Mitsubishi MSZ-GA71VA User Manual

SERVICE MANUAL
CONTENTS
1. TECHNICAL CHANGES ····································2
2. PART NAMES AND FUNCTIONS······················3
3. SPECIFICATION·················································5
4. NOISE CRITERIA CURVES·······························6
5. OUTLINES AND DIMENSIONS ·························7
6. WIRING DIAGRAM ············································8
7. REFRIGERANT SYSTEM DIAGRAM················9
8. SERVICE FUNCTIONS ····································10
9. TROUBLESHOOTING······································12
10. DISASSEMBLY INSTRUCTIONS·····················24
11. PARTS LIST······················································27
12. RoHS PARTS LIST···········································28
13. OPTIONAL PARTS···········································30
Wireless type
Models
MSZ-GA50VA -
MSZ-GA60VA -
MSZ-GA71VA -
E1
E1
E1
SPLIT-TYPE, HEAT PUMP AIR CONDITIONERS
NOTE:
RoHS compliant products have <G> mark on the spec name plate.
For servicing of RoHS compliant products, refer to the RoHS Parts List.
INDOOR UNIT
No. OB388
REVISED EDITION-C
Please void OB388 REVISED EDITION-B
Revision:C
• PARTS LIST and RoHS PARTS LIST have been
changed.
Outdoor unit service manual
MUZ-GA•VA Series (OB389)
MXZ-A•VA Series (OB377)
OB388C.qxp 06.12.25 11:04 AM Page 1

Mitsubishi MSZ-GA71VA Specifications

General

Cooling Capacity	7.1 kW
Heating Capacity	8.0 kW
Power Supply	220-240 V, 50 Hz
Refrigerant	R410A
Indoor Unit Dimensions (W x H x D)	1100 x 325 x 235 mm
Outdoor Unit Dimensions (W x H x D)	840 x 880 x 330 mm

Summary

Technical Changes

Part Names and Functions

Accessories

Lists accessories provided with the unit.

Specification

Noise Criteria Curves

Outlines and Dimensions

Wiring Diagram

Refrigerant System Diagram

Service Functions

Timer Short Mode

Shortens timer setting for service.

P.C. Board Modification for Individual Operation

Modifies PC boards for individual unit operation.

Auto Restart Function

Unit restarts automatically after power failure.

Troubleshooting

Cautions on Troubleshooting

Safety precautions and checks before troubleshooting.

Failure Mode Recall Function

Recalls memorized failure details for diagnosis.

Instruction of Troubleshooting

Flowchart for diagnosing issues.

Troubleshooting Check Table

Table of abnormalities, symptoms, and causes.

Trouble Criterion of Main Parts

Checks and criteria for main components.

Troubleshooting Flow

Step-by-step guidance for specific troubleshooting.

Test Point Diagram and Voltage

Diagrams and voltage readings for electrical tests.

Electromagnetic Noise Interference

Disassembly Instructions

Removing the Front Panel

Procedure for front panel removal.

Removing Circuit Boards

Steps for circuit board removal.

Removing the Electrical Box

Procedure for electrical box removal.

Removing the Vane Motor

Procedure for vane motor removal.

Removing Fan and Motor

Steps for fan and motor removal.

Parts List (Non-RoHS Compliant)

Indoor Unit Structural Parts

List of indoor unit structural parts.

Indoor Unit Heat Exchanger

List of heat exchanger parts.

Indoor Unit Functional Parts and Electrical Parts

List of functional and electrical parts.

Accessory and Remote Controller

List of accessories and remote controllers.

RoHS Parts List

RoHS Indoor Unit Structural Parts

List of RoHS compliant structural parts.

RoHS Indoor Unit Heat Exchanger

List of RoHS compliant heat exchanger parts.

RoHS Functional and Electrical Parts

List of RoHS compliant functional/electrical parts.

RoHS Accessory and Remote Controller

List of RoHS compliant accessories/remote controllers.

Optional Parts

Air Cleaning Filter

Details and part number for air cleaning filter.