Mitsubishi Electric MU-A07YV-E1 Service Manual Download | Manualshive

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SERVICE MANUAL

CONTENTS

1. TECHNICAL CHANGES ····································2
2. PART NAMES AND FUNCTIONS······················5
3. SPECIFICATION·················································5
4. NOISE CRITERIA CURVES ·······························6
5. OUTLINES AND DIMENSIONS ·························7
6. WIRING DIAGRAM ············································7
7. REFRIGERANT SYSTEM DIAGRAM ················8
8. PERFORMANCE CURVES ······························10
9. TROUBLESHOOTING······································18

10. DISASSEMBLY INSTRUCTIONS·····················21
11. PARTS LIST······················································24

Wireless type
Models

MU-A07YV -
MU-A09YV -
MU-A12YV -

E1

E1

E1

MU-A07YV -

MU-A09YV -
MU-A12YV -

E1

E1

E1

No. OB330

HFC

utilized

R410A

SPLIT-TYPE, AIR CONDITIONERS

Indication of
model name

NOTE:
•This manual describes technical data of outdoor units.
•As for indoor units MSC-A07/A09/A12YV -

, refer to the service manual OB329.

E1

OB330-1.qxp 03.12.3 1:18 PM Page 1

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Summary of Contents for MU-A07YV-E1

Page 1: ... PERFORMANCE CURVES 10 9 TROUBLESHOOTING 18 10 DISASSEMBLY INSTRUCTIONS 21 11 PARTS LIST 24 Wireless type Models MU A07YV MU A09YV MU A12YV E1 E1 E1 MU A07YV MU A09YV MU A12YV E1 E1 E1 No OB330 HFC utilized R410A SPLIT TYPE AIR CONDITIONERS Indication of model name NOTE This manual describes technical data of outdoor units As for indoor units MSC A07 A09 A12YV refer to the service manual OB329 E1 ...

Page 2: ...re not to allow water and other contaminations to enter the R410A refrigerant during storage and installation since it is more susceptible to contaminations than R22 3 For refrigerant piping use clean pressure proof parts materials specifically designed for R410A Refer to 2 Refrigerant piping 4 Composition change may occur in R410A since it is a mixed refrigerant When charging charge liquid refrig...

Page 3: ... cylinder because the refrigerant bubbles due to high pressure and high speed vaporization No No No Yes Yes New New New Gauge manifold Charge hose Torque wrench Flare tool Flare gauge Vacuum pump adapter Electronic scale for refrigerant charging No Not Substitutable for R410A Yes Substitutable for R410A No 12 7 mm 1 Tools dedicated for the air conditioner with R410A refrigerant The following tools...

Page 4: ...ith indoor unit to the flare and the union seat surfaces 4 Air purge Do not discharge the refrigerant into the atmosphere Take care not to discharge refrigerant into the atmosphere during installation reinstallation or repairs to the refrigerant circuit Use the vacuum pump for air purging for the purpose of environmental protection 5 Additional charge For additional charging charge the refrigerant...

Page 5: ... 230V 50Hz 10 2 78 0 22 RN092VHSHT 600 C R 3 87 C S 6 14 RC6V20 AC WHT BLK 410 BLK RED 433 780o540o255 34 45 735 1 0 60 350 NEO22 2 3 0 9 1 686 3 00 680 98 23 3 22 MU A09YV E1 Single phase 230V 50Hz 10 RN099VHSHT 700 C R 3 40 C S 4 56 RC6V20 AC WHT BLK 410 BLK RED 433 780o540o255 34 45 735 1 0 60 350 NEO22 2 55 1 1 1 686 3 32 760 99 24 3 10 0 22 3 21 MU A12YV E1 Single phase 230V 50Hz 1 7 1 914 10...

Page 6: ...ER FREQUENCIES Hz Test conditions Cooling DB35 WB24 MU A12YV E1 COOL FUNCTION 49 SPL dB A LINE OUTDOORUNIT MICROPHONE 1m 90 80 70 60 50 40 30 20 10 63 125 250 500 1000 2000 4000 8000 APPROXIMATE TERESHOLD OF HEARING FOR CONTINUOUS NOISE NC 60 NC 50 NC 40 NC 30 NC 20 NC 70 OCTAVE BAND SOUND PRESSURE LEVEL dB re 0 0002 MICRO BAR BAND CENTER FREQUENCIES Hz Test conditions Cooling DB27 WB19 MU A07YV E...

Page 7: ...PRESSOR CONTACTOR OUTDOOR FAN MOTOR INNER FUSE INNER PROTECTOR 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 320 25 4 3 3 5 155 90 104 74 260 10 780 500 122 40 540 320 285 255 Service panel Gas refrigerant pipe joint Refrigerant pipe flared 9...

