Mitsubishi Electric MXZ-2A40VA 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-2A40VA Specifications

General

Brand	Mitsubishi Electric
Model	MXZ-2A40VA
Category	Air Conditioner
Language	English

Summary

TECHNICAL CHANGES

Revision Summaries and Model Updates

R410A REFRIGERANT INFORMATION

R410A Refrigerant Characteristics, Tools, and Piping

Covers R410A properties, dedicated tools, and piping guidelines.

Refrigeration Oil, Air Purge, and Charge Procedures

SPECIFICATION DETAILS

Outdoor Unit Specifications

Details for outdoor unit models including capacity, electrical data, and components.

OUTLINES AND DIMENSIONS

MXZ-2A Series Dimensions and Space

Physical dimensions and installation space requirements for MXZ-2A models.

MXZ-3A54VA Dimensions and Space

MXZ-3A54VA Installation and Service Space

Detailed installation and service space for MXZ-3A54VA.

MXZ-4A71VA Dimensions and Space

MXZ-4A71VA Installation and Service Space

Detailed installation and service space for MXZ-4A71VA.

MXZ-4A80VA Dimensions and Space

MXZ-4A80VA Installation and Service Space

Detailed installation and service space for MXZ-4A80VA.

MXZ-4A80VA/MXZ-5A100VA Dimensions and Space

WIRING DIAGRAMS

MXZ-2A Series Wiring Diagrams

MXZ-3A54VA Wiring Diagrams

MXZ-4A71VA Wiring Diagrams

MXZ-4A80VA Wiring Diagrams

MXZ-5A100VA Wiring Diagrams

REFRIGERANT SYSTEM DIAGRAMS AND PIPING

MXZ-2A Series Details

MXZ-3A54VA Details

MXZ-4A71VA Details

MXZ-4A80VA Details

MXZ-5A100VA Details

PERFORMANCE CURVES AND OPERATION

General Performance Conditions

Model Capacity and Input Correction Curves

Performance curves for various models showing capacity/input vs. frequency.

Test Run Operation Procedure

Steps for operating fixed-frequency test run mode.

Outdoor Low Pressure and Current Curves

Curves showing low pressure and current based on ambient conditions.

ACTUATOR CONTROL FUNCTIONS

Sensor and Actuator Relationships

Table showing sensor purposes and actuator controls.

SERVICE FUNCTIONS AND SETTINGS

Locking Operation Mode

Lowering Outdoor Unit Operating Noise

Auto Line Correcting Function

Automatic detection and correction of wiring/piping errors.

Compressor Frequency and Fan Speed Adjustment

Defrost Finish Temperature and Heat Operation Time Adjustment

Ampere Limit Adjustment

TROUBLESHOOTING

Troubleshooting Cautions and General Procedure

Safety precautions and basic troubleshooting steps.

Failure Mode Recall Function

Method to recall and analyze past failure modes.

Troubleshooting Check Tables and Criteria

Detailed symptom, condition, and correspondence for fault diagnosis.

Troubleshooting Flowcharts

Step-by-step diagnostic flows for common issues.

Test Point Diagrams and Voltages

Diagrams showing test points and voltage/resistance values for diagnosis.

PARTS LISTS

Non-RoHS Compliant Parts

Lists structural, functional, electrical parts, and accessories for MXZ-2A, 3A/4A, 4A80VA models.

RoHS Compliant Parts

Lists structural, functional, electrical parts, and accessories for MXZ-2A, 3A/4A, 4A80VA, 5A100VA models.