of
indoor fan motor".
4-time flash
2.5-second OFF
Indoor
control
system
Nonvolatile memory data cannot be read
properly on indoor electronic control P.C.
board.
Outdoor unit
does not
operate.
Outdoor unit
does not
operate.
• Replace the indoor electronic
control P.C. board.
6-time flash
2.5-second OFF
• Refer to "Check of LEV".
• Check refrigerant circuit and
refrigerant amount.
Refer to outdoor unit service
manual.
Outdoor unit
does not
operate.
Outdoor unit
does not
operate.
Outdoor unit
does not
operate.
MS-A30VD
MU-A30VD
MU-A30VD
MU-A30VD
7-time flash
2.5-second OFF
10-time flash
2.5-second OFF
Operation Indicator
Lighted
Not lighted
OB400C
8-3. Troubleshooting check table
• Before taking measures, make sure that the symptom reappears for accurate troubleshooting.
When the indoor unit has started operation and the following detection method has detected an abnormality
(the first detection after the power ON), the indoor electronic control P.C. board turns OFF the indoor fan motor
with the OPERATION INDICATOR lamp flashing.
· Flashing of the OPERATION INDICATOR lamp (the left-hand side lamp) indicates
possible abnormalities.
· The OPERATION INDICATOR lamp (the left-hand side lamp) is lighting during
normal operation.
14
8-4. Trouble criterion of main parts
MAIN
AUX.
BLK
REDWHT
ORN
BLUYLW
RED
PNK
ROTOR
282 ~ 306 "
Normal
Color of lead wire
WHT - BLK
BLK - RED
MS-A18VD
Normal
282 ~ 304 "
MS-A24/30VD
132 ~ 144 "
141 ~ 152 " 152 ~ 166 "
Color of lead wire
BRN - YLW
YLW - GRY
Normal
4.5 ~ 5.5 V
(When fan revolved one time)
0V➔5V➔0V
(Approx.)
OB400C
MS-A18VD
MS-A24VD
MS-A30VD
Part name
Room
temperature
thermistor
(RT11)
Indoor coil
thermistor
(RT12(main), RT13(sub))
Indoor fan
motor (MF)
INNER
PROTECTOR
135i 5: OPEN
86i15: CLOSE
Horizontal vane
motor(MV1)
Vertical vane
motor(MV2)
Check method and criterion
Measure the resistance with a tester.
(Part temperature 10°C ~ 30°C)
Refer to 8-6. “Test point diagram and voltage”, “Indoor electronic control P.C.
board”, for the chart of thermistor.
Measure the resistance between the terminals with a tester.
(Coil wiring temperature10°C ~ 30°C)
Motor part
Measure the voltage Power ON.
Sensor part
Measure the resistance between the RED terminals and other ones.
(Winding temperature10°C ~ 30°C)
Figure
15
PP
:INNER PROTECTOR
8-5. Troubleshooting flow
OB400C
When OPERATION INDICATOR lamp flashes 3-time.
Indoor fan motor does not operate.
AA
Check of indoor fan motor
Turn OFF the power supply.
Check connector CN211 visually.
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.3 and No.4.
Are lead wires connected?
Is resistance 0 (short circuit) or ∞ (open circuit)?
Yes
Yes ( 0 or ∞ )
Repair the indoor fan motor.
Is soldered point of the connector
correctly soldered?
Yes
Turn ON the power supply.
Stop it if the unit operate. Insert screwdriver into
air outlet to rotate indoor fan motor slowly for 1
No
(others)
revolution or over, and measure voltage No.2(+)
and No.3(-) on CN121.
No
Does voltage repeat 0 VDC and 5 VDC?
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.
BB
Check of remote controller and receiver P.C. board
w Check if the remote controller is exclusive for this air conditioner.
Switch on the remote controller.
Is LCD display on the remote controller visible?
Yes
No
(not clear)
Replace the batteries
(Refer to 8-1.4.).
Remove batteries, then set them back and
press the RESET button.
Check if the unit operates with remote controller.
Does the unit operate with remote
controller?
