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General| Brand | Mitsubishi Electric |
|---|---|
| Model | MXZ-2B20NA |
| Category | Air Conditioner |
| Language | English |
Service manual for Mitsubishi Electric outdoor split-type air conditioners.
Details technical modifications and revisions made to the models.
Identifies and describes the function of each part of the unit.
Provides detailed technical specifications for various outdoor unit models.
Presents noise level data for outdoor units across different frequencies.
Shows the physical dimensions and installation outlines for outdoor units.
Electrical wiring diagrams for different outdoor unit models.
Illustrates the refrigerant flow and components within the system.
Contains comprehensive technical data, including electrical and performance metrics.
Explains the relationship between system sensors and actuators.
Details important service functions like pre-heat control and auto line correction.
Provides guidance for diagnosing and resolving operational issues.
Step-by-step procedures for safely disassembling unit components.
Details the addition of the MXZ-5B42NA model.
Notes correction of the Failure Mode Recall Function.
Indicates corrections made to the Troubleshooting section.
Lists additions of specific models with '-1' suffix.
Notes the addition of the MXZ-3B30NA model.
Lists the addition of MXZ-3B24NA and MXZ-4B36NA models.
Notes the addition of the MXZ-2B20NA-1 model.
Identifies and describes parts for the MXZ-2B20NA.
Identifies and describes parts for multiple models.
Identifies and describes parts for the MXZ-5B42NA.
Technical specifications for MXZ-2B20NA and MXZ-2B20NA-1.
Technical specifications for MXZ-3B24NA and MXZ-3B24NA-1.
Technical specifications for MXZ-3B30NA and MXZ-3B30NA-1.
Technical specifications for MXZ-4B36NA and MXZ-4B36NA-1.
Technical specifications for MXZ-5B42NA.
Noise data curves for the MXZ-2B20NA outdoor unit.
Noise data curves for the MXZ-3B24NA outdoor unit.
Noise data curves for the MXZ-3B30NA outdoor unit.
Noise data curves for the MXZ-4B36NA outdoor unit.
Noise data curves for the MXZ-5B42NA outdoor unit.
Physical outlines and installation dimensions for MXZ-2B20NA.
Physical outlines and installation dimensions for MXZ-3B24NA/MXZ-3B30NA.
Physical outlines and installation dimensions for MXZ-4B36NA.
Physical outlines and installation dimensions for MXZ-5B42NA.
Electrical wiring diagram for MXZ-2B20NA models.
Electrical wiring diagram for MXZ-2B20NA-1 model.
Electrical wiring diagrams for MXZ-3B24NA/MXZ-3B30NA.
Electrical wiring diagram for MXZ-4B36NA.
Wiring diagrams for MXZ-3B24NA-1/MXZ-3B30NA-1 models.
Wiring diagram for MXZ-4B36NA-1 model.
Electrical wiring diagram for MXZ-5B42NA.
Refrigerant system diagram for MXZ-2B20NA.
Specifies the operating temperature range for MXZ-2B20NA.
Details maximum piping lengths and pipe sizing for MXZ-2B20NA.
Refrigerant system diagrams for MXZ-3B24NA/MXZ-3B30NA.
Specifies operating temperature ranges for MXZ-3B24NA/MXZ-3B30NA.
Piping limits and sizing for MXZ-3B24NA/MXZ-3B30NA.
Refrigerant system diagram for MXZ-4B36NA.
Specifies operating temperature ranges for MXZ-4B36NA.
Piping limits and sizing for MXZ-4B36NA.
Refrigerant system diagram for MXZ-5B42NA.
Specifies operating temperature ranges for MXZ-5B42NA.
Piping limits and sizing for MXZ-5B42NA.
Technical data for MXZ-2B20NA and MXZ-2B20NA-1.
Technical data for MXZ-3B24NA and MXZ-3B24NA-1.
Technical data for MXZ-4B36NA and MXZ-4B36NA-1.
Technical data for MXZ-3B30NA and MXZ-3B30NA-1.
Technical data for MXZ-5B42NA.
Details guaranteed voltage ranges for outdoor units.
Describes operational conditions for cooling and heating modes.
Graphical representation of capacity and input for MXZ-2B20NA.
Capacity and input curves for multiple models.
