Mitsubishi Electric PURY-EP300YLM-A User Manual

AIR CONDITIONER
2015
Service Handbook
PURY-P200, P250, P300, P350, P400, P450, P500YLM-A(1)
PURY-P400, P450, P500, P550, P600, P650, P700, P750, P800, P850, P900YSLM-A(1)
PURY-EP200, EP250, EP300, EP350, EP400, EP450, EP500YLM-A
PURY-EP500, EP550, EP600, EP650, EP700, EP750, EP800, EP850, EP900YSLM-A
Model

Mitsubishi Electric PURY-EP300YLM-A Specifications

General

Brand	Mitsubishi Electric
Model	PURY-EP300YLM-A
Category	Air Conditioner
Language	English

Summary

Chapter 1 Check Before Servicing

1-2 Handling and Characteristics of Piping Materials, Refrigerant, and Refrigerant Oil

1-3 Working with Refrigerant Piping

Procedures and critical steps for working with refrigerant piping systems.

Chapter 2 Restrictions

2-10 Restrictions on Refrigerant Pipes

Chapter 3 Major Components, Their Functions and Refrigerant Circuits

3-1 External Appearance and Refrigerant Circuit Components of Outdoor Unit

Detailed view of outdoor unit components and their refrigerant circuit layout.

3-2 Outdoor Unit Refrigerant Circuit Diagrams

Schematic diagrams illustrating the refrigerant circuits for various outdoor unit models.

3-3 Functions of the Major Components of Outdoor Unit

3-5 External Appearance and Refrigerant Circuit Components of BC Controller

3-6 BC Controller Refrigerant Circuit Diagrams

Chapter 4 Electrical Components and Wiring Diagrams

4-1 Outdoor Unit Circuit Board Arrangement

Layout and identification of components within the outdoor unit's circuit boards.

4-2 Outdoor Unit Circuit Board Components

4-3 Outdoor Unit Electrical Wiring Diagrams

Electrical wiring diagrams for the outdoor unit.

4-5 BC Controller Circuit Board Arrangement

4-7 BC Controller Electrical Wiring Diagrams

Electrical wiring diagrams for the BC controller.

Chapter 5 Control

5-1 Dipswitch Functions and Factory Settings

5-2 Outdoor Unit Control

Overview and detailed control methods for the outdoor unit.

5-3 BC Controller Control

Chapter 6 Test Run

6-1 Read before Test Run

Essential checks and precautions to perform before conducting a test run.

6-3 Making the Group and Interlock Settings from an ME Remote Controller

6-5 Making Interlock Settings from an MA Remote Controller

6-7 Test Run Method

Step-by-step guide for performing test runs using MA remote controllers.

6-9 Evaluating and Adjusting Refrigerant Charge

Methods for evaluating and adjusting refrigerant charge for optimal performance.

Chapter 7 Troubleshooting Using Error Codes

7-1 Error Code and Preliminary Error Code Lists

A comprehensive list of error codes and their preliminary codes for troubleshooting.

7-2 Error Code Definitions and Solutions: Codes [0 - 999]

Definitions and solutions for error codes in the 0-999 range.

7-3 Error Code Definitions and Solutions: Codes [1000 - 1999]

Definitions and solutions for error codes in the 1000-1999 range.

7-4 Error Code Definitions and Solutions: Codes [2000 - 2999]

Definitions and solutions for error codes in the 2000-2999 range.

7-5 Error Code Definitions and Solutions: Codes [3000 - 3999]

Definitions and solutions for error codes in the 3000-3999 range.

7-6 Error Code Definitions and Solutions: Codes [4000 - 4999]

Definitions and solutions for error codes in the 4000-4999 range.

7-7 Error Code Definitions and Solutions: Codes [5000 - 5999]

Definitions and solutions for error codes in the 5000-5999 range.

7-8 Error Code Definitions and Solutions: Codes [6000 - 6999]

Definitions and solutions for error codes in the 6000-6999 range.

7-9 Error Code Definitions and Solutions: Codes [7000 - 7999]

Definitions and solutions for error codes in the 7000-7999 range.

Chapter 8 Troubleshooting Based on Observed Symptoms

8-1 MA Remote Controller Problems

Troubleshooting common issues with MA remote controllers.

8-2 ME remote Controller Problems

8-3 Refrigerant Control Problems

8-5 Pressure Sensor Circuit Configuration and Troubleshooting Pressure Sensor Problems

8-6 Troubleshooting Solenoid Valve Problems

8-7 Troubleshooting Outdoor Unit Fan Problems

8-8 Troubleshooting LEV Problems

8-9 Troubleshooting Problems with Major Components on BC Controller

8-10 Troubleshooting Inverter Problems

Comprehensive troubleshooting guide for inverter-related issues.

8-12 Measures for Refrigerant Leakage

8-13 Compressor Replacement Instructions

8-14 Solenoid Valve Block and Check Valve Replacement Instructions

8-16 Troubleshooting Problems Using the LED Status Indicators on the Outdoor Unit

Chapter 9 LED Status Indicators on the Outdoor Unit Circuit Board

9-1 LED Status Indicators

9-2 LED Status Indicators Table