Yes
OK
Measure the voltage between receiver P.C. board connector CN301 No.1
the remote controller button is pressed (Refer to 8-6.).
No
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
Is the voltage approximately 4 VDC?
No (5V or 0 VDC)
Replace the receiver P.C.board.
16
No
Yes
(+)
and No.3
Yes
Replace the remote controller.
● Reinstall the unit away from lights.
● Attach a filter on receiving part.
(-)
when
Replace the indoor electronic control
P.C. board
Indoor electronic
control P.C. board
Varistor (NR11)
Indoor electronic
control P.C. board
Fuse (F11)
Check both “parts side” and “pattern
side” of the indoor electronic control P.C.
board visually.
Replace the fuse.
Is fuse(F11) blown?
Replace the fan
motor.
Is the winding
resistance of
fan motor 0 "?
Is the winding
resistance of
vane motor 0 "?
No
Yes
Replace the vane
motor.
No
Yes
Yes
Is varistor(NR11) burnt?
Replace the varistor.
No
Yes
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.
No
Does the unit operate with the remote controller?
Does the OPERATION INDICATOR lamp light up by
pressing the EMERGENCY OPERATION switch?
Yes
No
Turn OFF the
power supply.
Turn OFF the
power supply.
Replace the indoor
electronic control
P.C. board.
Measure the
resistance
between
CN201 1 on
the indoor
electronic control
P.C. board and
N
on the terminal
block with a tester.
Is resistance
approximately 0"?
Replace the fuse (F12).
No
Yes
(∞)
CN201
1
2
L
N
F12
Terminal
block
2
MS-A18/24VD - K1
1
2
3
MS-A18/24VD -
K2
MS-A30VD
The unit does not operate with the remote controller.
OB400C
Also, the OPERATION INDICATOR lamp does not light up by pressing the EMERGENCY OPERATION switch.
Check of indoor electronic control P.C. board
C
17
When OPERATION INDICATOR lamp flashes ON and OFF in every 0.5-second.
OB400C
Outdoor unit does not operate.
How to check mis-wiring
D
• Turn ON the power supply.
• Press EMERGENCY OPERATION switch once.
When the unit has mis-wiring, in 3 minutes,
OPERATION INDICATOR lamp on indoor unit
flash on and off at 0.5 second intervals. w
Make them sure.
1. Turn OFF the power supply and disconnect only terminal block 3 of indoor/ outdoor
connecting wire on indoor side.
2. Short-circuit terminal block N-3 by lead wire.
3. Turn ON the power supply and press EMERGENCY OPERATION switch once.
Yes
Is this mis-wiring, poor contact,
or wire disconnection?
Is there 1V DC detected between both ends
of PS132 on the indoor electronic control P.C.
board ?
However, the stylus of a tester would be
between 0 and 20V.
• Turn OFF the power supply.
• Disconnect the lead wire that terminal
block N-3 is short-circuited.
Connect ON indoor/ outdoor connecting wire.
•
MS-A30VD
Start
No
Yes
w Short circuit of JPG and JPS on the indoor electronic control
P.C. board enables self-check to be displayed in 3 seconds.
No
Replace the indoor electronic
control P.C. board.
Turn ON the power supply.
Is there 220-230-240V AC between L-N
on the outdoor terminal block?
Is there 5V DC between J101 + -J401 - ?
When EMERGENCY OPERATION
is operated, is there 10V DC between both
ends of R601 on the deicer P.C. board?
However the stylus of a tester would be
between 5 ~10V.
Replace the deicer P.C. board.
Yes
Yes
Yes
Refer to outdoor unit service manual .
No
Check the outdoor power supply
and connection of wiring.
No
Replace the deicer P.C. board.
Make the wiring between CN730
No
on the deicer P.C. board and
outdoor terminal block correct.
18
8-6. Test point diagram and voltage
Indoor coil thermistor
(RT12 (main), RT13 (sub))
Room temperature thermistor (RT11)
Temperature (:)
Resistance (k")
OB400C
MS-A18VD MS-A24VD MS-A30VD
Indoor electronic control P.C.board
TYPE 1
Fuse (F11)
T3.5AL250V
PS132
MS-A30VD
w There are 2 types of electronic control P.C. boards
(TYPE1/TYPE2).
