This product, although classified under the brand MITSUBISHI, may have been manufactured by MITSUBISHI TELECOM after mergers, acquisitions, or a change in name.
Detailed instructions for use are in the User's Guide.
SPLIT-TYPE, AIR CONDITIONERS SPLIT-TYPE, HEAT PUMP AIR CONDITIONERS
HFC
utilized
No. OB329
SERVICE MANUAL
Wireless type Models
R410A
MSC-A07YV MSC-A09YV MSC-A12YV -
E1
(WH) (WH) (WH)
E1
E1
CONTENTS
1. TECHNICAL CHANGES ····································3 2. PART NAMES AND FUNCTIONS······················3 3. SPECIFICATION·················································5 4. NOISE CRITERIA CURVES ·······························6 5. OUTLINES AND DIMENSIONS ·························7 6. WIRING DIAGRAM ············································8 7. REFRIGERANT SYSTEM DIAGRAM ················8 8. MICROPROCESSOR CONTROL ······················9 9. SERVICE FUNCTIONS ····································17 10. TROUBLESHOOTING······································19 11. DISASSEMBLY INSTRUCTIONS·····················26 12. PARTS LIST······················································28
Indication of model name
MSC-A07YV MSC-A09YV MSC-A12YV -
E1 E1 E1
NOTE: ·This manual describes technical data of indoor units. ·As for outdoor units MU-A07/A09/A12YV - E1 , refer to the service manual OB330. ·As for outdoor units MUH-A07/A09/A12YV - E1 , refer to the service manual OB331. ·As for outdoor units MUX-A10/A19/A20/A25/A26WV - E1 , refer to the service manual OB307 REVISED EDITION-A. ·As for outdoor units MUX-A22WV - E1 , refer to the service manual OB318. ·As for outdoor units MXZ-A18/A26/A32WV - E1 , refer to the service manual OB319.
1
TECHNICAL CHANGES
MSC-A07WV- E1 MSC-A07YV- E1 MSC-A09WV- E1 MSC-A09YV- E1 MSC-A12WV- E1 MSC-A12YV- E1
1. Design of front panel has changed. 2. Air filter has changed to the catechin air filter.
2
PART NAMES AND FUNCTIONS
MSC-A07YV - E1 MSC-A09YV - E1 MSC-A12YV - E1 INDOOR UNIT
Air cleaning filter (white bellows type) Front panel Air inlet
Panel Catechin air filter (With deodorizer)
to Breaker Power supply cord Remote control receiving section
Air outlet Vertical vanes Fan Horizontal vane
Remote controller
Operation section (When the front panel is opened)
Display section
Operation indicator lamp Emergency operation switch Remote control receiving section
3
MSC-A07YV- E1 MSC-A09YV- E1 MSC-A12YV- E1 ACCESSORIES
1 Installation plate 2 Installation plate fixing screw 4 o 25 mm 3 Remote controller holder 4 Fixing screw for 3 3.5 o 16 mm 5 Battery (AAA) for remote controller 6 Wireless remote controller 7 Felt tape (Used for left or left-rear piping) 8 Air cleaning filter 1 5 1 2 2 1 1 1
REMOTE CONTROLLER
Signal transmitting section
Operation display section OPERATE /STOP (ON /OFF)button
AM
PM
TOO ON/OFF WARM
TOO COOL
TEMPERATURE buttons
Open the front lid.
Indication of remote controller model is on back.
CLOCK PM
AM
TOO ON/OFF WARM
TOO COOL
FAN SPEED CONTROL button
I FEEL COOL
HEAT /FAN
FAN VANE
DRY
STOP START HR. MIN.
