Mitsubishi Electric MU-A08VD-P1 User manual

SERVICE MANUAL
CONTENTS
1. TECHNICAL CHANGES ····································2
2. PART NAMES AND FUNCTIONS······················2
3. SPECIFICATION·················································3
4. OUTLINES AND DIMENSIONS ·························4
5. WIRING DIAGRAM ············································4
6. REFRIGERANT SYSTEM DIAGRAM················5
7. PERFORMANCE CURVES································6
8. TROUBLESHOOTING········································8
9. DISASSEMBLY INSTRUCTIONS·····················11
10. PARTS LIST······················································16
11. OPTIONAL PARTS···········································18
Wireless type
Models
SPLIT-TYPE, AIR CONDITIONERS
MU-A08VD-
MU-A10VD-
MU-A13VD- P1
P1
P1
TM
No. OB397
MU-A08VD -
MU-A10VD -
MU-A13VD - P1
P1
P1
Indication of
model name
NOTE:
• This service manual describes technical data of outdoor units.
• As for indoor units MS-A08VD - ,MS-A10VD - and MS-A13VD - , refer to the service manual OB396.
P1P1P1
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2
PART NAMES AND FUNCTIONS
2
TECHNICAL CHANGES1
MU-07UV - ➔MU-A08VD -
1. Outdoor unit model has been changed.
•Dimension has been changed. (780Wo540Ho255D ➔800Wo550Ho285D)
•Valve bed has been added.
2. Compressor has been changed. (RH135VGCC ➔RH135VHCC)
3. Outdoor fan motor has been changed. (RA6V23-HA ➔RA6V21-AC)
4. Outdoor fan motor capacitor has been changed.
5. Compressor capacitor has been changed.
MU-10UV - ➔MU-A10VD -
1. Outdoor unit model has been changed.
•Dimension has been changed. (780Wo540Ho255D ➔800Wo550Ho285D)
•Valve bed has been added.
2. Compressor has been changed. (RH165VGCC ➔RH145VHCC)
3. Outdoor fan motor has been changed. (RA6V23-HA ➔RA6V21-AC)
4. Outdoor fan motor capacitor has been changed.
5. Compressor capacitor has been changed.
MU-13UV - ➔MU-A13VD -
1. Outdoor unit model has been changed.
•Dimension has been changed. (780Wo540Ho255D ➔800Wo550Ho285D)
•Valve bed has been added.
2. Compressor has been changed. (RH231VHAC ➔RH207VHAC)
3. Outdoor fan motor has been changed. (RA6V33-FA ➔RA6V33-KA)
4. Outdoor fan motor capacitor has been changed.
5. Compressor capacitor has been changed.
P1P1
P1P1
P1P1
OUTDOOR UNIT
MU-A08VD -
MU-A10VD -
MU-A13VD - P1
P1
P1
Air inlet
Piping
Drain hose
Air outlet
Drain outlet
(back )
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3
SPECIFICATION
3
Outdoor model
Function
Power supply
Coefficient of performance (C.O.P)
Capacity
Dehumidification
Air flow
Starting current
Compressor motor current
Fan motor current
Model
Output
Winding
resistance (at20:)
Model
Winding
resistance (at20:)
Dimensions WOHOD
Weight
Sound level
Fan speed
Fan speed regulator
Refrigerant filling
capacity (R22)
Refrigeration oil (Model)
kW
R/h
K/h
A
A
A
W
"
"
mm
kg
dB
rpm
kg
cc
MU-A13VD - P1
3.7-3.7-3.7
1.7
1848-1872-1896
28-29.5-31
4.53-4.52-4.51
0.33-0.34-0.35
3.36-3.36-3.36
RH207VHAC
1000
C-R 2.59
C-S 3.94
RA6V33-KA
WHT-BLK 215
BLK-RED 307
36
47-47-48
835-845-855
1.05
520 (MS56)
Electrical data
Fan motor
Special remarks Compressor
Capacity
MU-A08VD - P1
2.3-2.3-2.3
1.0
17-18-19
2.85-2.85-2.84
3.24-3.24-3.24
RH135VHCC
650
C-R 4.18
C-S 5.76
MU-A10VD - P1
2.75-2.75-2.75
1.2
18-19-20
3.22-3.22-3.21
3.46-3.46-3.46
RH145VHCC
700
C-R 4.03
C-S 5.71
1740-1800-1860
0.24-0.25-0.25
RA6V21-AC
WHT-BLK 347
BLK-RED 281
31
44-45-46
725-745-770
0.55
300 (MS56)
Cooling
Single phase
220-230-240V, 50Hz
800o550o285
1
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
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WIRING DIAGRAM
5
OUTDOOR UNIT
220-230-240V~
N
2
TB
C2
C1
BLU
WHT
RED
WHT
BLU
WHT
BLK
RED
TO INDDOR UNIT CONNECTING
C
R
SMC
1
3
2BLK
RED
WHT MF
MU-A08VD -
MU-A10VD -
MU-A13VD - P1