They are both compatible with MS-A18/24/30VD.
Varistor (NR11)
Fan motor power supply
220-230-240 VAC(CN211)
Power supply input
}
220-230-240 VAC
5 VDC
}
+
Room temperature
thermistor (RT11)
Indoor coil
thermistor (RT12 (main))
MS-A30VD
Indoor coil
thermistor (RT13 (sub))
CN121
Receiver P.C. board
CN301
To disable “Auto restart function”,
solder the Jumper wire or the
Resistor 220" to the Resistor
JR07. (Refer to 7-3.)
+
}
12 VDC
Vane motor
power supply
(CN151)
Emergency operation
switch
Timer short mode point
(JPS, JPG)
(Refer to 7-1.)
19
+
}
}
Resistance (k
)
+
{
Fan motor power supply
(CN211)
Fuse (F11)
T3.15AL250V
220-230-240 V AC
5 VDC
Indoor coil thermistor
(RT12 (main))
MS-A30VD
Indoor coil thermistor
(RT13 (sub))
Timer short
mode point
(JPS, JPG)
(Refer to 7-1.)
Emergency
operation
switch
CN121
Room temperature
thermistor (RT11)
PS132
MS-A30VD
To disable “Auto restart
function”, solder jumper
wire to JR07.
(Refer to 7-3.)
Vane motor
power supply
(CN151)
12 VDC
Indoor coil thermistor
(RT12 (main), RT13 (sub))
Room temperature thermistor (RT11)
Power supply input
MS-A18VD MS-A24VD MS-A30VD
OB400C
Indoor electronic control P.C.board
TYPE 2
Receiver P.C. board
CN301
20
9
(1) Slide the sleeve and check if there is a locking lever or not. (2) The terminal with this connector has the
locking mechanism.
1Slide the sleeve.
2Pull the terminal while
pushing the locking
lever.
1Hold the sleeve, and
pull out the terminal
slowly.
The terminal which has the locking mechanism can be detached as shown below.
There are two types ( Refer to (1) and (2)) of the terminal with locking mechanism.
The terminal without locking mechanism can be detached by pulling it out.
Check the shape of the terminal before detaching.
<"Terminal with locking mechanism" Detaching points>
Connector
Sleeve
Locking lever
OB400C
DISASSEMBLY INSTRUCTIONS
9-1. MS-A18VD MS-A24VD MS-A30VD
NOTE: Turn OFF power supply before disassembly.
OPERATING PROCEDURE
1. Removing the front panel
(1) Remove the screws caps of the front panel.
Remove the screws.
(2) Pull the panel down to your side slightly and unhook the
catches at the top.
2. Removing the electronic control P.C. board, the receiver
P.C. board and the display P.C. board
(1) Remove the front panel. (Refer to 1.)
(2) Remove the screw of the electrical cover.
Remove the electrical cover.
(3) Remove the screw of the V.A. clamp.
Remove the V.A. clamp.
(4) Remove the screw of the terminal block.
(5) Remove the screw of the ground wire.
(6) Disconnect all the connectors and all the lead wires on the
electronic control P.C. board.
(7) Remove the R.L holder.
(8) Remove the electronic control P.C. board.
(9) Open the R.L holder, remove the receiver P.C. board and
the display P.C. board.
Photo 1
Photo 2
Screws of the ground wire
Screw of
the terminal
block
PHOTOS
Front panel
Screws
R.L
holder
Receiver
P.C.
board
Fan motor
connectors
Vane motor
connector
Indoor
electronic
control
P.C.board
Screw of
the electrical
cover
Screw of the
V.A. clamp
21
OPERATING PROCEDURE PHOTOS
OB400C
3. Removing the electrical box
(1) Remove the front panel. (Refer to 1.)
(2) Remove the electrical cover. (Refer to 2.)
(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 ground wire.
(6) Remove the fan motor lead wire and indoor coil thermistor
from the electrical box.
(7) Remove the lead wire of vane motor from the bottom of
electrical box.
(8) Remove the screw fixing the electrical box, remove the
electrical box.
