Mitsubishi Electric MS-A15ND User Manual

SERVICE MANUAL
CONTENTS
1. TECHNICAL CHANGES ····································2
2. PART NAMES AND FUNCTIONS······················3
3. SPECIFICATION·················································4
4. OUTLINES AND DIMENSIONS ·························5
5. WIRING DIAGRAM ············································6
6. REFRIGERANT SYSTEM DIAGRAM················6
7. SERVICE FUNCTIONS ······································7
8. TROUBLESHOOTING········································9
9. DISASSEMBLY INSTRUCTIONS ····················18
10. PARTS LIST······················································20
Wireless type
Models
SPLIT-TYPE, AIR CONDITIONERS
MS-A08VD-
MS-A10VD-
MS-A13VD-
P1
P1
P1
TM
No. OB396
Indication of model name
MS-A08VD -
MS-A10VD -
MS-A13VD -
P1
P1
P1
NOTE:
• This service manual describes technical data of indoor units.
• As for outdoor units MU-A08VD - ,MU-A10VD - and MU-A13VD - , refer to the service manual OB397.
P1P1P1
OB396--1.qxp 05.3.18 8:59 AM Page 1

Mitsubishi Electric MS-A15ND Specifications

General

Brand	Mitsubishi Electric
Model	MS-A15ND
Category	Air Conditioner
Language	English

Summary

TECHNICAL CHANGES

PART NAMES AND FUNCTIONS

ACCESSORIES

Lists various accessories provided with the indoor unit.

SPECIFICATION

REMOTE CONTROLLER

Details about the wireless remote controller, its buttons, and features.

OUTLINES AND DIMENSIONS

WIRING AND REFRIGERANT DIAGRAMS

SERVICE FUNCTIONS

TIMER SHORT MODE

Explains how to shorten set times for service purposes by short-circuiting specific points.

P.C. BOARD MODIFICATION FOR INDIVIDUAL OPERATION

Details modifications to the P.C. board for individual indoor unit operation with multiple remotes.

AUTO RESTART FUNCTION

Describes the function that resumes operation settings after a power failure.

TROUBLESHOOTING

CAUTIONS ON TROUBLESHOOTING

Important safety precautions and preliminary checks to perform before servicing the unit.

HOW TO REPLACE BATTERIES

Step-by-step guide for replacing remote controller batteries to ensure proper functionality.

HORIZONTAL VANE INSTALLATION

INSTRUCTION OF TROUBLESHOOTING

DIAGNOSTIC FLOWS AND INDICATORS

Flowcharts and explanations of indicator lamp behavior to diagnose unit malfunctions.

TROUBLESHOOTING CHECK TABLE

TROUBLE CRITERIA OF MAIN PARTS

TROUBLESHOOTING FLOWS

HORIZONTAL VANE DIAGNOSTIC CHECK

TEST POINT DIAGRAM AND VOLTAGE

DISASSEMBLY INSTRUCTIONS

TERMINAL DETACHING POINTS

Instructions on how to detach terminals with and without locking mechanisms.

REMOVING THE PANEL

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

REMOVING THE ELECTRONIC CONTROL P.C. BOARD

Procedures for safely removing the electronic control P.C. board and related components.

REMOVING THE ELECTRICAL BOX

REMOVING NOZZLE ASSEMBLY AND VANE MOTOR

REMOVING INDOOR FAN MOTOR AND LINE FLOW FAN

PARTS LIST

INDOOR UNIT STRUCTURAL PARTS

Lists structural components of the indoor unit with part numbers and quantities.

ACCESSORY AND REMOTE CONTROLLER

Lists accessories and remote controller parts with part numbers.

INDOOR UNIT ELECTRICAL AND FUNCTIONAL PARTS

ELECTRICAL COMPONENTS LIST

Detailed list of electrical parts and their specifications, including thermal fuses and varistors.

AIR CLEANING FILTER

FILTER SPECIFICATIONS AND MAINTENANCE

Details on the air cleaning filter's function, replacement, and maintenance.