Mitsubishi Electric MXZ-4A71VA - E2 User Manual

SERVICE MANUAL
CONTENTS
1. TECHNICAL CHANGES ··································· 2
2. PART NAMES AND FUNCTIONS ····················· 8
3. INDOOR/OUTDOOR
CORRESPONDENCE TABLE ························ 10
4. INDOOR UNITS COMBINATION ···················· 14
5. SPECIFICATION ·············································· 61
6. NOISE CRITERIA CURVES ···························· 66
7. OUTLINES AND DIMENSIONS ······················ 68
8. WIRING DIAGRAM ·········································· 75
9. REFRIGERANT SYSTEM DIAGRAM ············· 87
10. PERFORMANCE CURVES ····························· 97
11. ACTUATOR CONTROL ··································115
12. SERVICE FUNCTIONS ···································116
13. TROUBLESHOOTING ··································· 120
14. DISASSEMBLY INSTRUCTIONS ·················· 145
15. PARTS LIST ··················································· 160
16. RoHS PARTS LIST ········································ 172
17. OPTIONAL PARTS ······················ BACK COVER
Models
MXZ-2A30VA -
E1
MXZ-4A71VA -
E2
MXZ-2A30VA -
E2
MXZ-4A71VA -
E3
MXZ-2A40VA -
E1
MXZ-4A71VA -
E4
MXZ-2A40VA -
E2
MXZ-4A71VA -
E5
MXZ-2A52VA -
E1
MXZ-4A71VA -
E6
MXZ-2A52VA -
E2
MXZ-4A71VA -
E7
MXZ-3A54VA -
E1
MXZ-4A80VA -
E1
MXZ-3A54VA -
E2
MXZ-4A80VA -
E2
MXZ-3A54VA -
E3
MXZ-5A100VA -
E1
MXZ-3A54VA -
E4
MXZ-3A54VA -
E5
MXZ-3A54VA -
E6
MXZ-3A54VA -
E7
MXZ-4A71VA -
E1
No. OB377
REVISED EDITION-H
HFC
utilized
R410A
SPLIT-TYPE AIR CONDITIONERS
MXZ-4A80VA-
E1
Please void OB377 REVISED EDITION-G.
OUTDOOR UNIT
Revision H:
• Indoor units combinations for 42 class
have been added.
•
MXZ-3A54VA-
E7
and MXZ-4A71VA-
E7
have been added.
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 service manual
MSZ-FA•VA Series (OB371)
MSZ-GA•VA Series (OB378, OB388)
MSZ-CB•VA Series (OB441)
MSZ-GC•VA Series (OBH468)
MSZ-GE•VA Series (OBH515)
MSZ-FD•VA Series (OBH488)

Mitsubishi Electric MXZ-4A71VA - E2 Specifications

General

Brand	Mitsubishi Electric
Model	MXZ-4A71VA - E2
Category	Air Conditioner
Language	English

Summary

Outdoor Unit Service Manual Overview

Model Identification and Revisions

Lists covered models and details manual revision history.

Technical Changes Summary

Revision A to H Details

Details changes implemented across revisions A through H of the manual.

R410A Refrigerant Information

Refrigerant Properties and Tools

Compares R410A properties with R22 and details refrigeration oil specifications.

Refrigerant Piping and Oil Procedures

Piping, Oil, Air Purge, and Charging

Details refrigerant piping specs, oil application, air purge, and refrigerant charging procedures.

Part Names and Functions

MXZ-2A Series Unit Components

Diagram showing parts of MXZ-2A30VA, MXZ-2A40VA, MXZ-2A52VA outdoor units.

Outdoor Unit Accessories and Diagrams

Accessories and MXZ-4A/5A Diagrams

Lists accessories and provides diagrams for MXZ-4A80VA and MXZ-5A100VA outdoor units.

Indoor/Outdoor Unit Compatibility Tables

MXZ-2A Series Unit Combinations

Lists valid indoor unit combinations for MXZ-2A30VA, MXZ-2A40VA, MXZ-2A52VA models.

Indoor Unit Combination Specifications

MXZ-2A, 3A, 4A, 5A Combination Specs

Tables showing capacity and electrical data for MXZ-2A, 3A, 4A, 5A unit combinations.

Outdoor Unit Specifications

MXZ-2A30VA Specifications

Detailed specifications for the MXZ-2A30VA outdoor unit, including electrical data and test conditions.

Noise Criteria Curves

Noise Curves for MXZ Series Models

Octave band sound pressure level curves for MXZ-2A, 3A, 4A, 5A series outdoor units.

Outlines and Dimensions

MXZ-2A Series Dimensions and Space

Diagrams and dimensions for MXZ-2A30VA, MXZ-2A40VA, MXZ-2A52VA units, including required space.

Wiring Diagrams and Components

MXZ-2A Series Wiring Diagram

Wiring diagram for MXZ-2A series outdoor units with component list.

Refrigerant System and Piping Specifications

MXZ-2A Series Refrigerant System

Diagram and piping length for MXZ-2A30VA, including additional refrigerant charge.

Performance Curves and Temperature Measurement

Performance Test Conditions and Measurement

Specifies performance test conditions and guides measuring temperature differences for curves.

Capacity and Input Correction Curves

MXZ-2A, 3A/4A, 4A80VA, 5A100VA Correction Curves

Graphs showing capacity/input correction by frequency for MXZ-2A, 3A, 4A, 4A80VA, 5A100VA models.

Service Functions Overview

Operation Mode Locking and Noise Reduction

Functions to lock operation mode and lower outdoor unit noise levels.

Troubleshooting Procedures and Fault Diagnosis

Troubleshooting Cautions and Failure Modes

Safety precautions, failure mode recall, and general troubleshooting steps.

Test Point Diagrams and Voltage Checks

Inverter P.C. Board Test Points

Diagram of the inverter P.C. board showing test points, voltages, and thermistor resistance curves.

Disassembly Instructions

MXZ-2A Series Disassembly Procedures

Steps for removing cabinet, panels, and major components for MXZ-2A models.

Parts List - Structural and Functional (Non-RoHS)

MXZ-2A Series Parts List

List of structural, functional, electrical parts, and accessories for MXZ-2A30VA, MXZ-2A40VA, MXZ-2A52VA units.

Parts List - Structural and Functional (RoHS)

MXZ-2A Series Structural Parts (RoHS)

RoHS compliant list of structural and functional parts for MXZ-2A30VA, MXZ-2A40VA, MXZ-2A52VA units.

Optional Parts

Different-Diameter Pipes and Outlet Guide

Specifications for different-diameter pipes and diagram for the outlet guide.