4. Removing the vane motor
(1) Remove the front panel. (Refer to 1.)
(2) Remove the electrical cover. (Refer to 2.)
(3) Remove the lead wire of vane motor.(Refer to 3.)
(4) Remove the R.L. holder.
(5) Pull out the drain hose from the nozzle assembly, remove
the nozzle assembly.
(6) Remove the screws of the vane motor, disconnect the con-
nector.
(7) Remove the vane motor.
Photo 5
Screws of the
vane motor
Photo 3
Photo 4
Screws of the ground wire
Vane motors
Screw of the
electrical cover
Screw of the
electrical box
Screws
of the
vane
motor
Vane motor
5. Removing the line flow fan and the indoor fan motor
(1) Remove the front panel. (Refer to 1.)
(2) Remove the electrical box. (Refer to 3.)
(3) Pull out the drain hose from the nozzle assembly, remove
the nozzle assembly.
(4) Remove the water cut.
(5) Slide the hole cover, remove the hole cover.
(6) Remove the hexagon socket set screw from the line flow
fan.
(7) Remove the fan motor after removing screws, which fasten
the motor, but be careful not to drop it because of its heavy
weight.
(8) Remove the screws fixing the left side of the heat
exchanger.
(9) Lifting the left side of the heat exchanger.
10
) Remove the line flow fan.
(
Photo 8
Hole
cover
Photo 6
Screws fixing
the left side
of the heat
exchanger
Photo 7
Indoor
coil
thermistor
Water cut
Screws fixing the fan motor
22
PARTS LIST (non-RoHS compliant)10
No. Part No.
Part name
Remarks
Symbol
in Wiring
Diagram
1
2
3
4
5
6
7
8
9
10
E02 527 970
E02 685 234
E02 888 000
E02 408 142
E02 685 067
E02 888 010
E02 685 975
E02 534 100
E02 888 007
INSTALLATION PLATE
BOX
FRONT PANEL ASSEMBLY
CATCH
SCREW CAP
GRILLE
CORNER BOX RIGHT
CATECHIN AIR FILTER
AIR CLEANING FILTER
LAMP PANEL
Including No.4,5,6
4PCS/SET
3PCS/SET
1PCE/SET
MAC-1700FT
Q'ty/unit
1
1
1
4
3
1
1
2
2
1
1
1
1
4
3
1
1
2
2
1
1
1
1
4
3
1
1
2
2
1
1
1
1
4
3
1
1
2
2
1
1
1
1
4
3
1
1
2
2
1
1
1
1
4
3
1
1
2
2
1
MS-A30
VD-
K2
MS-A30
VD-
K1
MS-A24
VD-
K2
MS-A24
VD-
K1
MS-A18
VD-
K2
MS-A18
VD-
K1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
11
12
13
E02 817 620
E02 947 620
E02 890 620
E02 179 667
E02 138 666
E02 A16 666
E02 151 667
E02 527 667
INDOOR HEAT EXCHANGER
INDOOR HEAT EXCHANGER
INDOOR HEAT EXCHANGER
UNION(GAS)
UNION(GAS)
UNION(GAS)
UNION(LIQUID)
UNION(LIQUID)
{12.7
{15.88
{15.88
{6.35
{9.52
OB400C
MS-A18VD MS-A24VD MS-A30VD
10-1. INDOOR UNIT STRUCTURAL PARTS
1
2
3
4
CATCH
5
SCREW
CAP
7
6
8
10-1. INDOOR UNIT STRUCTURAL PARTS
Part number that is circled is not shown in the illustration.
10-2. INDOOR UNIT HEAT EXCHANGER
11
9
(See 10-5.)
12
13
10-2. INDOOR UNIT HEAT EXCHANGER
23
No. Part No.
