Table of Contents
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SPLIT-TYPE, AIR CONDITIONERS
SERVICE MANUAL
Wireless type
Models
MU-A07YV -
MU-A09YV -
MU-A12YV -
NOTE:
•This service manual describes technical data of outdoor units.
•As for indoor units MSC-A07YV -
refer to the service manual OB329.
•As for indoor unit MCF-A12WV -
E1
E1
E1
CONTENTS
Indication of
model name
MU-A07YV -
E1
MU-A09YV -
E1
MU-A12YV -
E1
10. DISASSEMBLY INSTRUCTIONS·····················23
11. PARTS LIST······················································26
, MSC-A09YV -
and MSC-A12YV -
E1
E1
, refer to the service manual OB338.
E1
Revision A:
MU-A12YV -
MCF-A12WV -
Please void OB330.
HFC
utilized
R410A
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 ································9
9. TROUBLESHOOTING······································20
,
E1
can be connected to
E1
.
E1
No. OB330
REVISED EDITION-A
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Related Manuals for Mitsubishi Electric MU-A07YV -E1
Summary of Contents for Mitsubishi Electric MU-A07YV -E1
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Page 1: Table Of Contents
Revision A: MU-A12YV - can be connected to MCF-A12WV - SPLIT-TYPE, AIR CONDITIONERS Please void OB330. No. OB330 REVISED EDITION-A utilized SERVICE MANUAL R410A Wireless type Models MU-A07YV - MU-A09YV - MU-A12YV - CONTENTS 1. TECHNICAL CHANGES ····································2 2. PART NAMES AND FUNCTIONS······················5 3. -
Page 2: Technical Changes
Revision A: •MU-A12YV - can be connected to MCF-A12WV - SPECIFICATION and PERFORMANCE CURVES have been added. TECHNICAL CHANGES MU-A07WV- MU-A07YV- MU-A09WV- MU-A09YV- 1. Outdoor heat exchanger has changed. 2. Outdoor fan motor has changed. (RA6V23-FC RC6V20-AC) MU-A12WV- MU-A12YV- 1. Outdoor heat exchanger has changed. 2. - Page 3 New Specification Current Specification The incompatible refrigerating oil easily separates from Since refrigerant and refrigerating oil are compatible each, refrigerant and is in the upper layer inside the suction muffler. refrigerating oil backs to the compressor through the lower Raising position of the oil back hole enables to back the position oil back hole.
- Page 4 2.Refrigerant piping 1 Specifications Use the refrigerant pipes that meet the following specifications. Outside diameter Wall Pipe Insulation material thickness For liquid 6.35 0.8 mm Heat resisting foam plastic 0.8 mm 9.52 For gas Specific gravity 0.045 Thickness 8 mm 0.8 mm 12.7 •...
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Page 5: Part Names And Functions
PART NAMES AND FUNCTIONS OUTDOOR UNIT MU-A07YV - Air inlet (back and side) MU-A09YV - MU-A12YV - Piping Drain hose Air outlet Drain outlet SPECIFICATION MU-A12YV - MU-A12YV - Outdoor model MU-A07YV - MU-A09YV - Indoor unit Indoor unit MSC-A12YV - MCF-A12WV - Single phase Single phase... -
Page 6: Noise Criteria Curves
NOISE CRITERIA CURVES MU-A12YV- MU-A07YV- SPL(dB LINE FUNCTION FUNCTION SPL(dB LINE MU-A09YV- COOL COOL Test conditions, Test conditions, Cooling :DB35: WB24: Cooling : DB27: WB19: NC-70 NC-70 NC-60 NC-60 NC-50 NC-50 NC-40 NC-40 NC-30 NC-30 APPROXIMATE APPROXIMATE TERESHOLD OF TERESHOLD OF HEARING FOR HEARING FOR NC-20... -
Page 7: Outlines And Dimensions
