Table of Contents
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SPLIT-TYPE,AIR CONDITIONERS
SERVICE MANUAL
Multi system type
Models
MUX-19TV -
MUX-20TV -
MUX-25TV -
MUX-19TV -
E1
MUX-20TV -
E1
MUX-25TV -
E1
This manual describes technical data of outdoor unit.
For indoor unit refer to the service manuals No.OB227 REVISED EDITION-B and OB252 REVISED EDITION-A of corre-
sponding models.
E1
E1
E1
CONTENTS
1. TECHNICAL CHANGES ····································2
2. PART NAMES AND FUNCTIONS······················2
CORRESPONDENCE TABLE ···························3
4. SPECIFICATION·················································3
5. NOISE CRITERIA CURVES ······························ 6
6. OUTLINES AND DIMENSIONS ························ 7
7. WIRING DIAGRAM ············································9
8. REFRIGERANT SYSTEM DIAGRAM ··············10
9. PERFORMANCE CURVES ······························14
10. TROUBLESHOOTING······································26
11. DISASSEMBLY INSTRUCTIONS·····················32
12. PARTS LIST······················································35
13. OPTIONAL PARTS···········································37
No. OB284
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Table of Contents
Related Manuals for Mitsubishi Electric MUX-19TV - E1
Summary of Contents for Mitsubishi Electric MUX-19TV - E1
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Page 1: Table Of Contents
SPLIT-TYPE,AIR CONDITIONERS No. OB284 SERVICE MANUAL Multi system type Models MUX-19TV - MUX-20TV - MUX-25TV - CONTENTS 1. TECHNICAL CHANGES ····································2 2. PART NAMES AND FUNCTIONS······················2 3. INDOOR/OUTDOOR CORRESPONDENCE TABLE ···························3 4. SPECIFICATION·················································3 5. NOISE CRITERIA CURVES ······························ 6 6. OUTLINES AND DIMENSIONS ························ 7 7. -
Page 2: Technical Changes
TECHNICAL CHANGES MUX-19TV - MUX-20TV - MUX-25TV - New models PART NAMES AND FUNCTIONS OUTDOOR UNIT MUX-19TV - MUX-20TV - MUX-25TV - Air inlet (Back and side) Piping Drainage hose Air outlet... -
Page 3: Indoor/Outdoor Correspondence Table
INDOOR / OUTDOOR CORRESPONDENCE TABLE OUTDOOR UNIT MUX-19TV- MUX-20TV- MUX-25TV- A:07, B:12 A:09, B:09, C:09 A:12, B:12 There is no combination other than this table. SPECIFICATION Outdoor model MUX-19TV - Single phase Outdoor unit power supply 230V, 50Hz Opetate 1 unit Opetate 1 unit Opetate 2 unit Indoor unit No. - Page 4 Outdoor model MUX-20TV - Single phase Outdoor unit power supply 230V, 50Hz Opetate 1 unit Opetate 1 unit Opetate 2 unit Opetate 2 unit Opetate 3 unit Indoor unit No. B or C A+B or A+C A+B+C Capacity 1.75 2 2.4+2.7 2.4+1.75 2 Dehumidification...
- Page 5 Outdoor model MUX-25TV - Single phase Outdoor unit power supply 230V, 50Hz Opetate 1 unit Opetate 2 unit Indoor unit No. A or B Capacity 3.5 2 Dehumidification 1.6 2 Outdoor air flow High:2,760 / Low:1,920 K /h Power outlet Running current 6.11 12.42...
