Table of Contents
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SPLIT-TYPE, HEAT PUMP AIR CONDITIONERS
OUTDOOR UNIT
SERVICE MANUAL
Inverter-controlled multi system type
Models
MXZ-2A40VA -
MXZ-2A52VA -
MXZ-3A54VA -
MXZ-4A71VA -
NOTE:
•This service manual describes technical data of outdoor units.
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CONTENTS
10. PERFORMANCE CURVES ······························39
11. ACTUATOR CONTROL ····································50
12. SERVICE FUNCTIONS·····································50
13. TROUBLESHOOTING······································53
MXZ-4A80VA
14. DISASSEMBLY INSTRUCTIONS·····················77
15. PARTS LIST······················································86
16. OPTIONAL PARTS ······················BACK COVER
• MXZ-3A54/4A71VA
• MXZ-2A40/2A52VA
Please void OB377
HFC
utilized
R410A
Indoor unit service manual
MSZ-FA•VA Series (OB371)
MSZ-GA•VA Series
(OB378,OB388)
MSZ-CB•VA Series (OB441)
1. TECHNICAL CHANGES ····································2
2. PART NAMES AND FUNCTIONS······················7
3. INDOOR/OUTDOOR
CORRESPONDENCE TABLE ···························8
4. INDOOR UNITS COMBINATION ·····················10
5. SPECIFICATION···············································24
6. NOISE CRITERIA CURVES ·····························27
7. OUTLINES AND DIMENSIONS ·······················28
8. WIRING DIAGRAM ··········································31
9. REFRIGERANT SYSTEM DIAGRAM ··············35
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has been added.
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has been added.
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No. OB377
REVISED EDITION-A
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Table of Contents
Troubleshooting
Related Manuals for Mitsubishi Electric MXZ-4A71V
Summarization of Contents
PART NAMES AND FUNCTIONS
ACCESSORIES
Lists accessories provided with outdoor units.
INDOOR UNITS COMBINATION
MXZ-2A40VA
Details indoor unit combinations and electrical data for MXZ-2A40VA.
MXZ-2A52VA
Details indoor unit combinations and electrical data for MXZ-2A52VA.
MXZ-3A54VA
Details indoor unit combinations and electrical data for MXZ-3A54VA.
MXZ-4A71VA
Details indoor unit combinations and electrical data for MXZ-4A71VA.
MXZ-4A80VA
Details indoor unit combinations and electrical data for MXZ-4A80VA.
SPECIFICATION
MXZ-2A40VA
Provides specifications for the MXZ-2A40VA outdoor unit.
MXZ-2A52VA
Provides specifications for the MXZ-2A52VA outdoor unit.
MXZ-3A54VA
Provides specifications for the MXZ-3A54VA outdoor unit.
MXZ-4A71VA
Provides specifications for the MXZ-4A71VA outdoor unit.
MXZ-4A80VA
Provides specifications for the MXZ-4A80VA outdoor unit.
NOISE CRITERIA CURVES
MXZ-2A40VA
Noise criteria curves for MXZ-2A40VA outdoor unit.
MXZ-2A52VA
Noise criteria curves for MXZ-2A52VA outdoor unit.
MXZ-3A54VA
Noise criteria curves for MXZ-3A54VA outdoor unit.
MXZ-4A71VA
Noise criteria curves for MXZ-4A71VA outdoor unit.
OUTLINES AND DIMENSIONS
MXZ-2A40VA / MXZ-2A52VA
Dimensions and installation space for MXZ-2A40VA/2A52VA outdoor units.
MXZ-3A54VA
Dimensions and installation space for MXZ-3A54VA outdoor unit.
MXZ-4A71VA
Dimensions and installation space for MXZ-4A71VA outdoor unit.
MXZ-4A80VA
Dimensions and installation space for MXZ-4A80VA outdoor unit.
WIRING DIAGRAM
MXZ-2A40VA / MXZ-2A52VA
Wiring diagram for MXZ-2A40VA/2A52VA outdoor units.
MXZ-3A54VA
Wiring diagram for MXZ-3A54VA outdoor unit.
MXZ-4A71VA
Wiring diagram for MXZ-4A71VA outdoor unit.
MXZ-4A80VA
Wiring diagram for MXZ-4A80VA outdoor unit.
REFRIGERANT SYSTEM DIAGRAM
MXZ-2A40VA / MXZ-2A52VA
Refrigerant system diagram and piping for MXZ-2A40VA/2A52VA.
MXZ-3A54VA
Refrigerant system diagram and piping for MXZ-3A54VA.
MXZ-4A71VA
Refrigerant system diagram and piping for MXZ-4A71VA.
MXZ-4A80VA
Refrigerant system diagram and piping for MXZ-4A80VA.
PERFORMANCE CURVES
Capacity and Input Curves
Performance curves for cooling and heating capacity and input.
Inverter Output Frequency Correction
Curves showing capacity and input correction by inverter frequency.
Outdoor Pressure and Current Curves
Curves for outdoor low pressure and unit current vs. ambient conditions.
SERVICE FUNCTIONS
Locking the operation mode
Function to lock the outdoor unit operation mode to COOL/DRY or HEAT.
Lowering the operating noise
Function to reduce outdoor unit operating noise, potentially lowering capacity.
AUTO LINE CORRECTING function
Auto function to detect and correct incorrect wiring or piping.
TROUBLESHOOTING
Cautions on troubleshooting
Important precautions and procedures to follow before and during troubleshooting.
Failure mode recall function
How to recall memorized abnormal conditions for diagnosis.
Instruction of troubleshooting
Flowchart for troubleshooting unit operation issues.
Troubleshooting check table
Table listing symptoms, LED indications, conditions, and correspondences.
Trouble criterion of main parts
Resistance and voltage criteria for checking major components.
Troubleshooting flow
Step-by-step flowcharts for diagnosing specific operational problems.
DISASSEMBLY INSTRUCTIONS
MXZ-2A40VA / MXZ-2A52VA OUTDOOR UNIT
Procedures for removing the cabinet and other components for MXZ-2A40VA/2A52VA.
MXZ-3A54VA / MXZ-4A71VA OUTDOOR UNIT
Procedures for removing the compressor and fan motor for MXZ-3A54VA/4A71VA.
MXZ-4A80VA OUTDOOR UNIT
Procedures for removing the compressor and fan motor for MXZ-4A80VA.
PARTS LIST
OUTDOOR UNIT STRUCTURAL PARTS AND FUNCTIONAL PARTS
Lists structural and functional parts of the outdoor unit with diagrams.
OUTDOOR UNIT ELECTRICAL PARTS
Lists electrical components of the outdoor unit.
DRAIN SOCKET
Lists the drain socket part.
OUTDOOR UNIT STRUCTURAL PARTS AND FUNCTIONAL PARTS
Lists structural and functional parts for MXZ-3A54VA/4A71VA.
OUTDOOR UNIT FUNCTIONAL PARTS AND ELECTRICAL PARTS
Lists functional and electrical parts for MXZ-3A54VA/4A71VA.
OUTDOOR UNIT STRUCTURAL PARTS AND FUNCTIONAL PARTS
Lists structural and functional parts for MXZ-4A80VA.
OUTDOOR UNIT FUNCTIONAL PARTS AND ELECTRICAL PARTS
Lists functional and electrical parts for MXZ-4A80VA.
OPTIONAL PARTS
Different-diameter pipe
Details pipes for connecting units with different diameter requirements.
Outlet guide
Optional part for changing air discharge direction.
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