OUTLINES AND DIMENSIONS MU-A07YV - MU-A09YV - MU-A12YV - Unit: mm REQUIRED SPACE OUTDOOR UNIT Air in Air in Drainage 3holes [33 Air out Service panel Liquid refrigerant pipe joint Refrigerant pipe (flared) [6.35 Gas refrigerant pipe joint Refrigerant pipe (flared) [9.52 (MU-A07/A09YV ) [12.7 (MU-A12YV ) WIRING DIAGRAM... -
Page 8: Refrigerant System Diagram
REFRIGERANT SYSTEM DIAGRAM MU-A07YV - Unit:mm MU-A09YV - OUTDOOR UNIT Refrigerant pipe [9.52 (with heat insulator) Stop valve (with service port) Muffler Outdoor heat Flared connection exchanger Compressor Flared connection Strainer #100 Capillary tube [3.0x[1.4x900 Refrigerant pipe [6.35 (with heat insulator) Refrigerant flow in cooling MU-A12YV - Unit:mm... -
Page 9: Performance Curves
MAX. REFRIGERANT PIPING LENGTH Refrigerant piping Piping size O.D : mm Length of connecting pipe : m Model Max. length : m Outdoor unit Liquid Indoor unit MU-A07YV - 9.52 MU-A09YV - Gas 0 Gas 0.43 6.35 Liquid 0 Liquid 0.5 MU-A12YV - 12.7 MAX. -
Page 10: Indoor Unit
INDOOR UNIT OUTDOOR UNIT Wet-and dry-bulb Wet-and dry-bulb thermometers thermometers 8-1.CAPACITY AND THE INPUT CURVES 11.0 10.0 8-2.OUTDOOR LOW PRESSURE AND OUTDOOR UNIT CURRENT COOL operation Both indoor and outdoor unit are under the same temperature/humidity condition. Relative humidity(%) Dry-bulb temperature Air flow should be set at MAX. - Page 11 MU-A09YV - MU-A09YV - (kgf/F[Gauge])(MPa[Gauge]) 230V 230V 35(:) 35 (:) 70(%) 70 (%) Ambient temperature(˚C) Ambient humidity(%) Ambient temperature(˚C) Ambient humidity(%) MU-A12YV - MU-A12YV - (Indoor unit : MSC-A12YV - (Indoor unit : MSC-A12YV - (kgf/F[Gauge])(MPa[Gauge]) 230V 230V 35(:) 35 (:) 70 (%) 70(%) Ambient temperature(˚C) Ambient humidity(%)
- Page 12 PERFORMANCE DATA COOL operation (230V) MSC-A07YV - : MU-A07YV - CAPACITY : 2.3(KW) SHF : 0.74 INPUT : 715(W) OUTDOOR DB(:) INDOOR INDOOR DB(:) WB(:) SHC SHF INPUT SHC SHF INPUT SHC SHF INPUT SHC SHF INPUT 2.70 1.51 0.56 2.59 1.45 0.56 2.48 1.39 0.56 2.39 1.34 0.56...
- Page 13 PERFORMANCE DATA COOL operation (230V) MSC-A07YV - : MU-A07YV - CAPACITY : 2.3(KW) SHF : 0.74 INPUT : 715(W) OUTDOOR DB(:) INDOOR INDOOR DB(:) WB(:) SHC SHF INPUT SHC SHF INPUT SHC SHF INPUT 2.25 1.26 0.56 2.07 1.16 0.56 1.99 1.11 0.56 2.37 1.04 0.44 2.21 0.97 0.44...
- Page 14 PERFORMANCE DATA COOL operation (230V) MSC-A09YV - : MU-A09YV - CAPACITY : 2.55(KW) SHF : 0.70 INPUT : 795(W) OUTDOOR DB(:) INDOOR INDOOR DB(:) WB(:) SHC SHF INPUT SHC SHF INPUT SHC SHF INPUT SHC SHF INPUT 3.00 1.56 0.52 2.87 1.49 0.52 2.75 1.43 0.52 2.65 1.38 0.52...
- Page 15 PERFORMANCE DATA COOL operation (230V) MSC-A09YV - : MU-A09YV - CAPACITY : 2.55(KW) SHF : 0.70 INPUT : 795(W) OUTDOOR DB(:) INDOOR INDOOR DB(:) WB(:) SHC SHF INPUT SHC SHF INPUT SHC SHF INPUT 2.50 1.30 0.52 2.30 1.19 0.52 2.21 1.15 0.52 2.63 1.05 0.40 2.45 0.98 0.40...
- Page 16 PERFORMANCE DATA COOL operation (230V) MSC-A12YV - : MU-A12YV - CAPACITY : 3.5(KW) SHF : 0.66 INPUT : 1140(W) OUTDOOR DB(:) INDOOR INDOOR DB(:) WB(:) SHC SHF INPUT SHC SHF INPUT SHC SHF INPUT SHC SHF INPUT 4.11 1.97 0.48 3.94 1.89 0.48 3.78 1.81 0.48 1003...
- Page 17 PERFORMANCE DATA COOL operation (230V) MSC-A12YV - : MU-A12YV - CAPACITY : 3.5(KW) SHF : 0.66 INPUT : 1140(W) OUTDOOR DB(:) INDOOR INDOOR DB(:) WB(:) SHC SHF INPUT SHC SHF INPUT SHC SHF INPUT 3.43 1.65 0.48 1117 3.15 1.51 0.48 1186 3.03 1.45 0.48 1208...
