Mitsubishi Electric MSH-A18ND User Manual

CONTENTS
1. TECHNICAL CHANGES ····································2
2. PART NAMES AND FUNCTIONS······················2
3. SPECIFICATION·················································4
4. OUTLINES AND DIMENSIONS ·························5
5. WIRING DIAGRAM ············································6
6. REFRIGERANT SYSTEM DIAGRAM················7
7. SERVICE FUNCTIONS ······································8
8. TROUBLESHOOTING······································10
9. DISASSEMBLY INSTRUCTIONS ····················18
10. PARTS LIST······················································20
11. RoHS PARTS LIST···········································23
SPLIT-TYPE, HEAT PUMP AIR CONDITIONERS
Outdoor unit service manual
MUH-A·ND Series (OB428)
MSH-A18ND
MSH-A24ND
TM
Wireless type
Models
MSH-A18ND -
MSH-A24ND -
S1
S1
SERVICE MANUAL
INDOOR UNIT
No. OB427
REVISED EDITION-B
Please void OB427 REVISED EDITION-A.
Revision B:
•Remote controller model has been changed.
•RoHS PARTS LIST has been added.
NOTE:
This service manual describes technical data of the indoor units.
RoHS compliant products have <G> mark on the spec name plate.
For servicing of RoHS compliant products, refer to the RoHS PARTS LIST (RoHS compliant).
OB427B-1.qxp 07.5.16 3:30 PM Page 1

Mitsubishi Electric MSH-A18ND Specifications

General

Brand	Mitsubishi Electric
Model	MSH-A18ND
Category	Air Conditioner
Language	English

Summary

Part Names and Functions Overview

Indoor Unit Component Identification

Remote Controller Operation

Remote Controller Functions

Technical Specifications

Outlines and Dimensions

Wiring Diagrams

MSH-A18ND Wiring Diagram

Provides the electrical wiring diagram for the MSH-A18ND indoor unit.

MSH-A24ND Wiring Diagram

Provides the electrical wiring diagram for the MSH-A24ND indoor unit.

Refrigerant System Diagrams

MSH-A18ND Refrigerant Diagram

Illustrates the refrigerant flow and components for the MSH-A18ND indoor unit.

MSH-A24ND Refrigerant Diagram

Illustrates the refrigerant flow and components for the MSH-A24ND indoor unit.

Troubleshooting Guide

Troubleshooting Cautions

Outlines important safety and handling precautions before starting troubleshooting.

Troubleshooting Flowchart

Troubleshooting Check Table

Trouble Criteria for Main Parts

Specific Troubleshooting Flows

Checking for Mis-wiring

Test Point and Voltage Diagrams

Disassembly Instructions

Front Panel Removal

Electronic Board and Receiver Removal

Parts List (Non-RoHS Compliant)

Indoor Unit Structural Parts

Indoor Unit Heat Exchanger Parts

Indoor Unit Functional and Electrical Parts

RoHS Compliant Parts List

RoHS Indoor Unit Structural Parts

RoHS Indoor Unit Heat Exchanger Parts

RoHS Indoor Unit Functional and Electrical Parts