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SERVICE MANUAL

Wireless type
Models

MU-A09WA
MU-A12WA
MU-A12WA-

1

SPLIT-TYPE AIR CONDITIONERS

OUTDOOR UNIT

CONTENTS

1. TECHNICAL CHANGES ····································2
2. PART NAMES AND FUNCTIONS······················5
3. SPECIFICATION·················································6
4. OUTLINES AND DIMENSIONS ·························8
5. WIRING DIAGRAM ············································9
6. REFRIGERANT SYSTEM DIAGRAM ··············10
7. DATA·································································12
8. TROUBLESHOOTING······································16
9. DISASSEMBLY INSTRUCTIONS ····················17

10. PARTS LIST······················································22

10-1. PARTS LIST·············································22
10-2. RoHS PARTS LIST ··································24

NOTE:
This service manual describes technical data of the outdoor units.
RoHS compliant products have <G> mark on the spec name plate.
For servicing of RoHS compliant products, refer to the RoHS PARTS
LIST (RoHS compliant).

Indoor unit service manual

MS-A•WA Series (OB448)

MU-A12WA

MU-A09WA

TM

HFC

utilized

R410A

No. OB449

REVISED EDITION-A

Revision : A

●

MU-A12WA-

has been added.

1

Please void OB449.

OB449A.qxp 06.5.9 11:13 AM Page 1

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Содержание MU-A09WA

Страница 1: ...HOOTING 16 9 DISASSEMBLY INSTRUCTIONS 17 10 PARTS LIST 22 10 1 PARTS LIST 22 10 2 RoHS PARTS LIST 24 NOTE This service manual describes technical data of the outdoor units RoHS compliant products have G mark on the spec name plate For servicing of RoHS compliant products refer to the RoHS PARTS LIST RoHS compliant Indoor unit service manual MS A WA Series OB448 MU A12WA MU A09WA TM HFC utilized R4...

Страница 2: ...harge on leakage Kind Color Smell w1 Ozone Destruction Parameter based on CFC 11 w2 Global Warmth Parameter based on CO2 INFORMATION FOR THE AIR CONDITIONER WITH R410A REFRIGERANT This room air conditioner adopts HFC refrigerant R410A which never destroys the ozone layer Pay particular attention to the following points though the basic installation procedure is same as that for R22 air conditioner...

Страница 3: ... compressor Since refrigerant and refrigeration oil are compatible each refrigeration oil goes back to the compressor through the lower position oil back hole Compressor Suction muffler Oil back hole refrigeration oil Refrigerant Compressor Suction muffler Oil back hole refrigeration oil Refrigerant Compressor 22 4 14 32 50 68 86 104 122 140 73 0 73 145 218 290 363 435 508 580 PSIG R410A R22 Conve...

Страница 4: ...ump adapter Electronic scale for refrigerant charging No Not Substitutable for R410A Yes Substitutable for R410A No 1 2in and 5 8in 1 Tools dedicated for the air conditioner with R410A refrigerant The following tools are required for R410A refrigerant Some R22 tools can be substituted for R410A tools R410A Pipe diameter inch 1 4 3 8 1 2 5 8 17 11 16 22 7 8 26 1 1 32 29 1 5 32 Dimension of flare nu...

Страница 5: ... 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 from liquid phase of the gas cy...

Страница 6: ...Hz A A F L A R L A L R A dB A in in in Ib in in ft ft cc Munsell 3Y 7 8 1 1 115 1 60 Capillary tube Wireless type Not supplied 1 4 0 0315 Flared Flared 35 65 350 NE022 12 000 1 070 11 2 13 0 MU A12WA 20 16 0 926 RN110WHDHT C R 0 66 C S 1 23 10 82 56 52 33 7 16 11 7 16 23 13 16 96 1 2 0 0315 3lb 1oz 9 500 870 10 9 13 0 MU A09WA 15 14 0 63 RN092WHDHT C R 0 81 C S 1 49 9 30 47 47 31 1 2 11 1 4 21 5 8...

Страница 7: ...ompressor Speed B 2 Cooling Steady State at rated compressor Speed B 1 Cooling Steady State at minimum compressor Speed Low ambient Cooling Steady State at minimum compressor Speed Intermediate Cooling Steady State At Intermediate compressor Speed Test Indoor air condition Outdoor air condition Dry bulb Wet bulb Dry bulb Wet bulb 80 80 80 80 80 67 67 67 67 67 95 82 82 67 87 75 65 65 53 5 69 Unit F...

