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Mitsubishi Electric MU-07RV User Manual

Mitsubishi Electric MU-07RV
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SERVICE MANUAL
SPLIT-TYPE,AIR CONDITIONERS
SPLIT-TYPE,HEAT PUMP AIR CONDITIONERS
CONTENTS
1. TECHNICAL CHANGES ····································2
2. PART NAMES AND FUNCTIONS······················4
3. INDOOR/OUTDOOR
CORRESPONDENCE TABLE ···························7
4. INDOOR UNITS COMBINATION ·······················8
5. SPECIFICATION···············································13
6. NOISE CRITERIA CURVES···························· 19
7. OUTLINES AND DIMENSIONS ······················ 22
8. WIRING DIAGRAM ··········································28
9. REFRIGERANT SYSTEM DIAGRAM··············35
10. PERFORMANCE CURVES······························46
11. MICROPROCESSOR CONTROL···················102
12. SERVICE FUNCTIONS···································120
13. TROUBLESHOOTING····································122
14. DISASSEMBLY INSTRUCTIONS···················148
15. PARTS LIST····················································166
16. OPTIONAL PARTS·········································184
Wireless type
Models
MSC-07RV -
(
WH
)
· MU-07RV -
MSC-09RV -
(
WH
)
· MU-09RV -
MSC-12RV -
(
WH
)
· MU-12RV -
MSC-07RV -
(
WH
)
· MUH-07RV -
MSC-09RV -
(
WH
)
· MUH-09RV -
MSC-12RV -
(
WH
)
· MUH-12RV -
Multi system type
MSC-07RV -
(
WH
)
· MUX-10RV -
MSC-09RV -
(
WH
)
· MUX-18RV -
MSC-12RV -
(
WH
)
· MUX-24RV -
Inverter controlled multi system type
· MXZ-18RV -
· MXZ-32RV -
E1
E1
E1E1
E1E1
E1E1
E1E1
E1E1
E1E1
E1E1
E1E1
E1E1
No. OB227
REVISED EDITION-B
MSC-07RV -
MSC-09RV -
MSC-12RV -
E1
E1
E1
Revision:
MUX-10/18/24RV - has been added.
MXZ-18/32RV - has been added.
Noise criteria curves has been added.
Performance data has been added.
Specification has been partially modified.
Refrigerant system diagram has been partially
modified.
• Please void OB227 REVISED EDITION-A
E1
E1
NOTE: (Only MXZ-32RV - )
This manual describes technical data of MSC
type indoor unit .
For other indoor unit refer to the service manuals
No. OB229 REVISED EDITION-A of correspond-
ing models.
E1

Table of Contents

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Mitsubishi Electric MU-07RV Specifications

General IconGeneral
BrandMitsubishi Electric
ModelMU-07RV
CategoryAir Conditioner
LanguageEnglish

Summary

Technical Changes

SW2 Addition and Auto Restart Function

Details about SW2 addition and settings for Auto Restart Function.

Sleep Mode Function Removed

Removal of the Sleep Mode function.

ECONO COOL Operation Added

Addition of the ECONO COOL operation feature.

SWING Button Removed

SWING button removed; Vane Control available.

Outdoor Model Name Changes

Change in outdoor model names for MU, MUH, and MXZ series.

Part Names and Functions

INDOOR UNIT Components

Identification and functions of components within the indoor unit.

OUTDOOR UNIT Components

Identification and functions of components within the outdoor unit.

Indoor/Outdoor Correspondence Table

Indoor Units Combination

MXZ-18RV Combinations

Table showing indoor unit combinations for MXZ-18RV.

MXZ-32RV Combinations

Table showing indoor unit combinations for MXZ-32RV.

Specifications

Indoor Unit Specifications

Specifications for MSC-07RV, MSC-09RV, MSC-12RV indoor units.

Outdoor Unit Specifications (MU Series)

Specifications for MU-07RV, MU-09RV, MU-12RV outdoor units.

