Related Manuals for Mitsubishi Electric PURY-P400YHM-A
Summarization of Contents
I Read Before Servicing
Read Before Servicing
Essential preliminary information before performing any servicing tasks.
Necessary Tools and Materials
Lists all required tools and materials for installation and servicing.
Piping Materials
Details acceptable copper pipe materials and specifications for R410A systems.
Storage of Piping
Guidelines for proper storage of refrigerant piping to prevent contamination.
Pipe Processing
Instructions on processing pipes, including using specific oils for flares and flanges.
Brazing
Procedures and precautions for brazing refrigerant pipes to ensure system integrity.
Air Tightness Test
Method for conducting an air tightness test using nitrogen to detect leaks.
Vacuum Drying (Evacuation)
Steps for vacuum drying the refrigerant circuit to remove moisture.
Refrigerant Charging
Proper procedures for charging refrigerant, emphasizing liquid phase charging for R410A.
Remedies to be taken in case of a Refrigerant Leak
Procedures for replenishing refrigerant after a leak occurs.
Characteristics of the Conventional and the New Refrigerants
Comparison of chemical and pressure characteristics of R410A and older refrigerants.
Notes on Refrigerating Machine Oil
Information on the specific refrigerating machine oil for HFC systems and effects of contaminants.
II Restrictions
System configuration
Details compatible indoor units for various outdoor unit capacities and configurations.
Types and Maximum allowable Length of Cables
Specifications for transmission and remote controller wiring types and maximum lengths.
Switch Settings and Address Settings
Guidance on setting dipswitches and addresses for various units and controllers.
Sample System Connection
Illustrative examples of typical system connections for MA and M-NET controllers.
An Example of a System to which an MA Remote Controller is connected
Detailed wiring and connection examples for systems using MA remote controllers.
An Example of a System to which an M-NET Remote Controller is connected
Detailed wiring and connection examples for systems using M-NET remote controllers.
An Example of a System to which both MA Remote Controller and M-NET Remote Controller are connected
Wiring examples for systems incorporating both MA and M-NET remote controllers.
Restrictions on Pipe Length
Specifies allowable lengths for refrigerant piping based on system configuration and unit models.
III Outdoor Unit Components
Outdoor Unit Components and Refrigerant Circuit
Identifies key components of the outdoor unit and illustrates the refrigerant circuit.
Control Box of the Outdoor Unit
Details the layout and components within the outdoor unit's control box.
Outdoor Unit Circuit Board
Provides a diagram and explanation of the outdoor unit's main circuit board.
BC Controller Components
Identifies components of the BC controller for different models (G, GA, HA).
Control Box of the BC Controller
Shows the internal layout of the BC controller's control box.
BC Controller Circuit Board
Illustrates the BC controller circuit board and its components.
IV Remote Controller
Functions and Specifications of MA and ME Remote Controllers
Compares functions and specifications of MA and M-NET (ME) remote controllers.
Group Settings and Interlock Settings via the ME Remote Controller
Guides on setting up group operations and interlocks with LOSSNAY units using ME controller.
Interlock Settings via the MA Remote Controller
Instructions for setting up interlock operations with LOSSNAY units using the MA remote controller.
Using the built-in Temperature Sensor on the Remote Controller
Explains how to use the remote controller's built-in temperature sensor for operation.
V Electrical Wiring Diagram
Electrical Wiring Diagram of the Outdoor Unit
Detailed wiring diagrams for the outdoor unit, illustrating connections for all components.
Electrical Wiring Diagram of the BC Controller
Comprehensive wiring diagrams for various BC controller models.
Electrical Wiring Diagram of Transmission Booster
Wiring diagram specific to the transmission booster unit.
VI Refrigerant Circuit
Refrigerant Circuit Diagram
Schematic diagrams illustrating the refrigerant flow for different outdoor unit models.
Principal Parts and Functions
Describes the function and specifications of major refrigerant circuit components.
VII Control
Functions and Factory Settings of the Dipswitches
Details functions and factory settings for various DIP switches on control boards.
Controlling the Outdoor Unit
Explains the control methods for outdoor units, including startup sequences and modes.
Controlling BC Controller
Describes how to control the BC controller's solenoid valves and LEV based on operation modes.
Operation Flow Chart
Visual flowcharts illustrating indoor, outdoor, and BC controller operation modes.
VIII Test Run Mode
Items to be checked before a Test Run
A checklist of essential items to verify before initiating a test run.
Test Run Method
Step-by-step instructions for performing a test run using the remote controller.
Operating Characteristic and Refrigerant Amount
Explains how refrigerant amount affects system operation and provides diagnostic indicators.
Adjusting the Refrigerant Amount
Guides on diagnosing and adjusting refrigerant levels based on observed symptoms.
Refrigerant Amount Adjust Mode
Detailed procedure for adjusting refrigerant amount using the unit's modes and diagnostic switches.
The following symptoms are normal.
Lists common operational symptoms that are considered normal and do not indicate a fault.
Standard Operation Data (Reference Data)
Provides reference data for standard operating conditions for various models.
IX Troubleshooting
Error Code Lists
Comprehensive list of error codes, their definitions, and relevant units.
Responding to Error Display on the Remote Controller
Procedures for interpreting and responding to error codes displayed on the remote controller.
Investigation of Transmission Wave Shape/Noise
Methods for diagnosing transmission line issues, including wave shape and noise analysis.
Troubleshooting Principal Parts
Detailed troubleshooting steps for major system components like sensors and valves.
Refrigerant Leak
Procedures for locating and repairing refrigerant leaks in both cooling and heating seasons.
Compressor Replacement Instructions
Step-by-step instructions for safely replacing the compressor unit.
Servicing the BC controller
Guidance on servicing the BC controller, including panel removal and component checks.
Troubleshooting Using the Outdoor Unit LED Error Display
How to interpret LED error codes displayed on the outdoor unit's control board for diagnostics.
X LED Monitor Display on the Outdoor Unit Board
How to Read the LED on the Service Monitor
Explains how to interpret the service monitor's LED displays for various operating conditions and errors.
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