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Page 6: Noise Criteria Curves
NOISE CRITERIA CURVES MUX-19TV - MUX-25TV - SPL(dB LINE SPEED SPL(dB LINE SPEED MUX-20TV - High High Test conditions. Test conditions. Cooling :DB35: WB24: Cooling :DB35: WB24: 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... -
Page 7: Outlines And Dimensions
OUTLINES AND DIMENSIONS Unit: mm OUTDOOR UNIT MUX-19TV- Open as a rule 500mm or more if the front and both sides are open 100mm or more 200mm or more if 100mm or more Drainage 272.9 438.4 there are obstacles 3hoies {33 Air in to both sides Air in... -
Page 8: Outdoor Unit
Unit: mm OUTDOOR UNIT MUX-25TV- Open as a rule 500mm or more if the front and both sides are open 100mm or more 200mm or more if 100mm or more Drainage 272.9 438.4 there are obstacles 3hoies {33 Air in to both sides Air in Open as a rule... -
Page 9: Wiring Diagram
WIRING DIAGRAM MUX-19TV - MUX-25TV - MODELS WIRING DIAGRAM OUTDOOR UNIT POWER SUPPLY 230V 50Hz GRN/YLW CIRCUIT BREAKER OUTDOOR CONTROL PC BOARD CN90 X521 TO INDOOR X522 UNIT A CONNECTING TO INDOOR NR61 X522 X521 UNIT B CONNECTING CN91 2 3 4 MF61 SYMBOL NAME... -
Page 10: Refrigerant System Diagram
REFRIGERANT SYSTEM DIAGRAM MSC-07RV- MUX-19TV- Unit: mm MSC-12RV- INDOOR UNIT OUTDOOR UNIT Room temperature Refrigerant pipe thermistor {12.7 RT11 (With insulation) Indoor Stop valve heat with service port UNIT A exchanger MSC-12RV Flared connection Indoor coil Compressor(MC1) Stop valve thermistor RT12 Outdoor Refrigerant pipe... -
Page 11: Indoor Unit
Unit: mm MSC-09RV- MUX-20TV- INDOOR UNIT OUTDOOR UNIT Room temperature Refrigerant pipe thermistor {9.52 RT11 (With insulation) Indoor Stop valve heat with service port UNIT A exchanger MSC-09RV Flared connection Indoor coil Compressor(MC1) Stop valve thermistor RT12 Capillary tube Refrigerant pipe {6.35 Outdoor (With insulation) -
Page 12: Piping Preparation
MUX-20TV- MAX.REFRIGERANT PIPING LENGTH & MAX. HEIGHT DIFFERENCE Indoor unit C Indoor unit B Indoor unit A MSC-09RV - E3 MSC-09RV - E3 MSC-09RV - E3 Outdoor unit MUX-20TV - E1 UNIT No. Pipe length Height difference (H) No. of bends Max. - Page 13 MSC-12RV- MUX-25TV- Unit: mm INDOOR UNIT OUTDOOR UNIT Room Refrigerant pipe temperature {12.7 thermistor (With insulation) RT11 Indoor Stop valve heat with service port UNIT A exchanger MSC-12RV Flared connection Indoor coil Compressor(MC1) Stop valve thermistor RT12 Outdoor Capillary tube Refrigerant pipe heat {6.35...
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Page 14: Performance Curves
PERFORMANCE CURVES MSC-07RV - MUX-19TV - MSC-09RV - MUX-20TV - MSC-12RV - MUX-25TV - 9-1-1.CAPACITY AND THE INPUT CURVES (ONE INDOOR UNIT WITH ONE OUTDOOR UNIT) 11.6 10.2 11.2 11.6 10.6 10.2 10.6 9-1-2.OUTDOOR LOW PRESSURE AND OUTDOOR UNIT CURRENT COOL operation Both indoor and outdoor unit are under same temperature/humidity condition. - Page 15 MUX-20TV- Single operation (Unit B or C) Single operation (Unit A) (kgf/F•G)(MPa•G) (kgf/F•G)(MPa•G)
- Page 16 PERFORMANCE DATA COOL operation (230V) MSC-07RV - (Single) MUX-19TV - CAPACITY : 2.2 kW INPUT(Total=Indoor+Outdoor) : 780 W SHF : 0.74 OUTDOOR DB(;) INDOOR INDOOR DB(;) WB(;) SHC SHF INPUT SHC SHF INPUT SHC SHF INPUT SHC SHF INPUT 2.59 1.45 0.56 2.48...
- Page 17 PERFORMANCE DATA COOL operation (230V) MSC-07RV - (Single) MUX-19TV - CAPACITY : 2.2 kW INPUT(Total=Indoor+Outdoor) : 780 W SHF : 0.74 OUTDOOR DB(;) INDOOR INDOOR DB(;) WB(;) SHC SHF INPUT SHC SHF INPUT SHC SHF INPUT 0.56 2.16 1.21 0.56 1.98 1.11 0.56...