Page 8: ...cooling Unit mm Refrigerant pipe 12 7 with heat insulator Stop valve with service port Stop valve with service port Strainer 100 Refrigerant pipe 6 35 with heat insulator Stop valve Capillary tube 3 0x 1 4x550 Refrigerant flow in cooling Outdoor heat exchanger Compressor Compressor Flared connection Flared connection Flared connection Flared connection Muffler Muffler Unit mm Refrigerant pipe 9 52...

Page 9: ...Max Height difference 10m Height difference should be within 10m regardless of which unit indoor or outdoor position is high Outdoor unit Refrigerant Piping Max length A Model Refrigerant piping length one way Outdoor unit precharged 600 750 25m 360 7m 0 10m 60 15m 160 20m 260 MU A07YV E1 MU A09YV E1 MU A12YV E1 Calculation Xg 20g m x A 7 m MAX HEIGHT DIFFERENCE ADDITIONAL REFRIGERANT CHARGE R410A...

Page 10: ... indoor air wet bulb 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...

Page 11: ...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 f f Gauge 18 32 230V 15 20 50 25 60 30 70 35 3 4 5 6 18 32 230V 15 20 50 25 60 30 70 35 0 7 0 8 0 9 1 0 1 1 1 2 1 3 7 8 9 10 11 12 13 MU A12YV E1 MU A12YV E1 Outdoor low pressure Ambient temperature C Ambient humidity Ambient temperature C Ambient humidity Outd...

Page 12: ...32 744 2 94 0 94 0 32 765 28 18 2 70 2 27 0 84 572 2 59 2 17 0 84 601 2 48 2 09 0 84 629 2 39 2 01 0 84 658 28 20 2 82 2 03 0 72 601 2 70 1 95 0 72 636 2 62 1 89 0 72 651 2 53 1 82 0 72 679 28 22 2 93 1 76 0 60 622 2 83 1 70 0 60 661 2 76 1 66 0 60 679 2 65 1 59 0 60 708 28 24 3 08 1 48 0 48 651 2 97 1 42 0 48 686 2 90 1 39 0 48 708 2 81 1 35 0 48 744 28 26 3 17 1 14 0 36 686 3 08 1 11 0 36 722 3 ...

Page 13: ...32 851 2 54 0 81 0 32 869 28 18 2 25 1 89 0 84 701 2 07 1 74 0 84 744 1 99 1 67 0 84 758 28 20 2 37 1 71 0 72 729 2 21 1 59 0 72 765 2 13 1 53 0 72 787 28 22 2 51 1 50 0 60 758 2 35 1 41 0 60 801 2 27 1 36 0 60 815 28 24 2 65 1 27 0 48 787 2 48 1 19 0 48 822 2 42 1 16 0 48 840 28 26 2 78 1 00 0 36 815 2 62 0 94 0 36 851 2 54 0 91 0 36 869 29 18 2 25 1 98 0 88 701 2 07 1 82 0 88 744 1 99 1 75 0 88 ...

Page 14: ...8 827 3 26 0 91 0 28 851 28 18 3 00 2 40 0 80 636 2 87 2 30 0 80 668 2 75 2 20 0 80 700 2 65 2 12 0 80 731 28 20 3 12 2 12 0 68 668 3 00 2 04 0 68 708 2 91 1 98 0 68 723 2 81 1 91 0 68 755 28 22 3 25 1 82 0 56 692 3 14 1 76 0 56 735 3 06 1 71 0 56 755 2 93 1 64 0 56 787 28 24 3 42 1 50 0 44 723 3 29 1 45 0 44 763 3 21 1 41 0 44 787 3 11 1 37 0 44 827 28 26 3 52 1 13 0 32 763 3 42 1 09 0 32 803 3 3...

Page 15: ...8 946 2 82 0 79 0 28 966 28 18 2 50 2 00 0 80 779 2 30 1 84 0 80 827 2 21 1 76 0 80 843 28 20 2 63 1 79 0 68 811 2 45 1 66 0 68 851 2 36 1 60 0 68 875 28 22 2 78 1 56 0 56 843 2 60 1 46 0 56 890 2 51 1 41 0 56 906 28 24 2 93 1 29 0 44 875 2 75 1 21 0 44 914 2 68 1 18 0 44 934 28 26 3 09 0 99 0 32 906 2 91 0 93 0 32 946 2 82 0 90 0 32 966 29 18 2 50 2 10 0 84 779 2 30 1 93 0 84 827 2 21 1 85 0 84 8...

Page 16: ...186 4 48 1 08 0 24 1220 28 18 4 11 3 13 0 76 912 3 94 2 99 0 76 958 3 78 2 87 0 76 1003 3 64 2 77 0 76 1049 28 20 4 29 2 74 0 64 958 4 11 2 63 0 64 1015 3 99 2 55 0 64 1037 3 85 2 46 0 64 1083 28 22 4 46 2 32 0 52 992 4 31 2 24 0 52 1055 4 20 2 18 0 52 1083 4 03 2 09 0 52 1129 28 24 4 69 1 88 0 40 1037 4 52 1 81 0 40 1094 4 41 1 76 0 40 1129 4 27 1 71 0 40 1186 28 26 4 83 1 35 0 28 1094 4 69 1 31 ...

