Table of Contents
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SPLIT-TYPE, AIR CONDITIONERS
SERVICE MANUAL
Wireless type
Models
MU-A07YV -
MU-A09YV -
MU-A12YV -
NOTE:
•This manual describes technical data of outdoor units.
•As for indoor units MSC-A07/A09/A12YV -
E1
E1
E1
CONTENTS
1. TECHNICAL CHANGES ····································2
2. PART NAMES AND FUNCTIONS······················5
3. SPECIFICATION·················································5
4. NOISE CRITERIA CURVES ·······························6
Indication of
5. OUTLINES AND DIMENSIONS ·························7
model name
6. WIRING DIAGRAM ············································7
MU-A07YV -
E1
7. REFRIGERANT SYSTEM DIAGRAM ················8
MU-A09YV -
E1
8. PERFORMANCE CURVES ······························10
MU-A12YV -
E1
9. TROUBLESHOOTING······································18
10. DISASSEMBLY INSTRUCTIONS·····················21
11. PARTS LIST······················································24
, refer to the service manual OB329.
E1
HFC
utilized
R410A
No. OB330
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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
SPLIT-TYPE, AIR CONDITIONERS No. OB330 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. SPECIFICATION·················································5 4. NOISE CRITERIA CURVES ·······························6 Indication of 5. OUTLINES AND DIMENSIONS ·························7 model name 6. -
Page 2: Technical Changes
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. Outdoor fan motor has changed. (RA6V33-DC RA6V33-FC) INFORMATION FOR THE AIR CONDITIONER WITH R410A REFRIGERANT •... - Page 3 Conversion chart of refrigerant temperature and pressure (MPa [Gauge]) R410A NOTE : The 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]) -0.5 -30 -20 -10 1.Tools dedicated for the air conditioner with R410A refrigerant The following tools are required for R410A refrigerant.
- Page 4 2 Flaring work and flare nut Flaring work for R410A pipe differs from that for R22 pipe. For details of flaring work, refer to Installation manual “FLARING WORK”. Dimension of flare nut Pipe diameter R410A 6.35 9.52 12.7 3.Refrigerant oil Apply the special refrigeration oil (accessories: packed with indoor unit) to the flare and the union seat surfaces.
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Page 5: Part Names And Functions
PART NAMES AND FUNCTIONS OUTDOOR UNIT MU-A07YV - Air inlet MU-A09YV - (back and side) MU-A12YV - Piping Drain hose Air outlet Drain outlet SPECIFICATION Outdoor model MU-A07YV - MU-A09YV - MU-A12YV - Single phase Single phase Single phase Outdoor unit power supply 230V,50Hz 230V,50Hz 230V,50Hz... -
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 MAX. REFRIGERANT PIPING LENGTH Refrigerant piping Piping size O.D : mm Length of connecting pipe : m Model Max. length : m Liquid Indoor unit Outdoor unit MU-A07YV - Gas 0 Gas 0.43 9.52 MU-A09YV - 6.35 Liquid 0 Liquid 0.5 MU-A12YV - 12.7 MAX.
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Page 10: Performance Curves
PERFORMANCE CURVES MU-A07YV - MU-A09YV - MU-A12YV - 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 pro- vided to clarify the operating characteristics of the air conditioner under the conditions indicated by the performance curve. - Page 11 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. The 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] ) MU-A07YV -...
- 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...
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Page 18: 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 19 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 20 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 21: 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 22 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 23 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 24: 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 25 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 Dec. 2003 Distributed in Dec. 2003. No.OB330 6 Specifications subject to change without notice. Made in Japan...