Mitsubishi MSH-24RV - User Manual

SERVICE MANUAL
CONTENTS
1. TECHNICAL CHANGES ····································2
2. PART NAMES AND FUNCTIONS······················2
3. SPECIFICATION·················································6
4. NOISE CRITERIA CURVES·······························8
5. OUTLINES AND DIMENSIONS ······················ 10
6. WIRING DIAGRAM ··········································13
7. REFRIGERANT SYSTEM DIAGRAM··············17
8. PERFORMANCE CURVES······························20
9. MICROPROCESSOR CONTROL ····················36
10. SERVICE FUNCTIONS·····································50
11. TROUBLESHOOTING······································52
12. DISASSEMBLY INSTRUCTIONS·····················71
13. PARTS LIST······················································79
14. OPTIONAL PARTS···········································88
Wireless type
Models
MSH-18RV -
(
WH
)
· MUH-18RV -
· MUH-18RV -
MSH-24RV -
(
WH
)
· MUH-24RV -
MSH-30RV -
(
WH
)
· MUH-30RV -
E1E1
E1E1
E2
E1E1
No. OB272
REVISED EDITION-A
SPLIT-TYPE, HEAT PUMP AIR CONDITIONERS
MSH-18RV -
MSH-24RV -
E1
E1
Revision:
● MUH-18RV- has been added.
MUH-18RV- ➔ MUH-18RV-
•Path of outdoor heat exchanger has changed.
E2E1
E2
•Refer to the Service Manual OB185 REVISED EDITION C when MSH-18RV- is connected
with MXZ-32NV- or MXZ-32NV- as multi system units.
•Refer to the Service Manual OB227 REVISED EDITION-B when MSH-18RV- is connected
with MXZ-32RV- as multi system units.
•Refer to the Service Manual OB254 when MSH-18RV- is connected with MXZ-32SV- as
multi system units.
E1E1
E1
E1
E2E1
E1
OB272-1.qxp 02.1.26 1:22 PM Page 1

Mitsubishi MSH-24RV Specifications

General

Brand	Mitsubishi
Model	MSH-24RV
Category	Air Conditioner
Language	English

Summary

Mitsubishi Electric Air Conditioner Service Manual

Technical Changes Overview

Details modifications and updates across different models and revisions.

Part Names and Functions

Identifies and describes components of indoor and outdoor units, including accessories.

Specifications and Ratings

Provides detailed technical specifications for cooling and heating operations.

Noise Criteria Curves

Presents noise level data across frequency bands for various operating conditions.

Outlines and Dimensions

Shows the physical dimensions and installation outlines for indoor and outdoor units.

Wiring Diagrams

Illustrates electrical connections for indoor and outdoor unit components and control boards.

Refrigerant System Diagrams

Depicts refrigerant flow paths, piping sizes, and component layouts for different unit configurations.

Performance Curves and Data Tables

Presents operational performance data, curves, and characteristics for cooling and heating.

Microprocessor Control Operations

Explains remote controller functions, unit modes, and operational controls managed by the microprocessor.

Service Functions and Adjustments

Details service-specific functions like defrost control, timer settings, and auto restart.

Troubleshooting Guide

Provides diagnostic procedures, flowcharts, check tables, and component criteria for issue resolution.

Disassembly and Reassembly Instructions

Offers step-by-step guides for safely dismantling and reassembling indoor and outdoor unit components.

Parts Lists

Lists all structural, functional, electrical, and accessory parts for indoor and outdoor units with part numbers.

Optional Parts Information

Describes available optional parts such as air cleaning and deodorizing filters.