/
MODE
OPERATION SELECT button
ECONO COOL
ECONO COOL button RESET button
RESET CLOCK
OFF-TIMER button ON-TIMER button HR. button MIN. button (TIME SET button) CLOCK SET button VANE CONTROL button
4
3
SPECIFICATION
Indoor model Function Indoor unit power supply MSC-A09YV - E1 MSC-A12YV - E1 MSC-A07YV - E1 Heating Heating Cooling Heating Cooling Cooling Single phase Single phase Single phase 230V,50Hz 230V,50Hz 230V,50Hz 474/372 w/276 w 510/420 w /342w 474/384 w/306w 588/456 w/342w 582/444 w/324w 606/498 w/396w 10 10 10 0.17 0.17 0.19 35 35 40 90 90 92 0.17 0.17 0.19 RC4V19-LA RC4V19-LA RC4V19-KA WHT-BLK 413 WHT-BLK 413 WHT-BLK 316 BLK-RED 334 BLK-RED 334 BLK-RED 299 815O278O244 815O278O244 815O278O244 9 9 10 5 5 5 36/31w /25 w 36/31 w /25 w 36/31w /25 w 39/32w/25 w 40/33w/26 w 39/33w/26 w 900/750w/600 w 950/820 w /700 w 900/770w/650w 1,050/870w/700w 930/760w/600w 960/830w/700 w 3 3 3 10 10 10 10 10 10 KP1A or KG3A KP1A or KG3A KP1A or KG3A
Capacity Air flow(High/Med.w/Low w) Power outlet Running current Power input Power factor Fan motor current Model Winding resistance(at 20:) Dimensions WOHOD Weight Air direction Sound level(High/Med.w/Loww ) Fan speed(High/Med.w/Loww ) Fan speed regulator Thermistor RT11(at 25:) Thermistor RT12(at 25:) Remote controller model Fan motor Electrical data Special remarks
K /h A A W % A " mm kg dB rpm k" k"
NOTE: 1. Test conditions are based on ISO 5151. Cooling : Indoor DB27°C WB19°C Heating : Indoor DB20°C Outdoor DB35°C WB24°C OutdoorDB 7°C/WB 6°C Indoor-Outdoor piping length 5m 2.Remote controller model KP1A and KG3A are the same in terms of specification. W Reference value
5
4
NOISE CRITERIA CURVES
E1
FAN SPEED FUNCTION High COOL HEAT SPL(dB(A)) 36 LINE
MSC-A07YV-
MSC-A09YV-
E1
FAN SPEED FUNCTION High COOL HEAT
SPL(dB(A)) 36 39
LINE
Test conditions, Cooling : DB27: Heating : DB20:
90
WB19: WB -:
90
Test conditions. Cooling : DB27: Heating : DB20:
WB19: WB -:
OCTAVE BAND SOUND PRESSURE LEVEL, dB re 0.0002 MICRO BAR
70
NC-70
OCTAVE BAND SOUND PRESSURE LEVEL, dB re 0.0002 MICRO BAR
80
80
70
NC-70
60
NC-60
60
NC-60
50
NC-50
50
NC-50
40
NC-40
40
NC-40
30
NC-30
30
NC-30
20
APPROXIMATE TERESHOLD OF HEARING FOR CONTINUOUS NOISE
20
NC-20
APPROXIMATE TERESHOLD OF HEARING FOR CONTINUOUS NOISE
NC-20
10 63 125 250 500 1000 2000 4000 8000
BAND CENTER FREQUENCIES, Hz
10 63 125 250 500 1000 2000 4000 8000
BAND CENTER FREQUENCIES, Hz
MSC-A12YV-
E1
FAN SPEED FUNCTION High COOL HEAT
SPL(dB(A)) 40 39
LINE
Test conditions, Cooling : DB27:
90
WB19:
OCTAVE BAND SOUND PRESSURE LEVEL, dB re 0.0002 MICRO BAR
80
70
NC-70
60
NC-60
50
NC-50
40
NC-40
INDOORUNIT WALL 1m
NC-30
30
0.8m
20
APPROXIMATE TERESHOLD OF HEARING FOR CONTINUOUS NOISE
NC-20
10 63 125 250 500 1000 2000 4000 8000
BAND CENTER FREQUENCIES, Hz
MICROPHONE