- Page 18 PERFORMANCE DATA COOL operation (230V) MSC-12RV - (Single) MUX-19TV - CAPACITY : 3.5 kW INPUT(Total=Indoor+Outdoor) : 1320W SHF : 0.67 OUTDOOR DB(;) INDOOR INDOOR DB(;) WB(;) SHC SHF INPUT SHC SHF INPUT SHC SHF INPUT SHC SHF INPUT 4.11 2.02 0.49 1056 3.94...
- Page 19 PERFORMANCE DATA COOL operation (230V) MSC-12RV - (Single) MUX-19TV - CAPACITY : 3.5 kW INPUT(Total=Indoor+Outdoor) : 1320W SHF : 0.67 OUTDOOR DB(;) INDOOR INDOOR SHC SHF INPUT SHC SHF INPUT SHC SHF INPUT DB(;) WB(;) 3.43 1.68 0.49 1294 3.15 1.54 0.49 1373...
- Page 20 PERFORMANCE DATA COOL operation (230V) MSC-09RV - (Single Room A) MUX-20TV - CAPACITY : 2.5 kW INPUT(Total=Indoor+Outdoor) : 810W SHF : 0.70 OUTDOOR DB(;) INDOOR INDOOR DB(;) WB(;) SHC SHF INPUT SHC SHF INPUT SHC SHF INPUT SHC SHF INPUT 2.94 1.53 0.52...
- Page 21 PERFORMANCE DATA COOL operation (230V) MSC-09RV - (Single Room A) MUX-20TV - CAPACITY : 2.5 kW INPUT(Total=Indoor+Outdoor) : 810W SHF : 0.70 OUTDOOR DB(;) INDOOR INDOOR DB(;) WB(;) SHC SHF INPUT SHC SHF INPUT SHC SHF INPUT 2.25 1.17 2.08 1.08 0.52 2.45...
- Page 22 PERFORMANCE DATA COOL operation (230V) MSC-09RV - (Single Room B or C) : MUX-20TV - CAPACITY : 2.7 kW INPUT(Total=Indoor+Outdoor) : 1000W SHF : 0.69 OUTDOOR DB(;) INDOOR INDOOR DB(;) WB(;) SHC SHF INPUT SHC SHF INPUT SHC SHF INPUT SHC SHF INPUT 3.04 1.55...
- Page 23 PERFORMANCE DATA COOL operation (230V) MSC-09RV - (Single Room B or C) : MUX-20TV - CAPACITY : 2.7 kW INPUT(Total=Indoor+Outdoor) : 1000W SHF : 0.69 OUTDOOR DB(;) INDOOR INDOOR DB(;) WB(;) SHC SHF INPUT SHC SHF INPUT SHC SHF INPUT 2.65 1.35 0.51...
- Page 24 PERFORMANCE DATA COOL operation (230V) MSC-12RV - (Single) MUX-25TV - CAPACITY : 3.5 kW INPUT(Total=Indoor+Outdoor) : 1390W SHF : 0.67 OUTDOOR DB(;) INDOOR INDOOR DB(;) WB(;) SHC SHF INPUT SHC SHF INPUT SHC SHF INPUT SHC SHF INPUT 1112 3.94 1.93 1168 3.78...
- Page 25 PERFORMANCE DATA COOL operation (230V) MSC-12RV - (Single) MUX-25TV - CAPACITY : 3.5 kW INPUT(Total=Indoor+Outdoor) : 1390W SHF : 0.67 OUTDOOR DB(;) INDOOR INDOOR SHC SHF INPUT SHC SHF INPUT SHC SHF INPUT DB(;) WB(;) 3.43 1.68 0.49 1362 3.15 1.54 0.49 1446...