Страница 8: ...ipe joint Rfrigerant pipe flared 1 2 REQUIRED SPACE 4 in or more 4 in or more 4 in or more 14 in or more 20 in or more Liquid pipe 1 4 flared Gas pipe 3 8 flared 6 23 32 2 5 7 8 2 23 32 1 3 4 15 3 4 12 12 3 4 13 9 16 11 16 1 9 16 7 8 21 5 8 11 1 32 13 32 31 1 2 19 11 16 5 15 16 11 29 32 17 32 29 32 11 1 4 Air in handle Air in Air out 2 3 8o13 16 Oval hole Drainage hole 1 5 8 REQUIRED SPACE Basical...

Страница 9: ...9 WIRING DIAGRAM 5 MU A09WA MU A12WA ...

Страница 10: ...ervice port Muffler Stop valve with service port Stop valve Strainer 100 Outdoor heat exchanger Refrigerant pipe Option 1 4 with heat insulator Refrigerant pipe 3 8 with heat insulator Flared connection Flared connection O D 0 118 x I D 0 055 x 21 21 32 3 0 x 1 4 x 550 MU A09WA Unit inch mm MU A12WA 1 ...

Страница 11: ...RIGERANT CHARGE R410 oz NOTE Calculation Xoz 1 08 5oz ft Refrigerant piping length ft 25 Model Outdoor unit precharged 2lb 5oz 3lb 1oz MU A09WA MU A12WA Refrigerant piping length one way 35ft 25ft 30ft 40ft 45ft 50ft 55ft 60ft 65ft 2 16 0 1 08 3 24 4 32 5 40 6 48 7 56 8 64 Service port Service port Capillary tube Stop valve with service port Stop valve Compressor Strainer 100 Outdoor heat exchange...

Страница 12: ... TC SHC TPC TC SHC TPC TC SHC TPC IWB F 75 85 95 105 115 Notes 1 IWB Intake air wet bulb temperature TC Total Capacity x103 Btu h SHC Sensible Heat Capacity x103 Btu h TPC Total Power Consumption kW 2 SHC is based on 80 F of indoor intake air DB temperature 7 1 PERFORMANCE DATA 1 COOLING CAPACITY MS A09WA MS A12WA 2 COOLING CAPACITY CORRECTIONS 71 67 63 71 67 63 71 67 63 71 67 63 Outdoor intake ai...

Страница 13: ...60 180 200 68 Condensing pressure Outdoor ambient temperature PSIG 86 80 75 70 Indoor DB temperature F Indoor DB temperature F PSIG 68 Suction pressure Outdoor ambient temperature MU A12WA 86 80 75 70 70 75 80 85 90 95 100 105 F 260 300 340 380 420 460 440 400 360 320 280 70 75 80 85 90 95 100 105 F 100 120 140 160 180 200 68 Condensing pressure Outdoor ambient temperature PSIG 86 80 75 70 Indoor ...

Страница 14: ...ressure Discharge temperature Condensing temperature Suction temperature Comp shell bottom temp Ref pipe length Refrigerant charge R22 Intake air temperature Discharge air temperature Fan speed High Airflow High Intake air temperature Fan speed Airflow Unit Btu h kW kW A kW A A PSIG PSIG F F F F ft F F F F rpm CFM F F rpm CFM MS A12WA Cooling 12000 0 70 1 07 MS A12WA 115 1 60 0 035 0 51 MU A12WA 1...

Страница 15: ...Guaranteed Voltage Min 103V Max 127V 115V 115V 60Hz 1 2 OPERATION Function Cooling Standard temperature Maximum temperature Minimum temperature Maximum humidity DB F 80 95 67 WB F 67 71 57 Indoor 78 DB F 95 115 67 WB F Outdoor Condition Intake air temperature ...

Страница 16: ... lead wires 8 2 Instruction of trouble shooting If indoor unit and outdoor unit doesn t operate please check of outdoor unit fuse F MU A09WA MU A12WA Lead wiring Housing point MU A09WA Outdoor fan motor MF INNER PROTECTOR MU A09WA 248 i 9 F OPEN INNER PROTECTOR MU A12WA 248 i 9 F OPEN Measure the resistance between the terminals with a tester Coil wiring temperature 14 F 104 F Color of the lead wi...

Страница 17: ... 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 pu...

Страница 18: ...ve the lead clamps and outdoor fan motor lead wires 4 Remove the screws fixing the outdoor fan motor 5 Remove the outdoor fan motor Photo 4 Propeller Outdoor fan motor connector 2 Removing the electrical parts 1 Remove the service panel and the cabinet Refer to 1 2 Remove the following parts Compressor capacitor C1 Outdoor fan capacitor C2 Terminal block TB1 TB2 Surge absorber DSAR Compressor cont...

Страница 19: ...Disconnect lead wires from the glass terminal of the com pressor 6 Recover gas from the refrigerant circuit NOTE Recover gas from the pipes until the pressure gauge shows 0 PSIG 7 Disconnect the welded part of the suction pipe and dis charge pipe 8 Remove the nuts fixing the compressor 9 Remove the compressor Photo 5 Compressor Compressor nuts Suction pipe Discharge pipe Glass terminal ...