Part name
Remarks
Symbol
in Wiring
Diagram
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
E02 527 302
E02 408 509
E02 001 504
E02 408 702
E02 527 235
E02 996 235
E02 685 040
E02 685 041
E02 A49 382
E02 817 385
E02 527 034
E02 817 300
E02 527 300
E02 448 303
E02 408 303
E02 528 329
E02 527 468
E02 946 452
E02 A14 452
E02 947 452
E02 A15 452
E02 948 452
E02 A16 452
E02 527 308
E02 817 333
E02 527 333
E02 888 375
E02 814 375
E02 408 311
E02 947 311
E02 527 311
E02 528 034
E02 529 034
E02 408 381
LINE FLOW FAN
BEARING MOUNT
SLEEVE BEARING
DRAIN HOSE
NOZZLE
NOZZLE
VANE UPPER
VANE LOWER
FUSE
VARISTOR
VANE CRANK SET
INDOOR FAN MOTOR ASSEMBLY
INDOOR FAN MOTOR ASSEMBLY
VERTICAL VANE MOTOR
HORIZONTAL VANE MOTOR
DISPLAY P.C. BOARD
RECEIVER P.C. BOARD
ELECTRONIC CONTROL P.C. BOARD w1
ELECTRONIC CONTROL P.C. BOARD w1
ELECTRONIC CONTROL P.C. BOARD w1
ELECTRONIC CONTROL P.C. BOARD w1
ELECTRONIC CONTROL P.C. BOARD w1
ELECTRONIC CONTROL P.C. BOARD w1
ROOM TEMPERATURE THERMISTOR
MOTOR BAND
MOTOR BAND
TERMINAL BLOCK
TERMINAL BLOCK
INDOOR COIL THERMISTOR
INDOOR COIL THERMISTOR
INDOOR COIL THERMISTOR
VANE MOTOR SUPPORT SET (RIGHT)
VANE MOTOR SUPPORT SET (LEFT)
THERMAL FUSE
F11
NR11
MF
MF
MV2
MV1
RT11
TB
TB
RT12
RT12
RT12, RT13
F12
Q'ty/unit
1
1
1
1
1
1
1
1
1
1
1
2
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
2
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
2
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
2
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
2
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
2
1
1
1
1
1
1
1
1
1
1
AUTO RESTART
Including No.15
AUTO RESTART
Including No.15
AUTO RESTART
Including No.15
AUTO RESTART
Including No.15
AUTO RESTART
Including No.15
AUTO RESTART
Including No.15
T3.15AL250V
RIGHT&LEFT
UP&DOWN
RC4V32Including RUBBER MOUNT
RC4V40Including RUBBER MOUNT
MS-A30
VD-
K2
MS-A30
VD-
K1
MS-A24
VD-
K2
MS-A24
VD-
K1
MS-A18
VD-
K2
MS-A18
VD-
K1
w1 Refer to 8-6.
PARTS LIST (non-RoHS compliant)
OB400C
MS-A18VD MS-A24VD MS-A30VD
10-3. INDOOR UNIT FUNCTIONAL PARTS AND ELECTRICAL PARTS
1
2
3
4
5
6
7
10-3. INDOOR UNIT FUNCTIONAL PARTS AND ELECTRICAL PARTS
Part numbers that are circled are not shown in the illustration.
12
10
8
20
11
9
13
24
18
17
14
19
15
16
Air cleaning filter (White bellows type)
Model
Part No.
MAC-1700FT
MS-A18VD -
K1
MS-A18VD - K2
MS-A24VD - K1
MS-A24VD - K2
MS-A30VD - K1
MS-A30VD - K2
1
2
E02 527 426
E02 527 083
REMOTE CONTROLLER
REMOTE CONTROLLER HOLDER
1
1
KM04B
1
1
1
1
1
1
1
1
1
1
No. Part No.
Part name
Remarks
Symbol
in Wiring
Diagram
Q'ty/unit
MS-A30
VD-
K2
MS-A30
VD-
K1
MS-A24
VD-
K2
MS-A24
VD-
K1
MS-A18
VD-
K2
MS-A18
VD-
K1
PARTS LIST (non-RoHS compliant)
OB400C
MS-A18VD MS-A24VD MS-A30VD
10-4. ACCESSORY AND REMOTE CONTROLLER
1 2
10-4. ACCESSORY AND REMOTE CONTROLLER
10-5. AIR CLEANING FILTER
● Normal life of AIR CLEANING FILTER is 4 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.