6
5
OUTLINES AND DIMENSIONS
Unit: mm
INDOOR UNIT
Installation plate 231.5 2.5 41 81.5 326 326 81.5 242 7 or more 5 Air in Indoor unit 783 42
Wall hole [65 815 Installation plate
278
{
90 110 244
Liquid line [6.35-0.5m Gas line [9.52-0.43m Insulation [37 O.D [21 I.D Drain hose [16 (Connected part O,D) Insulation [28
58 162
19
Power supply cord Lead to right 1.0m Lead to left 0.3m
Air out
Wireless remote controller
MSC-A12YV - E1 INDOOR UNIT
Installation plate 218.5 41 2.5 326 326 81.5 242 7 or more 5 Installation plate Air in
783
Indoor unit
81.5
Wall hole [65 815
278
{
90 110 244
Liquid line [6.35-0.5m Gas line [9.52-0.43m Insulation [37 O.D [21 I.D
30
60
606
149
58 162
19
Power supply cord Lead to right 1.0m Lead to left 0.3m
Air out
Drain hose [16 (Connected part O,D) Insulation [28
Wireless remote controller
7
42
258
17.5
161.5
30
60
606
149
161.5
271
4.5
MSC-A07YV - E1 MSC-A09YV - E1
81.5
133.5
6
WIRING DIAGRAM
MSC-A09YV - E1 MSC-A12YV - E1 MODELS WIRING DIAGRAM
BRN RED BLU WHT BLK
CN LD103 151
MSC-A07YV - E1 INDOOR UNIT
TO OUTDOOR TB UNIT L CONNECTING BRN FOR 3 MUH OR MXZ TYPE N 12V FOR MU OR MUX TYPE 12V POWER SUPPLY CORD ~/N 230V 50Hz 2 1 BLU
TAB12 CN201 3 2 1 CN202 2 1
CN 101
CN 112
RT12 RT11 3
BLK GRY YLW BRN WHT RED
T11 NR11
CN 111
CN 121
C11 F11 SR141
1 3 5
1 2 3 MF 4 5 6
CN211 ELECTRONIC CONTROL P.C. BOARD
GRN
5
5
POWER MONITOR, RECEIVER P.C.BOARD
REMOTE CONTROLLER
GRN/YLW
PE
MV
CIRCUIT BREAKER SYMBOL C11 F11 MF MV NAME
SYMBOL NR11 RT11 RT12 SR141 VARISTOR
NAME ROOM TEMPERATURE THERMISTOR INDOOR COIL THERMISTOR SOLID STATE RELAY
SYMBOL TB T11
NAME TERMINAL BLOCK TRANSFORMER
INDOOR FAN CAPACITOR FUSE(3.15A) INDOOR FAN MOTOR (INNER FUSE) VANE MOTOR
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
7
REFRIGERANT SYSTEM DIAGRAM
MSC-A09YV - E1
Refrigerant pipe [9.52 (with heat insulator)
MSC-A07YV - E1 INDOOR UNIT
MSC-A12YV - E1 INDOOR UNIT
Unit:mm Refrigerant pipe [12.7 (with heat insulator)
Indoor heat exchanger
Indoor coil thermistor RT12 Flared connection
Indoor heat exchanger
Indoor coil thermistor RT12 Flared connection
Room temperature thermistor RT11
Room temperature thermistor RT11
Flared connection
Flared connection
Refrigerant flow in cooling
Refrigerant pipe [6.35 (with heat insulator) 8
Refrigerant flow in cooling
Refrigerant pipe [6.35 (with heat insulator)
8
MICROPROCESSOR CONTROL
MSC-A07YV - E1 MSC-A09YV - E1 MSC-A12YV - E1
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.
WIRELESS REMOTE CONTROLLER
Signal transmitting section
INDOOR UNIT DISPLAY SECTION
Operation Indicator lamp The operation indicator at the right side of the indoor unit indicates the operation state.
Operation display section OPERATE /STOP (ON /OFF)button
AM
PM
· The following indication does not depend on the shape of lamp.