Capacity and input curves for MXZ-5B42NA.
Capacity and input correction curves based on inverter frequency.
Inverter frequency correction curves for multiple models.
Inverter frequency correction curves for MXZ-5B42NA.
Charts showing low pressure and current for MXZ-2B20NA.
Charts showing low pressure and current for MXZ-2B20NA (09-class).
Charts showing low pressure and current for MXZ-2B20NA (12-class).
Charts showing low pressure and current for MXZ-2B20NA (15-class).
Charts for low pressure and current for multiple models.
Charts for low pressure and current for specific models (09-class).
Charts for low pressure and current for specific models (12-class).
Charts for low pressure and current for specific models (15-class).
Charts for low pressure and current for specific models (18-class).
Charts for low pressure and current for MXZ-4B36NA (24-class).
Charts for low pressure and current for MXZ-5B42NA (06-class).
Charts for low pressure and current for MXZ-5B42NA (09-class).
Charts for low pressure and current for MXZ-5B42NA (12-class).
Charts for low pressure and current for MXZ-5B42NA (15-class).
Charts for low pressure and current for MXZ-5B42NA (18-class).
Charts for low pressure and current for MXZ-5B42NA (24-class).
Maps sensors to actuators for various unit models.
Details the pre-heat control function for compressor protection.
Explains the auto line correcting function for wiring/piping.
Critical safety precautions before starting troubleshooting.
Procedure for recalling memorized abnormal conditions.
Step-by-step flowchart for diagnosing outdoor unit failures.
Lists common outdoor unit failures, conditions, and remedies.
Failure mode table specific to MXZ-5B models.
General instructions and guidance for effective troubleshooting.
Table for troubleshooting check codes for MXZ-2B/3B/4B models.
Table for troubleshooting check codes for MXZ-5B models.
Criteria for testing main components like thermistors and motors.
Diagnostic flowcharts for outdoor unit operation issues.
Diagnostic flowchart for MXZ-5B42NA operation.
Interpreting LED indicators for communication status.
LED patterns for MXZ-2B20NA communication status.
LED patterns for MXZ-3B24NA/MXZ-3B30NA/MXZ-4B36NA communication.
LED patterns for MXZ-5B42NA communication status.
Troubleshooting heating operation issues related to R.V. coil.
Troubleshooting cooling operation issues related to R.V. coil.
Troubleshooting LEV for indoor unit frosting issues.
Troubleshooting LEV for warm indoor unit during heating.
Procedure to check the compressor for heating performance issues.
Procedure to check the compressor for cooling performance issues.
Steps to check thermistors for normal resistance.
Troubleshooting steps for outdoor fan motor malfunctions.
Specific checks for the outdoor fan motor on MXZ-5B42NA.
Troubleshooting HPS when operation frequency is low.
Steps to check bus-bar voltage and related LED indications.
Diagram of test points and voltages on the MXZ-2B20NA PC board.
Diagram of test points and voltages on PC boards for multiple models.
Diagram of test points and voltages on the MXZ-5B42NA outdoor control PC board.
Diagram of the noise filter PC board for MXZ-2B20NA.
Diagrams of noise filter PC boards for multiple models.
Diagram of the power board for MXZ-2B20NA.
Diagrams of power boards for multiple models.
Diagram of the outdoor power PC board for MXZ-5B42NA.
Details on detaching terminals with locking mechanisms.
Step-by-step instructions for compressor removal.
Disassembly procedures specific to the MXZ-2B20NA model.
Instructions for removing the electronic control PC board.
Procedures for removing the fan motor assembly.
Steps for removing the 4-way valve.
Steps for removing the expansion valve.
Steps for removing the reactor.
Detailed steps for compressor removal.
Disassembly procedures for MXZ-3B24NA/MXZ-3B30NA/MXZ-4B36NA.
Instructions for removing the fan motor.
Instructions for removing the 4-way valve.
Instructions for removing the expansion valve.
Instructions for removing the reactor.
Procedures for removing the outer panels of the unit.
Disassembly procedures specific to the MXZ-5B42NA model.
Steps to remove electronic boards and reactor.
Instructions for removing the fan motor.
Procedures for removing the compressor and 4-way valve.
Procedures for removing the expansion valve.