25
RoHS PARTS LIST (RoHS compliant)11
No. Part No.
Part name
Remarks
Symbol
in Wiring
Diagram
1
2
3
4
5
6
7
8
9
10
RoHS
G
G
G
G
G
G
G
G
G
G
E12 527 970
E12 685 234
E12 888 000
E12 408 142
E12 685 067
E12 888 010
E12 685 975
E12 534 100
E12 888 007
INSTALLATION PLATE
BOX
FRONT PANEL ASSEMBLY
CATCH
SCREW CAP
GRILLE
CORNER BOX RIGHT
CATECHIN AIR FILTER
AIR CLEANING FILTER
LAMP PANEL
Including No.4,5,6
4PCS/SET
3PCS/SET
1PCE/SET
MAC-1700FT
Q'ty/unit
1
1
1
4
3
1
1
2
2
1
1
1
1
4
3
1
1
2
2
1
1
1
1
4
3
1
1
2
2
1
1
1
1
4
3
1
1
2
2
1
1
1
1
4
3
1
1
2
2
1
1
1
1
4
3
1
1
2
2
1
MS-A30
VD-
K2
MS-A30
VD-
K1
MS-A24
VD-
K2
MS-A24
VD-
K1
MS-A18
VD-
K2
MS-A18
VD-
K1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
11
12
13
E12 817 620
E12 947 620
E12 890 620
E12 179 667
E12 138 666
E12 A16 666
E12 151 667
E12 527 667
G
G
G
G
G
G
G
G
INDOOR HEAT EXCHANGER
INDOOR HEAT EXCHANGER
INDOOR HEAT EXCHANGER
UNION(GAS)
UNION(GAS)
UNION(GAS)
UNION(LIQUID)
UNION(LIQUID)
{12.7
{15.88
{15.88
{6.35
{9.52
OB400C
MS-A18VD MS-A24VD MS-A30VD
11-1. INDOOR UNIT STRUCTURAL PARTS
1
2
3
4
CATCH
5
SCREW
CAP
7
6
8
11-1. INDOOR UNIT STRUCTURAL PARTS
Part number that is circled is not shown in the illustration.
11-2. INDOOR UNIT HEAT EXCHANGER
11
9
(See 11-5.)
12
13
11-2. INDOOR UNIT HEAT EXCHANGER
26
RoHS PARTS LIST (RoHS compliant)
OB400C
MS-A18VD MS-A24VD MS-A30VD
11-3. INDOOR UNIT FUNCTIONAL PARTS AND ELECTRICAL PARTS
1
2
20
19
3
4
12
11
5
18
6
17
10
7
13
15
8
14
16
9
11-3. INDOOR UNIT FUNCTIONAL PARTS AND ELECTRICAL PARTS
Part numbers that are circled are not shown in the illustration.
K2
1
1
1
1
1
1
1
1
1
1
1
2
1
1
1
1
1
1
1
1
1
1
Q'ty/unit
MS-A24
K1
VD-
1
1
1
1
1
1
1
1
1
1
1
2
1
1
1
1
1
1
1
1
1
1
1
MS-A24
K2
VD-
1
1
1
1
1
1
1
1
1
1
1
2
1
1
1
1
1
1
1
1
1
1
No. Part No.
RoHS
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
E12 527 302
G
E12 408 509
G
E12 001 504
G
E12 408 702
G
E12 527 235
G
E12 996 235
G
E12 685 040
G
E12 685 041
G
E12 A49 382
G
E12 817 385
G
E12 527 034
G
E12 817 300
G
E12 527 300
G
E12 448 303
G
E12 408 303
G
E12 528 329
G
E12 527 468
G
E12 946 452
G
E12 A14 452
G
E12 947 452
G
E12 A15 452
G
G
E12 948 452
G
E12 A16 452
G
E12 527 308
G
E12 817 333
G
E12 527 333
G
E12 888 375
G
E12 814 375
G
E12 408 311
G
E12 947 311
G
E12 527 311
G
E12 528 034
G
E12 529 034
G
E12 408 381
w1 Refer to 8-6.
