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SPLIT-TYPE, AIR CONDITIONER
SERVICE MANUAL
Multi system type
Model
MUX-A22WV -
NOTE:
•This manual describes technical data of outdoor unit.
•As for indoor unit MSC-A07WV -
refer to the service manual OB307 REVISED EDITION-A.
E1
CONTENTS
MUX-A22WV -
E1
Indication of
model name
10. MICROPROCESSOR CONTROL ····················15
11. TROUBLESHOOTING ······································15
12. DISASSEMBLY INSTRUCTIONS·····················21
13. PARTS LIST······················································23
or MSC-A12WV -
,
E1
E1
HFC
utilized
R410A
1. TECHNICAL CHANGES ····································2
2. PART NAMES AND FUNCTIONS······················4
CORRESPONDENCE TABLE ···························5
4. SPECIFICATION·················································5
5. NOISE CRITERIA CURVES ·······························6
6. OUTLINES AND DIMENSIONS ························ 6
7. WIRING DIAGRAM ············································7
8. REFRIGERANT SYSTEM DIAGRAM ················8
9. PERFORMANCE CURVES ································9
No. OB318
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Related Manuals for Mitsubishi MUX-A22WV
Summary of Contents for Mitsubishi MUX-A22WV
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Page 1: Table Of Contents
SPLIT-TYPE, AIR CONDITIONER No. OB318 utilized SERVICE MANUAL R410A Multi system type Model MUX-A22WV - CONTENTS MUX-A22WV - 1. TECHNICAL CHANGES ····································2 Indication of 2. PART NAMES AND FUNCTIONS······················4 model name 3. INDOOR / OUTDOOR CORRESPONDENCE TABLE ···························5 4. SPECIFICATION·················································5 5. -
Page 2: Technical Changes
TECHNICAL CHANGES INFORMATION FOR THE AIR CONDITIONER WITH R410A REFRIGERANT • This room air conditioner adopts an 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 conditioners. 1 As R410A has working pressure approximate 1.6 times as high as that of R22, some special tools and piping parts/ materials are required. - 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.
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Page 4: Part Names And Functions
(for R410A) Charge hose (for R410A) Refrigerant gas cylinder for R410A with siphon Refrigerant (liquid) Electronic scale for refrigerant charging PART NAMES AND FUNCTIONS OUTDOOR UNIT MUX-A22WV- Air inlet (Back and side) Air outlet Piping Drainage hose Drain outlet... -
Page 5: Indoor / Outdoor Correspondence Table
INDOOR / OUTDOOR CORRESPONDENCE TABLE MUX-A22WV - MUX-A22WV- MSC-A12WV- B: MSC-A07WV- SPECIFICATION Outdoor model MUX-A22WV - Cooling Function Single phase Outdoor unit power supply 230V,50Hz Single Single Double Double Triple Indoor unit No . A+B or A+C B or C A+B+C 3.5+2.4... -
Page 6: Noise Criteria Curves
NOISE CRITERIA CURVES MUX-A22WV - SPL(dB LINE FUNCTION COOL Test conditions. Cooling :DB35: WB24: NC-70 NC-60 NC-50 NC-40 NC-30 APPROXIMATE TERESHOLD OF HEARING FOR NC-20 CONTINUOUS NOISE 1000 2000 4000 8000 BAND CENTER FREQUENCIES, Hz OUTLINES AND DIMENSIONS MUX-A22WV- Unit: mm... -
Page 7: Wiring Diagram
WIRING DIAGRAM MUX-A22WV - MODEL WIRING DIAGRAM OUTDOOR UNIT... -
Page 8: Refrigerant System Diagram
21R4 Indoor coil thermistor Capillary tube CT4 Refrigerant pipe RT12 [3.0 x [1.6 x 900 6.35 (With insulation) MUX-A22WV- MAX.REFRIGERANT PIPING LENGTH & MAX. HEIGHT DIFFERENCE Indoor unit A Indoor unit B Indoor unit C Outdoor unit MUX-A22WV - E1... -
Page 9: Performance Curves
3Refrigerant bending radius must be 100mm or more. PERFORMANCE CURVES MUX-A22WV - 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 10: Indoor Unit
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] ) MUX-A22WV- Single operation (Unit A) (kgf/F[Gauge])(MPa[Gauge]) (kgf/F[Gauge])(MPa[Gauge]) Single operation (Unit B or C) - Page 11 PERFORMANCE DATA COOL operation (230V) MSC-A12WV - (Single : Room A) : MUX-A22WV - CAPACITY : 3.5(kW) SHF : 0.73 INPUT : 1320(W) DB( : ) OUTDOOR INDOOR INDOOR DB( : ) WB( : ) SHC SHF INPUT SHC SHF INPUT...
