Mitsubishi Electric MS-A08VD-P1 User manual

SERVICE MANUAL
CONTENTS
1. TECHNICAL CHANGES ····································2
2. PART NAMES AND FUNCTIONS······················3
3. SPECIFICATION·················································4
4. OUTLINES AND DIMENSIONS ·························5
5. WIRING DIAGRAM ············································6
6. REFRIGERANT SYSTEM DIAGRAM················6
7. SERVICE FUNCTIONS ······································7
8. TROUBLESHOOTING········································9
9. DISASSEMBLY INSTRUCTIONS ····················18
10. PARTS LIST······················································20
Wireless type
Models
SPLIT-TYPE, AIR CONDITIONERS
MS-A08VD-
MS-A10VD-
MS-A13VD- P1
P1
P1
TM
No. OB396
Indication of model name
MS-A08VD -
MS-A10VD -
MS-A13VD - P1
P1
P1
NOTE:
• This service manual describes technical data of indoor units.
• As for outdoor units MU-A08VD - ,MU-A10VD - and MU-A13VD - , refer to the service manual OB397.
P1P1P1
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TECHNICAL CHANGES
2
1
MS-07UV - ➔MS-A08VD -
MS-10UV - ➔MS-A10VD -
MS-13UV - ➔MS-A13VD - P1P1
P1P1
P1P1
1. Indoor unit has been changed.
• Front panel has been changed. (Grill ➔ Flat)
• Dimension has been changed. (850Wo278Ho191D ➔815Wo278Ho244D)
2. Easy clean function has been added.
3. Catechin air filter has been added.
4. Air cleaning filter has been added.
5. Fan motor has been changed.
6. Fan motor capacitor has been changed.
7. P.C. board has been changed.
8. Fin pattern of cooler has been changed.
9. Remote controller has been changed.
• OPERATE/STOP(ON/OFF) button and TEMPERATURE buttons have been remodeled to be luminous.
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3
Installation plate
Installation plate fixing screw 4 x 25 mm
Remote controller holder
Fixing screw for 33.5 x 16 mm (Black)
Battery (AAA) for remote controller
Wireless remote controller
Felt tape (Used for left or left-rear piping)
Air cleaning filter
1
5
1
2
2
1
1
2
1
2
3
4
5
6
7
8
MS-A10VD -
MS-A08VD -
P1
P1
MS-A13VD -
P1
ACCESSORIES
PART NAMES AND FUNCTIONS
2
INDOOR UNIT
MS-A08VD -
MS-A10VD -
MS-A13VD - P1
P1
P1
Emergency operation switch
Fan
Air outlet
Vertical vanes
Air inlet
to Breaker
Remote control
receiving section
Display section
Air cleaning filter
(white bellows type)
Catechin air filter
(with deodorizing)
Front panel
Power supply cord
Panel
Horizontal vane
Operation section
(When the front panel is opened)
Remote controller
Operation indicator lamp
Remote control
receiving section
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4
SPECIFICATION
3
Indoor model
Function
Power supply
Air flow
(High/Medw/Loww)
Power outlet
Running current
Power input
Auxiliary heater
Fan motor current
Model
Winding
resistance(at 20:)
Dimensions WOHOD
Weight
Air direction
Sound level (High/Medw/Loww)
Fan speed(High/Medw/Loww)
Fan speed regulator
Thermistor RT11(at 25:)
Thermistor RT12(at 25:)
Remote controller model
K/h
A
A
W
A(kW)
A
"
mm
kg
dB
rpm
k"
k"
630/558w/486w
0.19
40
0.19
RC4V19-HA
WHT-BLK 224
BLK-RED 318
10
42/36w/29w
960/850w/740w
Electrical data
Fan motor
Special remarks
Capacity
630/498w/360w
0.17
35
0.17
RC4V19-JA
WHT-BLK 283
BLK-RED 188
9
39/32w/26w
960/760w/550w
Cooling
Single phase
220-230-240V, 50Hz
10
815O278O244
5
3
10
10
MP04B
MS-A08VD - P1 MS-A10VD - P1 MS-A13VD - P1
NOTE: Test conditions are based on JIS C 9612.
Cooling : Indoor DB27°C / WB19°C
Outdoor DB35°C / WB24°C
Indoor-Outdoor piping length : 5 m
WReference value
REMOTE CONTROLLER
MS-A08VD -
MS-A10VD -
MS-A13VD - P1
P1
P1
ON/OFF
RESET
TOO
WARM
TOO
COOL
ECONO COOL
POWERFUL COOL
SELECT
FAN
VANE
TIMEMODE
I FEEL COOL
DRYFAN
h
Signal transmitting section
Operation display section
TEMPERATURE buttons
VANE CONTROL button
TIME SET button
RESET button
ECONO COOL button
POWERFUL COOL button
OPERATION SELECT button
TIMER MODE SELECT button
OPERATE/STOP (ON/OFF) button
FAN SPEED CONTROL button
Indication of remote controller
model is on back.
These buttons are able to store the light
from nature, fluorescent lamp, etc and
shine in the dark.