Страница 20: ...e cabinet 2 Removing the electrical parts 1 Remove the service panel and the cabinet Refer to 1 2 Remove the following parts Compressor capacitor C1 Outdoor fan capacitor C2 Terminal block TB 9 2 MU A12WA Photo 1 Photo 3 Photo 2 Service panel Screws of the cabinet Compressor capacitor C1 Terminal block TB2 Outdoor fan capacitor C2 Conduit plate Valve cover Terminal block TB1 ...

Страница 21: ...e the outdoor fan motor 4 Removing the compressor 1 Remove the cabinet Refer to 1 2 Remove the relay panel 3 Remove the soundproof felt 4 Remove the terminal cover 5 Pull out the lead wires from the glass terminal of the com pressor 6 Recover gas from the refrigerant circuit 7 Disconnect the welded part of the suction pipe and dis charge pipe 8 Remove the nuts fixing the compressor and the compres...

Страница 22: ...UBBERS SET RN092WHDHT 3 8 1 4 3P 2P 7 0µF 250VAC 70µF 220VAC 1PCE SET O D 0 118 x I D 0 055x21 21 32 MF MC TB1 TB2 C2 C1 52C DSAR 1 1 1 1 1 1 3 1 1 1 1 1 1 1 1 1 1 2 1 1 1 1 1 1 MU A09WA E02 A49 630 E02 A49 301 E02 665 501 E02 903 232 E02 927 521 E02 905 290 E02 075 506 E02 A49 900 E02 A49 661 E02 A49 662 E02 A54 233 E02 A49 245 E02 A50 374 E02 A49 374 E02 A49 350 E02 545 353 E02 A49 340 E02 A49 6...

Страница 23: ...R RN110WHDHT 3RUBBERS SET 1 2 1 4 1PCE SET 2P 3P 75 220V AC 9 5 250V AC RA6W50 O D 0 118 I D 0 063 27 9 16 MU A12WA MC TB2 TB1 C1 52C C2 MF 1 1 1 1 1 1 3 1 1 1 1 2 1 1 1 1 1 1 1 1 1 1 1 1 E02 A50 233 E02 817 232 E02 817 521 E02 141 501 E02 139 515 E02 A50 900 E02 075 506 E02 A27 290 E02 A50 661 E02 A50 662 E02 819 650 E02 A49 641 E02 A50 245 E02 A49 374 E02 A50 374 E02 A50 353 E02 A49 340 E02 A50 ...

Страница 24: ... ABSORBER RA6W26 3RUBBERS SET RN092WHDHT 3 8 1 4 3P 2P 7 0µF 250VAC 70µF 220VAC 1PCE SET O D 0 118 x I D 0 055x21 21 32 MF MC TB1 TB2 C2 C1 52C DSAR 1 1 1 1 1 1 3 1 1 1 1 1 1 1 1 1 1 2 1 1 1 1 1 1 MU A09WA E12 A49 630 E12 A49 301 E12 665 501 E12 903 232 E12 927 521 E12 905 290 E12 075 506 E12 A49 900 E12 A49 661 E12 A49 662 E12 A54 233 E12 A49 245 E12 A50 374 E12 A49 374 E12 A49 350 E12 545 353 E1...

Страница 25: ...N110WHDHT 3RUBBERS SET 1 2 1 4 1PCE SET 2P 3P 75 220V AC 9 5 250V AC RA6W50 O D 0 118 I D 0 063 27 9 26 MU A12WA MC TB2 TB1 C1 52C C2 MF 1 1 1 1 1 1 3 1 1 1 1 2 1 1 1 1 1 1 1 1 1 1 1 1 MU A12WA 1 1 1 1 1 1 1 3 1 1 1 1 2 1 1 1 1 1 1 1 1 1 1 1 1 E12 A50 233 E12 817 232 E12 817 521 E12 141 501 E12 139 515 E12 A50 900 E12 075 506 E12 A27 290 E12 A50 661 E12 A50 662 E12 819 650 E12 A49 641 E12 A50 245 ...

Страница 26: ...26 ...

Страница 27: ...27 ...

Страница 28: ...006 MITSUBISHI ELECTRIC ENGINEERING CO LTD Distributed in May 2006 No OB449 REVISED EDITION A 7 Distributed in Mar 2006 No OB449 7 New publication effective May 2006 Specifications subject to change without notice TM ...

Страница 29: ...3400 Lawrenceville Suwanee Road Suwanee Georgia 30024 Toll Free 800 433 4822 Toll Free Fax 800 889 9904 www mrslim com Specifications are subject to change without notice ...

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