- Page 12 PERFORMANCE DATA COOL operation (230V) MSC-A12WV - (Single : Room A) : MUX-A22WV - CAPACITY : 3.5(kW) SHF : 0.73 INPUT : 1320(W) OUTDOOR DB( : ) INDOOR INDOOR DB( : ) WB( : ) SHC SHF INPUT SHC SHF INPUT SHC SHF INPUT 3.43 1.88 0.55...
- Page 13 PERFORMANCE DATA COOL operation (230V) MSC-A07WV - (Single : Room B or C) : MUX-A22WV - CAPACITY : 2.4(kW) SHF : 0.74 INPUT : 850(W) DB( : ) OUTDOOR INDOOR INDOOR DB( : ) WB( : ) SHC SHF INPUT...
- Page 14 PERFORMANCE DATA COOL operation (230V) MSC-A07WV - (Single : Room B or C) : MUX-A22WV - CAPACITY : 2.4(kW) SHF : 0.74 INPUT : 850(W) DB( : ) OUTDOOR INDOOR INDOOR DB( : ) WB( : ) SHC SHF INPUT...
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Page 15: Microprocessor Control
MICROPROCESSOR CONTROL MUX-A22WV - OUTDOOR UNIT ACTUATOR CONTROL MUX-A22WV - INDOOR UNIT ACTUATOR – – – – – COMPRESSOR – – – ANY UNIT ON OUTDOOR MF61 FAN MOTOR – – ON (OPEN) 21R3 – – OFF (CLOSE) – –... - Page 16 11-2. Instruction of troubleshooting MUX-A22WV - Start Indoor unit OPERATION Indoor unit Indoor unit Indoor unit operates. INDICATOR operates. operates. doesn't receive Outdoor unit lamp on the But indoor Outdoor unit the signal from doesn't operate indoor unit is unit doesn't doesn't remote controller.
- Page 17 MUX-A22WV - Figure Part name Check method and criterion Measure the resistance between the terminals with a tester. (Coil wiring temperature-10°C ~ 40°C) Compressor (MC1, MC2) Normal Abnormal INNER PROTECTOR RN145VHSHT RN092VHSHT Open or 150°C OPEN 2.14 ~ 2.63Ω 3.41 ~ 4.18Ω...
- Page 18 Compressor and / or outdoor fan doesn’t operate. A A Check of outdoor unit Start Is there 230V AC Check the power supply between L - N on the TB1 and connecting wire. of outdoor unit? Press the EMERGENCY OPEERATION switch of all indoor units.
- Page 19 Refer to page 7. Measure the voltage of solenoid coil's connector that corresponds to the indoor unit, which is operated. Indoor Terminal Connector for Replace the outdoor Model Is voltage 230V? unit block solenoid coil control control P.C. board. 21R3-CN85 21RB-CN81 MUX-A22WV 21R4-CN86...
- Page 20 TEST POINT DIAGRAM AND VOLTAGE MUX-A22WV - Outdoor control P.C. board To indoor unit C To indoor unit B To fan To fan motor Solenoid coil 21R3 Solenoid coil 21R4 capacitor 230V AC 50Hz 230V AC 50Hz 230V AC 50Hz...
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Page 21: Disassembly Instructions
1Hold the sleeve, and 2Pull the terminal while pull out the terminal pushing the locking slowly. Locking lever lever. Connector 12-1. MUX-A22WV - OUTDOOR UNIT OPERATING PROCEDURE PHOTOS 1.Removing the cabinet Photo 1 Top panel (1) Remove the screws of the top panel. - Page 22 OPERATING PROCEDURE PHOTOS 2. Removing the relay panel Photo 4 (1) Remove the cabinet. (Refer to 1.) Set screws of the (2) Disconnect the following connectors. Solenoid coil connector . Outdoor fan motor outdoor fan motor (21RB, 21R3, 21R4) . Solenoid coil (21RB, 21R3, 21R4) Back panel Outdoor fan motor connector...
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Page 23: Parts List
PARTS LIST MUX-A22WV - 13-1. OUTDOOR UNIT STRUCTURAL PARTS Part numbers that are circled are not shown in the illustration. Symbol Q'ty / unit Part Name Part No. in Wiring Remarks MUX-A22WV- Diagram TOP PANEL E02 636 297 MOTOR SUPPORT... - Page 24 E02 128 383 SURGE ABSORBER E07 056 374 TERMINAL BLOCK 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 Oct. 2003 Distributed in Oct. 2003. No.OB318 7 Specifications subject to change without notice.