Mitsubishi Electric MS-A30VD User Manual

CONTENTS
1. TECHNICAL CHANGES ····································2
2. PART NAMES AND FUNCTIONS······················3
3. SPECIFICATION·················································5
4. OUTLINES AND DIMENSIONS ·························6
5. WIRING DIAGRAM ············································7
6. REFRIGERANT SYSTEM DIAGRAM················9
7. SERVICE FUNCTIONS ····································10
8. TROUBLESHOOTING······································12
9. DISASSEMBLY INSTRUCTIONS ····················21
10. PARTS LIST······················································23
11. RoHS PARTS LIST···········································26
SPLIT-TYPE AIR CONDITIONERS
TM
MS-A18VD
MS-A24VD
MS-A30VD
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.
SERVICE MANUAL
Models
MS-A18VD-
MS-A18VD-
MS-A24VD-
MS-A24VD-
MS-A30VD-
MS-A30VD-
K2
K1
K2
K1
K2
K1
No. OB400
REVISED EDITION-C
INDOOR UNIT
Outdoor unit service manual
MU-A·VD Series (OB401)
Revision C:
• Another type of the electronic control P.C.
board (TYPE 2) has been added to the
original one (TYPE 1). They are both com-
patible with MS-A18/24/30VD- .
K
Please void OB400, REVISED EDITION-B.
OB400C--1.qxp 11.7.11 9:10 AM Page 1

Mitsubishi Electric MS-A30VD Specifications

General

Brand	Mitsubishi Electric
Model	MS-A30VD
Category	Air Conditioner
Language	English

Summary

Technical Changes

Specification

Outlines and Dimensions

Wiring Diagram

MS-A18VD/MS-A24VD Wiring

Wiring diagram for MS-A18VD and MS-A24VD indoor units.

MS-A30VD Wiring

Refrigerant System Diagram

MS-A18VD Refrigerant Diagram

MS-A24VD Refrigerant Diagram

MS-A30VD Refrigerant Diagram

Service Functions

Troubleshooting

Troubleshooting Cautions

Instruction of Troubleshooting

General troubleshooting flow chart for unit operation issues.

Troubleshooting Check Table

Details specific fault indications, symptoms, conditions, and remedies.

Trouble Criterion of Main Parts

Lists main parts and their check methods and criteria for troubleshooting.

Troubleshooting Flow - Indoor Fan Motor

Step-by-step guide for diagnosing indoor fan motor issues.

Troubleshooting Flow - Remote Controller

Step-by-step guide for diagnosing remote controller and receiver issues.

Troubleshooting Flow - Indoor Electronic Control PC Board

Step-by-step guide for diagnosing indoor electronic control PC board issues.

How to Check Mis-wiring

Procedure for checking mis-wiring and related issues.

Test Point Diagram and Voltage

Diagrams of PC boards showing test points and voltage references.

Disassembly Instructions