Indoor Unit Specifications (MSC Series)

Specifications for MSC-07RV, MSC-09RV indoor units.

Outdoor Unit Specifications (MUX Series)

Specifications for MUX-10RV, MUX-18RV, MUX-24RV outdoor units.

Indoor Unit Specifications (Multi System)

Specifications for MSC-07RV, MSC-09RV, MSC-12RV when used in multi systems.

Outdoor Unit Specifications (MXZ Series)

Specifications for MXZ-18RV and MXZ-32RV outdoor units.

Noise Criteria Curves

MSC Series Noise Curves

Noise criteria curves for MSC-07RV, MSC-09RV, MSC-12RV indoor units.

MU Series Noise Curves

Noise criteria curves for MU-07RV, MU-09RV, MU-12RV outdoor units.

MUH Series Noise Curves

Noise criteria curves for MUH-07RV, MUH-09RV, MUH-12RV outdoor units.

MUX Series Noise Curves

Noise criteria curves for MUX-10RV, MUX-18RV outdoor units.

MUX-24RV Noise Curves

Noise criteria curves for MUX-24RV outdoor unit.

MXZ Series Noise Curves

Noise criteria curves for MXZ-18RV and MXZ-32RV outdoor units.

Outlines and Dimensions

INDOOR UNIT Dimensions

Outline and dimensions of MSC-07RV, MSC-09RV, MSC-12RV indoor units.

MU Series Outdoor Unit Dimensions

Outline and dimensions of MU-07RV, MU-09RV, MU-12RV outdoor units.

MUX Series Outdoor Unit Dimensions

Outline and dimensions of MUX-10RV, MUX-18RV outdoor units.

MUX-24RV Outdoor Unit Dimensions

Outline and dimensions of MUX-24RV outdoor unit.

MXZ-18RV Outdoor Unit Dimensions

Outline and dimensions of MXZ-18RV outdoor unit.

MXZ-32RV Outdoor Unit Dimensions

Outline and dimensions of MXZ-32RV outdoor unit.

Wiring Diagram

INDOOR UNIT Wiring

Wiring diagram for MSC-07RV, MSC-09RV, MSC-12RV indoor units.

MU Series Outdoor Unit Wiring

Wiring diagrams for MU-07RV, MU-09RV, MU-12RV outdoor units.

MUH Series Outdoor Unit Wiring

Wiring diagrams for MUH-07RV, MUH-09RV, MUH-12RV outdoor units.

MUX-10RV Outdoor Unit Wiring

Wiring diagram for MUX-10RV outdoor unit.

MUX-18RV Outdoor Unit Wiring

Wiring diagram for MUX-18RV outdoor unit.

MUX-24RV Outdoor Unit Wiring

Wiring diagram for MUX-24RV outdoor unit.

MXZ-18RV Outdoor Unit Wiring

Wiring diagram for MXZ-18RV outdoor unit.

MXZ-32RV Outdoor Unit Wiring

Wiring diagram for MXZ-32RV outdoor unit.

Refrigerant System Diagram

MSC Series Indoor Units

Refrigerant system diagram for MSC-07RV, MSC-09RV, MSC-12RV indoor units.

MU Series Outdoor Units

Refrigerant system diagram for MU-07RV, MU-09RV, MU-12RV outdoor units.

MSC/MUH Series Refrigerant Diagrams

Refrigerant system diagrams for MSC/MUH series units.

MUX Series Refrigerant Diagrams

Refrigerant system diagrams for MUX series units.

MXZ Series Refrigerant Diagrams

Refrigerant system diagrams for MXZ-18RV and MXZ-32RV units.

Performance Curves

INDOOR UNIT Performance Curves

Performance curves for indoor units showing capacity and input.

OUTDOOR UNIT Performance Curves

Performance curves for outdoor units showing capacity and input.

Capacity and Input Curves (Single Unit)

Performance curves for single indoor/outdoor unit combinations.

Outdoor Low Pressure & Current (Cooling)

Performance curves for outdoor low pressure and current in COOL mode.