P1
P1
SYMBOL
C1
C2
SYMBOL
MC
MF
SYMBOL
TB
NAME NAME NAME
COMPRESSOR CAPACITOR
OUTDOOR FAN CAPACITOR
COMPRESSOR (INNER PROTECTOR)
OUTDOOR FAN MOTOR (INNER FUSE )
TERMINAL BLOCK
MODEL WIRING DIAGRAM
4
OUTLINES AND DIMENSIONS4
Unit : mm
OUTDOOR UNIT
MU-A08VD -
MU-A10VD -
MU-A13VD - P1
P1
P1
10
69
800
302.5
500 Bolt pitch for installation
150
22.3
Handle
550
280
164.5
99.5
170.5
23 Service panel
Service port
285
344.5
44
400
Air in
Air out
Air in
17.5
Bolt pitch for
installation
304~325
40
Liquid refrigerant pipe joint
Refrigerant pipe (flared) [6.35
Gas refrigerant pipe joint
Refrigerant pipe (flared) [9.52 (MU-A08/A10VD)
Refrigerant pipe (flared) [12.7 (MU-A13VD)
43-
35-
2 holes 10X21
REQUIRED SPACE Basically open 100mm or more
without any obstruction in front
and on both sides of the unit.
350mm or more
200mm or more
100mm or more
100mm or more
Open two sides of left,
right, or rear side.
Drain hole [42
NOTE:1. About the indoor side electric wiring refer to the indoor 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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5
REFRIGERANT SYSTEM DIAGRAM
6
OUTDOOR UNIT
Capillary tube
{3.0 x {1.6x650
Stop valve
(with service port)
Stop valve
Compressor Strainer
#100
Outdoor heat
exchanger
Refrigerant pipe
(Option){6.35
(with heat insulator)
Refrigerant pipe
(Option){12.7
(with heat insulator)
Flared
connection
Flared
connection
Refrigerant flow in cooling
MU-A08VD -
MU-A10VD - P1
P1
OUTDOOR UNIT
Refri
g
erant flow in coolin
g
Capillary tube
{3.0 x {1.6 x 850
Compressor
Stop valve
(with service port)
Stop valve
Strainer
#100
Outdoor
heat
exchanger
Refrigerant pipe
(Option){6.35
(with heat insulator)
Refrigerant pipe
(Option){9.52
(with heat insulator)
Flared
connection
Flared
connection
Unit : mm
MU-A13VD - P1
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6
MAX.REFRIGERANT PIPING LENGTH
Model Piping size O.D : mm
Refrigerant piping : m
Gas
{9.52
{12.7
Liquid
{6.35
20
20
10
10
MU-A08VD - P1
MU-A10VD - P1
MU-A13VD - P1
Max. length
AMax. height B
Indoor
unit
w Max. Height
B
Outdoor unit
Refrigerant Piping
Max. Length
A
MAX.HEIGHT DIFFERENCE
ADDITIONAL REFRIGERANT CHARGE(R22 : g)
NOTE : Calculation : Xg=15g/m ✕ (Refrigerant piping length (m)-7)
Model Outdoor unit precharged Refrigerant piping length (one way)
15m
120
120
20m
195
195
7m
0
0
10m
45
45
550
1050
MU-A08VD - P1
MU-A10VD - P1
MU-A13VD - P1
PERFORMANCE CURVES7
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
198 ~ 264V, 50Hz
(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/dry-bulb temperature difference on the left side of the chart on next page shows the difference between the
indoor intake air wet/dry-bulb temperature and the indoor outlet air wet/dry-bulb temperature for your reference at service.
MU-A08VD -
MU-A10VD -
MU-A13VD - P1
P1
P1
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7
1Both indoor and outdoor units are under the same temperature/humidity condition.
OUTDOOR LOW PRESSURE AND OUTDOOR UNIT CURRENT
COOL operation
2Air flow should be set at MAX.
Dry-bulb temperature (:)Relative humidity (%)
20 50
25 60
30 70
3The unit of pressure has been changed to MPa on the international system of units(SI unit system).
The conversion factor is : 1(MPa [Gauge]) =10.2(kgf/ff[Gauge])
Indoor intake air WB temperature (:)
Outdoor intake air DB temperature (:)
Indoor intake air WB temperature (:)
Outdoor intake air DB temperature (:)
MS-A10VD - P1
MS-A13VD - P1
MU-A10VD - P1
MS-A08VD - P1
MU-A08VD - P1
MU-A13VD - P1
4.8
4.3
5.4
7.0
6.5
5.9
7.5
6.7
8.4
11.2
10.2
9.3
Wet-and dry-bulb
thermometers
Wet and dry-bulb
thermometers
How to measure the indoor air wet/dry-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 wet and dry-bulb thermometers to the outdoor air intake.