Symbol
Part name
in Wiring
Diagram
LINE FLOW FAN
BEARING MOUNT
SLEEVE BEARING
DRAIN HOSE
NOZZLE
NOZZLE
VANE UPPER
VANE LOWER
FUSE
VARISTOR
F11
NR11
VANE CRANK SET
INDOOR FAN MOTOR ASSEMBLY
INDOOR FAN MOTOR ASSEMBLY
VERTICAL VANE MOTOR
HORIZONTAL VANE MOTOR
MF
MF
MV2
MV1
DISPLAY P.C. BOARD
RECEIVER P.C. BOARD
ELECTRONIC CONTROL P.C. BOARD w1
ELECTRONIC CONTROL P.C. BOARD w1
ELECTRONIC CONTROL P.C. BOARD w1
ELECTRONIC CONTROL P.C. BOARD w1
ELECTRONIC CONTROL P.C. BOARD w1
ELECTRONIC CONTROL P.C. BOARD w1
ROOM TEMPERATURE THERMISTOR
RT11
MOTOR BAND
MOTOR BAND
TERMINAL BLOCK
TERMINAL BLOCK
INDOOR COIL THERMISTOR
INDOOR COIL THERMISTOR
INDOOR COIL THERMISTOR
TB
TB
RT12
RT12
RT12, RT13
VANE MOTOR SUPPORT SET (RIGHT)
VANE MOTOR SUPPORT SET (LEFT)
THERMAL FUSE
F12
MS-A18
K1
VD-
1
1
1
1
1
1
1
1
1
1
1
2
1
1
1
1
1
1
1
1
1
1
1
MS-A18
VD-
MS-A30
K1
VD-
1
1
1
1
1
1
1
1
1
1
1
2
1
1
1
1
1
1
1
1
1
1
MS-A30
K2
VD-
1
1
1
1
1
1
1
T3.15AL250V
1
1
1
RC4V32Including RUBBER MOUNT
RC4V40-
1
Including RUBBER MOUNT
RIGHT&LEFT
2
UP&DOWN
1
1
1
AUTO RESTART
Including No.15
AUTO RESTART
Including No.15
AUTO RESTART
Including No.15
AUTO RESTART
Including No.15
AUTO RESTART
Including No.15
AUTO RESTART
1
Including No.15
1
1
1
1
1
1
Remarks
27
Air cleaning filter (White bellows type)
Model
Part No.
MAC-1700FT
MS-A18VD -
K1
MS-A18VD - K2
MS-A24VD - K1
MS-A24VD - K2
MS-A30VD - K1
MS-A30VD - K2
1
2
E12 527 426
E12 527 083
REMOTE CONTROLLER
REMOTE CONTROLLER HOLDER
1
1
KM04B
1
1
1
1
1
1
1
1
1
1
No.
G
G
RoHS
Part No.
Part name
Remarks
Symbol
in Wiring
Diagram
Q'ty/unit
MS-A30
VD-
K2
MS-A30
VD-
K1
MS-A24
VD-
K2
MS-A24
VD-
K1
MS-A18
VD-
K2
MS-A18
VD-
K1
RoHS PARTS LIST (RoHS compliant)
MS-A18VD MS-A24VD MS-A30VD
11-4. ACCESSORY AND REMOTE CONTROLLER
1 2
11-4. ACCESSORY AND REMOTE CONTROLLER
11-5. AIR CLEANING FILTER
● Normal life of AIR CLEANING FILTER is 4 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.
HEAD OFFICE: TOKYO BLDG., 2-7-3, MARUNOUCHI, CHIYODA-KU, TOKYO 100-8310, JAPAN
CC
Copyright 2005 MITSUBISHI ELECTRIC ENGINEERING CO.,LTD
Distributed in Aug. 2011. No.OB400 REVISED EDITION-C
Distributed in May 2006. No.OB400 REVISED EDITION-B 6
Distributed in Nov. 2005. No.OB400 REVISED EDITION-A 6
Distributed in Mar. 2005. No.OB400 106
Made in Japan
New publication, effective Aug. 2011
Specifications subject to change without notice.
Loading...