Outdoor Low Pressure & Current (MXZ Series)

Performance curves for outdoor low pressure and current.

Performance Data (Cooling 220V)

Performance data tables for cooling operation at 220V.

Performance Data (Cooling 240V)

Performance data tables for cooling operation at 240V.

Performance Data (Heating 220V)

Performance data tables for heating operation at 220V.

Microprocessor Control

Wireless Remote Controller

Explanation of wireless remote controller functions and buttons.

Indoor Unit Display Section

Explanation of the operation indicator lamp on the indoor unit.

COOL Operation

Operation details for COOL mode, including fan speed and frost prevention.

DRY Operation

Operation details for DRY mode, including fan speed and compressor control.

FAN Operation

Operation details for FAN mode, only indoor fan operates.

HEAT Operation

Operation details for HEAT mode, including fan speed and cold air prevention.

I FEEL CONTROL Operation

Operation mode for personalized comfort control based on room temperature.

FAN MOTOR CONTROL

Control of fan motor speed using rotational frequency feedback.

AUTO VANE OPERATION

Automatic control of horizontal vane angle for optimal air distribution.

Service Functions

Compulsory Defrosting Mode

Procedure for forcing defrosting mode for service purposes.

Defrost Setting Changes

Changing defrost interval time and temperature settings.

Timer Short Mode

Shortening timer operation intervals for service.

PC Board Modification for Individual Operation

Modifying PC boards for individual indoor unit operation.

MU/MUH Type Switch and Auto Restart

Switching between MU and MUH types and setting auto-restart function.

Troubleshooting

Cautions on Troubleshooting

General precautions and checks before starting troubleshooting.

Troubleshooting Procedure

Steps to follow when diagnosing issues using indicator lamps and charts.

Remote Controller Battery Replacement

Procedure for replacing remote controller batteries and resetting.

Instruction of Troubleshooting (Flowcharts)

Flowcharts for troubleshooting common operational issues.

Troubleshooting Check Table (Indoor Unit)

Table of indoor unit symptoms, detection methods, and check points.

Troubleshooting Check Table (Outdoor Unit)

Table of outdoor unit symptoms, detection methods, and check points.

Trouble Criterion of Main Parts

Room Temperature Thermistor Criterion

Check method and criterion for room temperature thermistor.

Indoor Coil Thermistor Criterion

Check method and criterion for indoor coil thermistor.

Indoor Fan Motor Criterion

Check method and criterion for indoor fan motor.

Vane Motor Criterion

Check method and criterion for vane motor.

Defrost Thermistor Criterion

Check method and criterion for defrost thermistor.

Compressor Criterion

Check method and criterion for compressor.

Outdoor Fan Motor Criterion

Check method and criterion for outdoor fan motor.

Linear Expansion Valve Criterion

Check method and criterion for linear expansion valve.

Pressure Switch & Thermistor Criteria

Check method and criterion for pressure switches and compressor thermistor.

Inverter Multi System Control

System Organization (MXZ-18RV)

Block diagram showing the system organization of MXZ-18RV.

System Organization (MXZ-32RV)

Block diagram showing the system organization of MXZ-32RV.

LEV Control

Control logic for linear expansion valve (LEV).

Control by Number of Indoor Units

Control logic based on the number of operating indoor units.

Selection of Operation Mode

Rules for selecting operation mode in multi-systems.

Outdoor Fan Control

Outdoor fan control based on compressor status and protection.

Operational Frequency Range

Compressor operational frequency range for cooling and heating.

Defrosting in Heating

Defrosting conditions and details during heating operation.

High and Low Pressure Protection

Protection mechanisms against high and low pressure.

Discharge Temperature Protection

Protection against high discharge temperature.

Refrigerant Recovery in Heating

Refrigerant recovery process during heating operation.

Sensors and Actuators

Table relating sensors to their purpose and actuators.

Disassembly Instructions

Removing the Front Panel (Indoor Unit)

Step-by-step instructions for removing the front panel of the indoor unit.