- Page 18 PERFORMANCE DATA COOL operation (230V) MCF-A12WV - : MU-A12YV - CAPACITY :3.5(KW) SHF :0.70 INPUT :1160(W) OUTDOOR DB(:) INDOOR INDOOR DB(:) WB(:) SHC SHF INPUT SHC SHF INPUT SHC SHF INPUT SHC SHF INPUT 4.11 2.14 0.52 3.94 2.05 0.52 3.78 1.97 0.52 1021 3.64 1.89 0.52...
- Page 19 PERFORMANCE DATA COOL operation (230V) MCF-A12WV - : MU-A12YV - CAPACITY :3.5(KW) SHF :0.70 INPUT :1160(W) OUTDOOR DB(:) INDOOR INDOOR DB(:) WB(:) SHC SHF INPUT SHC SHF INPUT SHC SHF INPUT 3.43 1.78 0.52 1137 3.15 1.64 0.52 1206 3.03 1.57 0.52 1230 3.61 1.44 0.40 1183...
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Page 20: Troubleshooting
TROUBLESHOOTING MU-A07YV - MU-A09YV - MU-A12YV - 9-1. 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 first turn off the remote controller to stop the unit, and then after con- firming the horizontal vane is closed, turn off the breaker and/or disconnect the power plug. - Page 21 9-2. Instruction of troubleshooting MU-A07YV - MU-A09YV - MU-A12YV - Start Indoor unit OPERATION Indoor unit Indoor unit operates. INDICATOR operates. doesn't receive Outdoor unit lamp on the Outdoor unit the signal from doesn't operate indoor unit is doesn't remote controller. normally.
- Page 22 9-3. Trouble criterion of main parts MU-A07YV - MU-A09YV - MU-A12YV - Figure Part name Check method and criterion Compressor (MC) Measure the resistance between the terminals with a tester. INNER (Coil wiring temperature –10°C ~ 40°C) PROTECTOR MU-A07/A09YV Normal AUX.
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Page 23: Disassembly Instructions
DISASSEMBLY INSTRUCTIONS <"Terminal with lock mechanism" Detaching points> In case of terminal with lock mechanism, detach the terminal as shown below. There are two types ( Refer to (1) and (2)) of the terminal with lock mechanism. The terminal with no lock mechanism can be removed by pulling it out. Check the shape of the terminal and work. - Page 24 OPERATING PROCEDURE PHOTOS 2. Removing the electrical parts Photo 4 (1) Remove the service panel and the cabinet.(Refer to 1.) Compressor (2) Remove the following parts. Screws capacitor • Compressor capacitor (C1) Relay panel • Outdoor fan capacitor (C2) • Terminal block Contractor Terminal block Outdoor fan capacitor...
- Page 25 OPERATING PROCEDURE PHOTOS 4. Removing the compressor Photo 6 (1) Remove the cabinet. (Refer to 1.) Suction pipe Discharge pipe (2) Remove the relay panel. (3) Remove the soundproof felt. (4) Remove the terminal cover on the compressor. (5) Disconnect lead wires from the glass terminal of the com- Glass pressor.
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Page 26: Parts List
PARTS LIST MU-A07YV - MU-A09YV - MU-A12YV - 11-1. OUTDOOR UNIT STRUCTURAL PARTS Part number that is circled is not shown in the illustration. Q'ty/unit Symbol Part No. in Wiring Part name Remarks MU-A09YV- MU-A07YV- MU-A12YV- Diagram E02 832 630 OUTDOOR HEAT EXCHANGER E02 815 232 CABINET... - Page 27 MU-A07YV - MU-A09YV - MU-A12YV - 11-2. OUTDOOR UNIT ELECTRICAL PARTS AND FUNCTIONAL PARTS Part numbers that are circled are not shown in the illustration. Q'ty/unit Symbol Part No. Part name in Wiring Remarks MU-A07YV- MU-A09YV- MU-A12YV- Diagram E02 665 501 PROPELLER E02 832 301 OUTDOOR FAN MOTOR...
- Page 28 HEAD OFFICE: MITSUBISHI DENKI BLDG.,2-2-3, MARUNOUCHI, CHIYODA-KU, TOKYO100-8310, JAPAN C C Copyright 2003 MITSUBISHI ELECTRIC ENGINEERING CO.,LTD New publication, effective Mar. 2004 Distributed in Mar. 2004. No.OB330 REVISED EDITION-A 6 Specifications subject to change without notice. Distributed in Dec. 2003. No.OB330 6...