TOO ON/OFF WARM
TOO COOL
Operation Indicator
TEMPERATURE buttons
lighted not lighted
Open the front lid.
Indication
Operation state
Difference between target temperature and room temperature
CLOCK PM
AM
TOO ON/OFF WARM
TOO COOL
FAN SPEED CONTROL button
I FEEL COOL
HEAT /FAN
FAN VANE
DRY
STOP START HR. MIN.
/
MODE
OPERATION SELECT button
ECONO COOL
ECONO COOL button RESET button
RESET CLOCK
OFF-TIMER button ON-TIMER button HR. button MIN. button (TIME SET button) CLOCK SET button VANE CONTROL button
This shows that the air conditioner is operating to reach the target temperature. Please wait until the target temperature is obtained. This shows that the room temperature is approaching the target temperature.
Approx. 2 : or more
Approx. 2 : or less
8-1. COOL (
) OPERATION
(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 TEMPERATURE buttons (TOO WARM or TOO COOL button)to select the desired temperature. The setting range is 16 ~ 31°C Difference between room temperature and set tem1. Thermostat control perature during operation Thermostat is ON or OFF by difference between room temperature and set temperature Initial temperature difference Thermostat Room temperature minus set temperature : 0.3 : or more················································ON Room temperature minus set temperature : less than -0.3 :············································OFF Set temperature
-0.3 : 0.3 :
2. Indoor fan speed control Indoor fan operates continuously at the set speed by FAN SPEED CONTROL button regardless of thermostat's OFF-ON. Difference between room In Auto the fan speed is as follows. temperature and set temFan speed Initial temperature difference perature during operation Room temperature minus set temperature : 1.7 degrees or more·······························High Room temperature minus set temperature : Between 1 and 1.7 degrees···················Med. 3 deg. Room temperature minus set temperature : less than 1 degree··································Low
1 deg. 1.7 deg.
9
3. Coil frost prevention x Temperature control When the indoor coil thermistor RT12 reads 4°C or below(MSC-A07/A09YV) / 0°C or below(MSC-A12YV) for 5 minutes, the coil frost prevention mode starts. The indoor fan operates at the set speed and the compressor stops for 5 minutes. After that, if RT12 still reads below 4°C (MSC-A07/A09YV) / 0°C (MSC-A12YV), this mode is prolonged until the RT12 reads over 4°C (MSC-A07/A09YV) / 0°C (MSC-A12YV). y Time control When the three conditions as follows have been satisfied for 1 hour and 45 minutes, the compressor stops for 3 minutes. The indoor fan operates at the set speed. a. Compressor has been continuously operating. b. Indoor fan speed is Low or Med. c. Room temperature is below 26°C. When compressor stops, the accumulated time is cancelled. When compressor restarts, time counting starts from the beginning. Time counting also stops temporarily when the indoor fan speed becomes High or the room temperature exceeds 26°C. However, when two of the above conditions (b.and c.) are satisfied again, time accumulation is resumed. Operation chart Example ON Compressor Outdoor fan OFF OFF ON
Indoor fan
ON ( continuously at set speed)
Set temperature and : initial room temperature in dry mode 35 30 Set temperature 25 20 15
8-2. 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. DRY operation will not function when the room temperature is 13°C or below. (4) When DRY operation functions the fan speed is lower than COOL operation except at (fan speed) Low.
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.
10 10
15 20 25 30 Initial room temperature
35 :
Difference between room temperature and set tem1. Thermostat control perature during operation Thermostat is ON or OFF by difference between room temperature and set temperature. Initial temperature difference Thermostat Set temperature Room temperature minus set temperature : 0.3 : or more················································ON Room temperature minus set temperature : less than -0.3 :············································OFF -0.3 : 0.3 : 2. Indoor fan speed control Indoor fan operates at the set speed by FAN SPEED CONTROL button. In Auto fan speed becomes Low. 3. The operation of the compressor and indoor / outdoor fan Compressor operates by room temperature control and time control. Indoor fan and outdoor fan operate in the same cycle as the compressor. q 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. q 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. 10
Operation time chart Example Thermostat OFF
ON OFF
ON
ON Indoor fan OFF ON Outdoor fan Compressor OFF 8 min. OFF OFF
ON OFF ON OFF
ON
ON
3 min. 4 min.