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Page 26: Troubleshooting
TROUBLESHOOTING MUX-19TV - MUX-20TV - MUX-25TV - 10-1. 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 27: A Check Of Indoor Fan Motor
10-3. Trouble criterion of main parts Part name Check method and criterion Figure Measure the resistance between the terminals with a tester. (Coil wiring temperature-10°C ~ 40°C) Normal Abnormal Compressor MUX-19TV- MUX-20TV- MUX-25TV- RH220VHAT RH135VHAT RH140VHAT RH174VHAT RH231VHAT Opened or 1.87~2.30"... -
Page 28: Check Of Remote Controller And Receiver P.c. Board
Check of remote controller and receiver P.C. board Indoor unit operates by pressing the EMERGENCY OPERATION switch, but does not operate with the remote controller. wCheck the remote controller is exclusive for this air conditioner. wReplace the receiver P.C. board together with the indoor control P.C. board. Switch on the remote controller. -
Page 29: Check Of Outdoor Unit
Check of outdoor unit Compressor and outdoor fan do not operate. Start Check the voltage of terminal block outdoor unit L - N. AC220~240V between Check the outdoor power supply and connection. Reconfirmed Check the voltage of terminal block of indoor unit. - Page 30 Compressor does not operate. Start Turn OFF power supply (indoor / out- door unit). Replace the compressor. Is the connection of Check the compressor. Check the outdoor control Compressor wiring from terminal block See page 27. P.C. board. does not operate. to compressor correct? Is it normal? See page 31.
- Page 31 TEST POINT DIAGRAM AND VOLTAGE MUX-19TV - MUX-20TV - MUX-25TV - Outdoor control P.C. board Solenoid coil 21R3 Fan capacitor Solenoid coil 21RB Solenoid coil 21R4 Fan capacitor Fan motor From indoor To compressor unit A 12V DC 1+, 3– To terminal block From indoor...
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Page 32: Disassembly Instructions
DISASSEMBLY INSTRUCTIONS <"Terminal with lock mechanism" Detaching points> In case of terminal with lock mechanism detach the terminal as shown below. 1Slide the sleeve. 1Hold the sleeve, and 2Pull the terminal while pull out the terminal pushing the locking slowly. lever. - Page 33 OPERATING PROCEDURE PHOTOS 2. Removing the relay panel. Photo 4 (1) Remove the cabinet. (Refer to 1) (2) Disconnect the following connectors. . Outdoor fan motor Solemoid coil connector . Solenoid coil (21RB, 21R3, 21R4) <Only MUX-20> Outdoor fan motor (21RB, 21R3, 21R4) set screws Outdoor fan...
- Page 34 OPERATING PROCEDURE PHOTOS 5. Removing the compressor. (A,B) Photo 7 (1) Remove the cabinet. (Refer to 1) (2) Remove the relay panel. (Refer to 2) (3) Remove the terminal cover. (4) Pull out lead from the compressor. Terminal cover (5) Remove the suction pipe welded section and discharge Suction pipe pipe welded section using a burner.
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Page 35: Parts List
PARTS LIST 12-1. OUTDOOR UNIT FUNCTIONAL PARTS AND ELECTRICAL PARTS MUX-19TV - MUX-20TV - MUX-25TV - 12-1. OUTDOOR UNIT FUNCTIONAL PARTS AND ELECTRICAL PARTS Part numbers that are circled is not shown in the illustration. Symbol Q'ty / unit in Wiring Parts No. - Page 36 12-2. OUTDOOR UNIT STRUCTURAL PARTS MUX-19TV - MUX-20TV - MUX-25TV - Part numbers that are circled is not shown in the illustration. Symbol Q'ty / unit in Wiring Parts No. Parts Name Remarks MUX-19TV- MUX-20TV- MUX-25TV- Diagram E02 636 297 TOP PANEL E02 636 515 MOTOR SUPPORT...
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Page 37: Optional Parts
OPTIONAL PARTS 13-1. AIR CLEANING FILTER AIR CLEANING FILTER removes fine dust of 0.01 micron from air by means of static electricity. Normal life of AIR CLEANING FILTER is 3 months. However, when it becomes dirty, replace it as soon as possible. Clogged AIR CLEANING FILTER may reduce the air conditioner capacity or cause frost on the air outlet. - Page 40 HEAD OFFICE: MITSUBISHI DENKI BLDG.,2-2-3, MARUNOUCHI, CHIYODA-KU, TOKYO100-8310, JAPAN C C Copyright 2001 MITSUBISHI ELECTRIC ENGINEERING CO.,LTD. New publication, effective Apr. 2001 Distributed in Apr. 2001. No.OB284 248 Specifications subject to change without notice. Made in Japan...
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