Mitsubishi Electric PURY-P450 Service Handbook
Mitsubishi Electric PURY-P450 Service Handbook

Mitsubishi Electric PURY-P450 Service Handbook

City multi r410a
Table of Contents

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AIR CONDITIONERS CITY MULTI
PURY-P200, P250, P300, P350, P400YGM-A
Models
PURY-P450, P500, P550, P600, P650YGM-A
Service Handbook

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Summarization of Contents

Read Before Servicing
Items to Be Checked
Lists essential checks before starting any servicing task.
Necessary Tools and Materials
Details the specific tools and materials required for unit installation and servicing.
Piping Materials
Specifies the types of copper pipes and their radial thickness requirements for R410A.
Storage of Piping Material
Provides guidelines on storing piping materials indoors and sealing ends to prevent contamination.
Piping Machining
Explains the use of specific oils for coating flares and flange connections during pipe machining.
Brazing
Outlines strict procedures for brazing to prevent foreign matter entry into the refrigerant circuit.
Airtightness Test
Describes the methods for conducting an airtightness test and reasons for specific procedures.
Vacuuming
Details the use of vacuum pumps and gauges for proper system evacuation.
Vacuum Drying
Explains the process and precautions for vacuum drying the refrigerant circuit.
Changing Refrigerant
Covers the correct method and precautions for charging refrigerant R410A into the system.
Remedies to be taken in case of a refrigerant leak
Provides guidance on how to handle a refrigerant leak and recharge the system.
Characteristics of the Conventional and the New Refrigerants
Compares chemical properties, safety, and pressure characteristics of R410A and R22.
Notes on Refrigerating Machine Oil
Discusses the specific refrigerating machine oil for HFC systems and effects of contaminants.
Restrictions
Electrical Work & M-NET control
Provides attention points and types of control cables for electrical work and M-NET communication.
Types of Switch Setting and Address Setting
Details switch settings and address assignment methods for various indoor and outdoor units.
Examples of system connection
Illustrates various system connection methods, including MA remote controllers and Lossnay units.
Restrictions on Refrigerant Piping Length
Specifies restrictions and allowable values for refrigerant piping length, height differences, and branch piping.
Components of the Outdoor Unit
Appearance of the Components and Refrigerant Circuit
Shows front and rear views of outdoor units and identifies key components in the refrigerant circuit.
Control Box
Details the appearance and internal components of the control box for P200-P400 and P450-P650 type units.
Circuit Board
Provides images and labels for the Main board and INV board, showing connectors and components.
BC controller (inside the panel)
Shows front and rear views of the BC controller panel, identifying key components like sensors and valves.
BC control box
Displays the BC controller control box and BC controller board, highlighting transformers and switches.
BC controller board
Shows the BC controller board with labeled switches and connectors for configuration.
Remote Controller
Functions and Specifications of MA and ME Remote Controllers
Compares functions, specifications, and installation locations of MA and M-NET remote controllers.
Group Setting and Interlocking Settings that are Made on an ME Remote Controller
Guides on performing group registration and interlock settings using the ME remote controller.
Interlocking Setting that is Made on the MA Remote Controller
Details the procedure for Lossnay interlocking setting using the MA remote controller.
Switching to the built-in Thermo on the remote controller
Explains how to switch to the built-in thermostat mode on the remote controller using DIP switch settings.
Electrical Wiring Diagram
PURY-P200, P250, P300, P350, P400YGM-A
Provides the electrical wiring diagram for PURY-P200 to P400 models.
PURY-P450, P500, P550, P600, P650YGM-A
Provides the electrical wiring diagram for PURY-P450 to P650 models.
CMB-P104V-G
Shows the electrical wiring diagram for the CMB-P104V-G unit.
CMB-P105, 106V-G
Details the electrical wiring diagram for the CMB-P105 and 106V-G units.
CMB-P108, 1010V-G
Presents the electrical wiring diagram for the CMB-P108 and 1010V-G units.
CMB-P1013, 1016V-G
Provides the electrical wiring diagram for the CMB-P1013 and 1016V-G units.
CMB-P104V-GB
Shows the electrical wiring diagram for the CMB-P104V-GB unit.
CMB-P108V-GB
Details the electrical wiring diagram for the CMB-P108V-GB unit.
CMB-P108, 1010V-GA
Presents the electrical wiring diagram for the CMB-P108 and 1010V-GA units.
CMB-P1013, 1016V-GA
Provides the electrical wiring diagram for the CMB-P1013 and 1016V-GA units.
Refrigerant Circuit
Refrigerant Circuit Diagram
Displays the refrigerant circuit diagram for PURY-P200 to P400 models.
Functions of Principal Parts
Explains the functions of principal parts within the outdoor unit, including compressors and sensors.
BC controller
Details the functions and specifications of BC controller parts, categorized by G, GA, and GB types.
Control
Dip Switch Functions and Their Factory Settings
Lists DIP switch functions and their factory default settings for outdoor unit main board and INV board.
Controlling the Outdoor Unit
Explains initial control, start-up control, bypass control, and frequency control for outdoor units.
Operation Flow Chart
Provides flow charts for determining indoor and outdoor unit operation modes and BC controller control.
Test Run
Check Items before Test Run
Lists essential checks to perform before executing a test run on the unit.
Test Run Method
Details the procedure for performing a test run using the remote controller, including button operations.
Operating Characteristics and Refrigerant Amount
Explains the relationship between refrigerant amount and operating characteristics like discharge temperature.
Adjustment and Judgment of Refrigerant Amount
Guides on diagnosing and adjusting refrigerant levels based on symptoms and operating conditions.
Refrigerant Volume Adjustment Mode Operation
Describes how to enter and use the refrigerant volume adjustment mode for proper charging.
Symptoms that do not Signify Problems
Lists common symptoms that may appear normal but do not indicate a problem with the unit.
Standard Operation Data (Reference Data)
Provides standard operation data for cooling and heating modes across various unit models.
Troubleshooting
Check Code List
Lists error codes, their meanings, and detection methods for various system abnormalities.
Responding to Error Display on the Remote Controller
Provides detailed mechanical problems, causes, and checking methods for troubleshooting error displays.
Investigation of Transmission Wave Shape/Noise
Explains how to investigate transmission wave shapes and noise issues affecting M-NET communication.
Troubleshooting of Principal Parts
Offers troubleshooting methods for key components like pressure sensors, LEV, solenoid valves, and fans.
Refrigerant Leak
Details procedures for identifying and repairing refrigerant leaks in extended piping and outdoor units.
Compressor Replacement Instructions (only P450-P650 types)
Provides step-by-step instructions for replacing compressors in P450-P650 types, including safety precautions.
Collecting the Cooling Liquid from the Accumulator (Only P450-P650 types)
Describes the process for safely collecting cooling liquid from the accumulator for P450-P650 types.
BC controller service instruction
Guides on servicing BC controllers, including control box inspection and thermistor replacement.
LED display
LED Monitor Display
Explains how to read LED indicators on the control circuit board for monitoring operating conditions.

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