Page 17: ...4 1357 3 87 0 93 0 24 1385 28 18 3 43 2 61 0 76 1117 3 15 2 39 0 76 1186 3 03 2 30 0 76 1208 28 20 3 61 2 31 0 64 1163 3 36 2 15 0 64 1220 3 24 2 07 0 64 1254 28 22 3 82 1 98 0 52 1208 3 57 1 86 0 52 1277 3 45 1 79 0 52 1300 28 24 4 03 1 61 0 40 1254 3 78 1 51 0 40 1311 3 68 1 47 0 40 1340 28 26 4 24 1 19 0 28 1300 3 99 1 12 0 28 1357 3 87 1 08 0 28 1385 29 18 3 43 2 74 0 80 1117 3 15 2 52 0 80 11...

Page 18: ...roller to stop the unit 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 ...

Page 19: ...ure indoor coil thermistor 3 time flash Cause Indoor unit Trouble of indoor fan motor Check room temperature thermistor and indoor coil thermis tor 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 Outdoor unit doesn t stop even if indoor unit stops Check of wiring diagram of out...

Page 20: ...99 3 67Ω 2 46 3 01Ω 2 96 3 63Ω C R C S Abnormal Open or short circuit 4 02 4 92Ω MU A09YV MU A12YV Abnormal Open or short circuit MU A12YV P INNER PROTECTOR Color of lead wire 9 3 Trouble criterion of main parts A A Check of MU MUX TYPE MUH MXZ TYPE SWITCH OVER Start Turn OFF the power supply indoor outdoor unit Set switch SW2 2 on the indoor electronic control P C board to MU type w1 Does the uni...

Page 21: ...panel Screws of the cabinet Screws of the cabinet Photo 2 Screws of the front panel and motor support Screws of the cabinet 1 Slide the sleeve and check if there is a locking lever or not 2 The terminal with this connector is a terminal with lock mechanism 1Slide the sleeve 2Pull the terminal while pushing the locking lever 1Hold the sleeve and pull out the terminal slowly In case of terminal with...

Page 22: ... on the propeller 4 Remove lead clamps and disconnect the outdoor fan motor connector 5 Remove screws fixing the fan motor 6 Remove the outdoor fan motor Photo 5 Propeller nut Outdoor fan motor Screws of the outdoor fan motor Lead clamps Hook Outdoor fan motor connector Propeller Outdoor fan capacitor Compressor capacitor Terminal block 2 Removing the electrical parts 1 Remove the service panel an...

Page 23: ...the glass terminal of the com pressor 6 Recover gas from the refrigerant circuit 7 Disconnect the welded part of the discharge pipe 8 Disconnect the welded part of the suction pipe 9 Remove nuts fixing the compressor 10 Remove the compressor NOTE Before using a burner reclaim gas from the pipes until the pressure gauge shows 0 kg cm2 0 MPa Use the burner under the condition that gas can be recover...

Page 24: ...02 742 661 E02 747 661 E02 742 662 E02 815 245 E02 815 233 E02 835 233 E02 336 515 E02 815 297 E02 459 936 E02 441 936 OUTDOOR HEAT EXCHANGER CABINET GRILLE OUT COMPRESSOR COMPRESSOR COMPRESSOR COMPRESSOR RUBBER SET BASE STOP VALVE GAS STOP VALVE GAS STOP VALVE LIQUID SERVICE PANEL BACK PANEL BACK PANEL MOTOR SUPPORT TOP PANEL CAPILLARY TUBE CAPILLARY TUBE RN092VHSHT RN099VHSHT RN135VHSHT 3RUBBERS...

Page 25: ... CAPACITOR TERMINAL BLOCK TERMINAL BLOCK COMPRESSOR CONTACTOR SURGE ABSORBER RC6V20 RA6V33 1 5 440V AC 2 0 440V AC 20 440V AC 25 440V AC 30 440V AC 3P 2P MF MF C2 C2 C1 C1 C1 TB1 TB2 52C DSAR 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 No Part No Part name Remarks Symbol in Wiring Diagram Q ty unit MU A07YV E1 MU A09YV E1 MU A12YV E1 1 2 3 4 6 5 11 2 OUTDOOR UNIT ELECTRICAL PARTS AND FUNCTIONA...

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Page 28: ...RIC ENGINEERING CO LTD Distributed in Dec 2003 No OB330 6 Made in Japan New publication effective Dec 2003 Specifications subject to change without notice HEAD OFFICE MITSUBISHI DENKI BLDG 2 2 3 MARUNOUCHI CHIYODA KU TOKYO100 8310 JAPAN ...

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