Removing Indoor Control Boards

Instructions for removing the electronic and display P.C. boards from the indoor unit.

Removing Electrical Box (Indoor Unit)

Steps for removing the electrical box from the indoor unit.

Removing Vane Motor (Indoor Unit)

Instructions for removing the vane motor from the indoor unit.

Removing Fan Motor (Indoor Unit)

Steps for removing the line flow fan and indoor fan motor.

MU Outdoor Unit Disassembly

Instructions for disassembling MU series outdoor units.

MUH Outdoor Unit Disassembly

Instructions for disassembling MUH series outdoor units.

MUX-10RV Outdoor Unit Disassembly

Instructions for disassembling MUX-10RV outdoor unit.

MUX-18RV Outdoor Unit Disassembly

Instructions for disassembling MUX-18RV outdoor unit.

MUX-24RV Outdoor Unit Disassembly

Instructions for disassembling MUX-24RV outdoor unit.

MXZ-18RV Outdoor Unit Disassembly

Instructions for disassembling MXZ-18RV outdoor unit.

MXZ-32RV Outdoor Unit Disassembly

Instructions for disassembling MXZ-32RV outdoor unit.

Parts List

INDOOR UNIT STRUCTURAL PARTS

List of structural parts for MSC-07RV, MSC-09RV, MSC-12RV indoor units.

ACCESSORY PARTS (Indoor)

List of accessory parts, including remote controller holder.

INDOOR UNIT ELECTRICAL PARTS

List of electrical parts for MSC-07RV, MSC-09RV, MSC-12RV indoor units.

INDOOR UNIT HEAT EXCHANGER Parts

List of parts for indoor unit heat exchangers.

OUTDOOR UNIT STRUCTURAL PARTS (MU Series)

List of structural parts for MU-07RV, MU-09RV, MU-12RV outdoor units.

OUTDOOR UNIT STRUCTURAL PARTS (MUH Series)

List of structural parts for MUH-07RV, MUH-09RV, MUH-12RV outdoor units.

OUTDOOR UNIT FUNCTIONAL & ELECTRICAL PARTS (MUH Series)

List of functional and electrical parts for MUH outdoor units.

OUTDOOR UNIT FUNCTIONAL & ELECTRICAL PARTS (MUX Series)

List of functional and electrical parts for MUX-10RV outdoor unit.

OUTDOOR UNIT PARTS (MUX-18RV)

List of functional, electrical, and structural parts for MUX-18RV outdoor unit.

OUTDOOR UNIT FUNCTIONAL & ELECTRICAL PARTS (MUX-24RV)

List of functional and electrical parts for MUX-24RV outdoor unit.

OUTDOOR UNIT STRUCTURAL PARTS (MUX-24RV)

List of structural parts for MUX-24RV outdoor unit.

OUTDOOR UNIT ELECTRICAL PARTS (MXZ-18RV)

List of electrical parts for MXZ-18RV outdoor unit.

OUTDOOR UNIT FUNCTIONAL PARTS (MXZ-18RV)

List of functional parts for MXZ-18RV outdoor unit.

OUTDOOR UNIT ELECTRICAL PARTS (MXZ-32RV)

List of electrical parts for MXZ-32RV outdoor unit.

OUTDOOR UNIT STRUCTURAL PARTS (MXZ-32RV)

List of structural parts for MXZ-32RV outdoor unit.

OUTDOOR UNIT FUNCTIONAL PARTS (MXZ-32RV)

List of functional parts for MXZ-32RV outdoor unit.

REMOTE CONTROLLER Parts

List of parts for the remote controller.

ACCESSORY PARTS

List of accessory parts like drain sockets.

Optional Parts

Air Cleaning Filter

Information on the air cleaning filter, its function, and maintenance.

Deodorizing Filter

Information on the deodorizing filter, its cleaning, and replacement.

Different-diameter Pipe Selection

Selection guide for different-diameter pipes for multi-systems.

Outlet Guide

Information on the outlet guide for changing air discharge direction.

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