Mitsubishi Electric MU-12RV Manuals

Manuals and User Guides for Mitsubishi Electric MU-12RV. We have 3 Mitsubishi Electric MU-12RV manuals available for free PDF download: Service Manual

Mitsubishi Electric MU-12RV Service Manual (187 pages)

Wireless / Multi System / Inverter controlled multi system type, SPLIT-TYPE / HEAT PUMP AIR CONDITIONERS

Brand: Mitsubishi Electric | Category: Air Conditioner | Size: 2.77 MB

Table of Contents
1
Service Manual
1
Technical Changes
2
Part Names and Functions
4
- Product View
  4
- Remote Controller
  6
Indoor/Outdoor Correspondence Table
7
Indoor Units Combination
8
- Specifications
  13
- For Inverter Multi System
  17
Noise Criteria Curves
19
Tereshold of
20
Outlines and Dimensions
22
Wiring Diagram
28
Noise
33
Noise
34
Refrigerant System Diagram
35
Performance Curves
46
Microprocessor Control
102
- Wireless Remote Controller
  102
- Cool Operation
  103
- Dry Operation
  103
- Coil Frost Prevention
  104
- Fan Operation
  104
- Indoor Fan Speed Control
  104
- Cold Air Prevention Control
  105
- Flow Soft Control
  105
- Warm Air Control
  105
- Defrosting
  106
- "I Feel Control" Operation
  107
- Cool Mode of "I Feel Control"
  108
- Temperatures Buttons
  108
- The Initial Set Temperature
  108
- Auto Vane Operation
  109
- Fan Motor Control
  109
- Swing Mode
  109
- Vane Auto Mode
  109
- Cold Air Prevention in HEAT Operation
  110
- Econo Cool Operation (Economical Operation)
  110
- Timer Operation
  110
- Emergency-Test Operation
  111
- Program Timer
  111
- Inverter Multi System Control
  112
- System Organization
  112
- LEV Control
  114
- Standard LEV Opening
  114
- LEV Opening Correction by Discharge Temperature
  115
- LEV Opening Correction by Gas Pipe Temperature
  115
- LEV Opening Correction by Suction Super Heat
  115
- Control by the Number of Operating Indoor Unit
  116
- Outdoor Fan Control
  116
- Selection of Operation Mode
  116
- Operational Frequency Range
  117
- Defrosting in Heating
  118
- High and Low Pressure Protection
  118
- Discharge Temperature Protection
  119
- Refrigerant Recovery in Heating
  119
- Sensors and Actuators
  119
- Change in Defrost Setting
  120
- PC Boad Modification for Individual Operation
  120
Service Functions
120
- Timer Short Mode
  120
- MU Type / MUH Type Switch over and Auto Restart Function
  121
Troubleshooting
122
- Indoor Unit Dose Not Operate (Different Modes)
  124
- Troubleshooting Check Table Indoor Unit
  125
- Outdoor Unit Troubleshooting Table
  126
- Trouble Criterion of Main Parts
  128
- Check of Indoor Fan Motor
  132
- Check of Remote Controller and Receiver P.C. Board
  132
- Check of Indoor Electronic Control P.C. Board
  133
- Check of Outdoor Unit
  133
- Checking Mis-Wiring/Serial Signal Error (Outdoor Unit Does Not Work)
  135
- Check of Open Phase
  136
- Check of Resistance (Transistor Module)
  136
- Simple Check Methods for Inverter/ Compressor
  136
- Check of Compressor
  137
- Check of Compressor Operation
  137
- Check of Compressor Winding
  137
- Check of Outdoor Thermistor
  138
- Check of Reversing Valve Coil
  138
- Check of Outdoor Fan Motor
  139
- Check of Power Supply
  139
- Check of Rush Current Control Circuit
  139
- Check of Solenoid Coil
  139
- Check of Hi/Low Pressure Switch and Compressor Thermostat Circuits
  140
- Check of Liner Expansion Valve (LEV)
  140
- Check of Mis-Wiring or Mis-Piping
  140
- The Other Cases
  141
- Test Point Diagram and Voltage
  142
- Outdoor Unit Electronic Control P.C. Board
  144
- Relay P.C. Board
  145
- Electronic Control P.C.board
  146
- I.P.M. P.C.board
  147
- Noise Filter P.C.board
  147
- Relay P.C.board
  147
Disassembly Instructions
148
- Accessory Part
  166
- Indoor Unit Structural Parts
  166
Parts List
166
- Indoor Unit Electrical Parts
  167
- Outdoor Unit Structural Parts
  168
- Outdoor Unit Functional Parts and Electrical Parts
  169
- Air Cleaning Filter
  184
- Deodorizing Filter
  184
- Different-Diameter Pipe
  184
Optional Parts
184
Outlet Guide
185

Mitsubishi Electric MU-12RV Service Manual (25 pages)

SPLIT-TYPE,AIR CONDITIONERS; SPLIT-TYPE,HEAT PUMP AIR CONDITIONERS

Brand: Mitsubishi Electric | Category: Air Conditioner | Size: 0.73 MB

Service Manual

1
- Technical Changes
  3
  - Remote Controller
    4
- Part Names and Functions
  6
- Refrigerant System Diagram
  8
- Parts List
  9
  - Outdoor Unit
    12
  - Accessory Parts
    14
Table of Contents

25

Mitsubishi Electric MU-12RV Service Manual (21 pages)

SPLIT-TYPE,AIR CONDITIONERS SPLIT-TYPE,HEAT PUMP AIR CONDITIONERS

Brand: Mitsubishi Electric | Category: Air Conditioner | Size: 0.94 MB

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