1 min.
4. Coil frost prevention The operation is as same as coil frost prevention during COOL operation.(Refer to 8-1.3.) However when coil frost prevention works while the indoor fan is OFF, its speed becomes set speed.
8-3. FAN (
) OPERATION
(1) Press OPERATE/STOP(ON/OFF) button. OPERATION INDICATOR lamp of the indoor unit turns on with a beep tone. (2) Select FAN mode with the OPERATION SELECT button. (3) Select the desired fan speed. When AUTO, it becomes Low. Only indoor fan operates. Outdoor unit does not operate.
8-4. HEAT (
) OPERATION
(1) Press OPERATE/STOP(ON/OFF) button. OPERATION INDICATOR lamp of the indoor unit turns on with a beep tone. (2) Select HEAT mode with the OPERATION SELECT button. (3) Press TEMPERATURE buttons (TOO WARM or TOO COOL button) to select the desired temperature. The setting range is 16 ~ 31°C. Difference between room temperature and set tem1. Thermostat control perature during operation Thermostat is ON or OFF by difference between room temperature and set temperature. Set temperature Initial temperature difference Thermostat -0.3 deg. Room temperature minus set temperature : less than -0.3 :··············································ON Room temperature minus set temperature : 0.3 : or more·················································OFF
0.3 deg.
2. Indoor fan speed control (1) Indoor fan operates at the set speed by FAN SPEED CONTROL button. In Auto the fan speed is as follows. Fan speed Initial temperature difference Set temperature minus room temperature: 1.7 degrees or more·············································· High Set temperature minus room temperature: Between 1 and 1.7 degrees ·································· Med. Set temperature minus room temperature: less than 1 degree················································· Low
Difference between room temperature and set temperature during operation
3 deg. 1 deg. 1.7 deg.
(2) Cold air prevention control 1 When the compressor is not operating, (1) if the temperature of indoor coil thermistor RT12 is 0°C or less, the fan stops. (2) if the temperature of indoor coil thermistor RT12 is more than 0°C, the fan operates at Very Low. 2 When the compressor is operating, (1) if the temperature of RT12 is 22°C or more, the fan operates at set speed. (2) if the temperature of RT12 is less than 22°C and (1) if the temperature of room temperature thermistor RT11 is 15°C or less, the fan stops. (2) if the temperature of room temperature thermistor RT11 is more than 15°C, the fan operates at Very Low.
Released Cold Air Prevention Fan speed Set speed Very Low or stop
18: 22:
NOTE : If the temperature of RT12 reads from 18°C to 22°C at the air conditioner stating and also after defrosting, this control works. 11
(3) Warm air control. When the following any condition of 1 (a. ~ c.) and the condition of 2 are satisfied at the same time, warm air control works. 1 a.) When outdoor unit starts operating in HEAT mode. b.) When cold air prevention has been released. c.) When defrosting has been finished 2 When the temperature of indoor coil thermistor RT12 is less than 37°C. When warm air control works, the fan speed changes as follows to blow out warm air gradually. Gradation of fan speed in initial
If this document matches the user guide, instructions manual or user manual, feature sets, schematics you are looking for, download it now. Diplodocs provides you a fast and easy access to the user manual MITSUBISHI MSC-A09YV.
MITSUBISHI offer a product for which we do not have the user manual? Let us know what you are looking for: user guide, owner's manual, online manual, operating instructions, quick start guide, mounting instructions, schematics, service manual, installation instructions, RTFM.
Diplodocs allows you to download user manual MITSUBISHI MSC-A09YV, user guide MITSUBISHI MSC-A09YV, instructions MITSUBISHI MSC-A09YV, owner's manual MITSUBISHI MSC-A09YV, online manual MITSUBISHI MSC-A09YV.