Cover the thermometers to prevent direct rays of the sun.
3. Check that the air filter is cleaned.
4. Open windows and doors of the room.
5. Press the EMERGENCY OPERATION switch once to start the EMERGENCY COOL MODE.
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.
INDOOR UNIT OUTDOOR UNIT
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8
15 20
50 25 60 30 70 35(:) (%)
0.4
0.5
0.6
0.7
0.8
220V
4.0
5.0
6.0
7.0
8.0
9.0 0.9
15 20
50 25 60 30 70 35(:)
(%)
2.0
2.5
3.0
3.5
4.0
220V
MU-A08VD -
MU-A10VD - P1
P1
MU-A08VD -
MU-A10VD - P1
P1
Outdoor low pressure
Outdoor unit current (A)
(kgf/F[Gauge])(MPa [Gauge])
Ambient temperature (˚C)/Ambient humidity (%) Ambient temperature (˚C)/Ambient humidity (%)
15 20
50 25 60 30 70 35(:) (%)
0.3
0.4
0.5
0.6
0.7
15 20
50 25 60 30 70 35(:) (%)
3
4
5
6
7.0
6.0
5.0
4.0
3.0
220V 220V
Ambient temperature (˚C)/Ambient humidity (%)
Outdoor low pressure
Ambient temperature (˚C)/Ambient humidity (%)
Outdoor unit current (A)
MU-A13VD - P1 MU-A13VD - P1
(kgf/F[Gauge])(MPa [Gauge])
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.
MU-A08VD - MU-A10VD - MU-A13VD - P1P1P1
Lead wiring Housing point
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9
Start
Indoor unit
operates.
Outdoor unit
doesn't
operate.
Indoor unit
doesn't 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.
Outdoor unit
doesn't
operate
even in
Test Run
operation.
Indoor unit
operates, when
the EMERGENCY
OPERATION
switch is pressed.
Indoor unit
doesn't operate,
when the
EMERGENCY
OPERATION
switch is pressed.
Check room
temperature
thermistor.
Refer to
"Test point
diagram and
voltage".
Check of 5.
wiring
diagram
of outdoor
unit.
Refer to
"Check of
remote controller
and receiver
P.C. board".
Left lamp
2-time flash
Cause:
Indoor unit
• Trouble of room
temperature/
indoor coil
thermistor
Left lamp
3-time flash
Cause:
Indoor unit
• Trouble of
indoor fan
motor
Check room
temperature
thermistor and
indoor coil thermistor.
Refer to
"Test point diagram
and voltage".
Refer to
"Check of
indoor fan
motor".
1. Check indoor /
outdoor
connecting wire.
2. Refer to
"Check of indoor
electronic control
P.C. board".
Left lamp
4-time flash
Cause:
Indoor unit
• Trouble of
indoor control
system
Replace the
indoor
electronic
control P.C.
board.
As for indoor unit,
refer to service
manual OB396.
Both lamps
(Left and right)
Flash on and off at
0.5-second intervals
Cause:
Indoor unit
• The horizontal vanes
are not installed
correctly.
Refer to "Check of
installation of the
horizontal vane".
8-2. Instruction of troubleshooting
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10
Outdoor fan
motor (MF)
INNER FUSE
149i 3:OPEN
Measure the resistance between the terminals with a tester.
(Coil wiring temperature -10°C ~ 40°C)
Color of
lead wire Normal Abnormal
Open or
short-circuit
WHT-BLK
BLK-RED 189 ~ 233 "
270 ~ 332 "
MU-A13VD
305 ~ 374 "
247 ~ 304 "
MU-A08/A10VD
WHT
RED
BLK
AUX.
MAIN
FUSE
Compressor
(MC)
INNER
PROTECTOR
MU-A08/A10VD
150i 5:OPEN
90i10:CLOSE
MU-A13VD
155i 5:OPEN
90i10:CLOSE
8-3. Trouble criterion of main parts
Part name Check method and criterion
Measure the resistance between the terminals with a tester.
(Coil wiring temperature -10°C ~ 40°C)
Figure
RED
WHT
BLK
P
C
S R
Color of
lead wire
Normal MU-A13VD
2.0 ~ 2.8 "
3.0 ~ 4.25 "
C-R
C-S
Abnormal
Open or
short-circuit
MU-A08VD
3.0 ~ 4.51 "
5.0 ~ 6.22 "
MU-A10VD
3.0 ~ 4.35 "
5.0 ~ 6.16 "
PP:INNER PROTECTOR
MU-A08VD -
MU-A10VD -
MU-A13VD - P1
P1
P1
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