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5
OUTLINES AND DIMENSIONS4
Unit : mm
MS-A08VD -
MS-A10VD - P1
P1
INDOOR UNIT
244
242 5
7 or more
90
110
30
149
606
278
60
815
783
Power supply cord
Lead to right 1.0m
Lead to left 0.3m
Air out
Installation plate
Insulation [28
Drain hose [16
(Connected part O,D)
Liquid line [6.35-0.5m
Gas line [9.52-0.43m
Insulation [37 O.D
[21 I.D
{
Wireless remote controller
81.5
81.5
41
2.5
42
271
231.5
4.5
81.5 133.5
326326
Wall hole [65
Indoor unit
Installation plate
57
140
17.5
Air in
MS-A13VD - P1
INDOOR UNIT
244
242
218.5
258
81.581.5
41
42
2.5
17.5
161.5161.5
326326
5
7 or more
90
110
30
149
606
278
60
815
783
Power supply cord
Lead to right 1.0m
Lead to left 0.3m
Air out
Indoor unit
Installation plate
Wall hole [65
Installation plate
Insulation [28
Drain hose [16
(Connected part O,D)
Air in
Liquid line [6.35-0.5m
Gas line [9.52-0.43m
Insulation [37 O.D
[21 I.D
{
Wireless remote controller
57
140
17.5
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6
INDOOR UNIT
Room
temperature
thermistor
Indoor
heat
exchanger
RT11
Indoor coil
thermistor
RT12
Refrigerant pipe
(Option){6.35
(with heat insulator)
Flared
connection
Flared
connection
Refrigerant pipe
(Option){12.7
(with heat insulator)
Refrigerant flow in cooling
REFRIGERANT SYSTEM DIAGRAM
6
MS-A08VD -
MS-A10VD - P1
P1
INDOOR UNIT
Room
temperature
thermistor
Indoor
heat
exchanger
RT11
Indoor coil
thermistor
RT12
Refrigerant pipe
(Option){6.35
(with heat insulator)
Flared
connection
Flared
connection
Refrigerant pipe
(Option){9.52
(with heat insulator)
MS-A13VD - P1 Unit : mm
WIRING DIAGRAM
5
MS-A08VD - MS-A10VD - MS-A13VD - P1P1P1
INDOOR UNIT
GRN
BLU
BRN
GRN/YLW
GRN/YLW
POWER
SUPPLY
CORD
220-230-240V
~/N 50Hz
LD103
F12
BLU
BLU
2
1
BLU
220-230-240V~
5
MV
151
CN
TO OUTDOOR
UNIT
CONNECTING
BRN
L
N
TB
2
BLU
WHT
POWER MONITOR,
RECEIVER
P.C.BOARD
REMOTE
CONTROLLER
2
109
CN
2
SAFETY
DEVICE(FAN)
1R1
CN CN
125
CN201
3
2
1
ELECTRONIC CONTROL P.C. BOARD
3
T11
RED
WHT
NR11
SR141
F11 C11
111
CN
CN
112
3
121
CN
CN211
6
5
BRN
YLW
GRY
BLK
4
3
2
1
MF
RT11
RT12
1
3
5
52C
3
4
SYMBOL
SR141
TB
T11
52C
SYMBOL
MV
NR11
RT11
RT12
SYMBOL
C11
F11
F12
MF
NAME NAME NAME
INDOOR FAN CAPACITOR
FUSE(3.15A)
THERMAL FUSE(93:)
INDOOR FAN MOTOR(INNER FUSE)
VANE MOTOR
VARISTOR
ROOM TEMPERATURE THERMISTOR
INDOOR COIL THERMISTOR
SOLID STATE RELAY
TERMINAL BLOCK
TRANSFORMER
CONTACTOR
MODELS WIRING DIAGRAM
NOTE:1. About the outdoor side 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
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7
SERVICE FUNCTIONS
7
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.
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.
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 bat-
teries and push the
OPERATE/STOP(ON/OFF)button
twice or 3 times at first.
After finish remodelling, put back
the batteries then press the
RESET button.
MS-A08VD -
MS-A10VD -
MS-A13VD - P1
P1
P1
Remote controller model : MP04B
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.
J2
J1
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8
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.
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.
How to release “AUTO RESTART FUNCTION”
1Turn off the main power for the unit.
2Pull out the indoor electronic control P.C. board and the power monitor, receiver
P.C. board. (Refer to 9-1.)
3Solder the Jumper wire to the JR07 on the indoor electronic control P.C.board.
(Refer to 8-6.)
JR07
IC101
CN151
SW1
CN112
CN111
CN201
52C
C11
CN211
CN1V1
CN1R1CN121
7-3. AUTO RESTART FUNCTION
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.
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
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 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.
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9
TROUBLESHOOTING8
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 main unit first with the remote controller, and then after con-
firming 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.
MS-A08VD -
MS-A10VD -
MS-A13VD - P1
P1
P1
Lead wiring Housing point
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 abnormality indication is flashing on and off before starting service work.
2) Before servicing that the connector and terminal are connected properly.
3) 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 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.
Insert the negative pole
of the batteries first.
Check if the polarity of
the batteries are correct. RESET button
2Press the RESET button with tip end of ball point
pen or the like, and then use the remote controller.
NOTE : 1. If the RESET button is not pressed, the remote controller may not operate correctly.
2. This remote controller has a circuit to automatically reset the microcomputer when batteries are replaced.
This function is equipped to prevent the microcomputer from malfunctioning due to the voltage drop caused by
the battery replacement.
1Remove the back lid and insert batteries.
Then reattach the back lid.
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10
5. How to install the horizontal vanes
65 4
32 1
In procedure 2,3,5, and 6, lock the stoppers until they click into place.
Stopper
Lock.
Stopper
Lock.
Lock. Lock. In. Insert.
Insert.
In.
If horizontal vanes are not installed correctly, both of the operation indicator lamps will flash.
In this case, install the horizontal vanes correctly by following the procedures 1to 6.
NOTE: Before installation of the horizontal vanes, disconnect the power supply plug and/ or turn off the breaker.
Upper vane
Lower vane
The holes on the
insertion ends of
the upper and lower
horizontal vanes have
different shapes.
Insert this end first.
Upper right
Lower right
Insert this end first.
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