Table Of Contents - Mitsubishi Electric PUHY-P250YNW-A Service Handbook

CONTENTS
Chapter 1 Check Before Servicing
1-1 Preparation for Piping Work.................................................................................................................. 1
1-2 Handling and Characteristics of Piping Materials, Refrigerant, and Refrigerant Oil ....................... 3
1-3 Working with Refrigerant Piping........................................................................................................... 8
1-4 Precautions for Wiring ......................................................................................................................... 12
1-5 Cautionary notes on installation environment and maintenance.................................................... 14
Chapter 2 Restrictions
2-1 System Configurations .......................................................................................................................... 1
2-2 Types and Maximum Allowable Length of Cables .............................................................................. 2
2-3 Switch Settings....................................................................................................................................... 3
2-4 M-NET Address Settings ....................................................................................................................... 4
2-5 Demand Control Overview .................................................................................................................... 8
2-6 System Connection Example .............................................................................................................. 10
2-7 Example System with an MA Remote Controller .............................................................................. 11
2-8 Restrictions on Refrigerant Pipes ...................................................................................................... 19
Chapter 3 Major Components, Their Functions and Refrigerant Circuits
3-1 External Appearance and Refrigerant Circuit Components of Outdoor Unit ................................... 1
3-2 External Appearance and Internal Components of Indoor Unit......................................................... 3
3-3 Refrigerant Circuit Diagrams ................................................................................................................ 9
3-4 Functions of the Major Components of Outdoor Unit ...................................................................... 12
3-5 Functions of the Major Components of Indoor Unit ......................................................................... 15
3-6 Procedure of Separating the Indoor Unit ........................................................................................... 16
Chapter 4 Electrical Components and Wiring Diagrams
4-1 Circuit Board Arrangement ................................................................................................................... 1
4-2 Circuit Board Components.................................................................................................................... 5
4-3 Electrical Wiring Diagrams.................................................................................................................. 12
4-4 Transmission Booster Electrical Wiring Diagrams ........................................................................... 15
Chapter 5 Control
5-1 Dipswitch Functions and Factory Settings.......................................................................................... 1
5-2 Outdoor Unit Control ............................................................................................................................. 9
5-3 Indoor Unit Control .............................................................................................................................. 20
5-4 Operation Flow Chart ........................................................................................................................... 24
Chapter 6 Test Run
6-1 Read before Test Run ............................................................................................................................ 1
6-2 Operation Characteristics and Refrigerant Charge ............................................................................ 2
6-3 Evaluating and Adjusting Refrigerant Charge..................................................................................... 2
6-4 The Following Symptoms Are Normal ................................................................................................. 5
6-5 Initialization Procedure for System Rotation Settings ....................................................................... 6
Chapter 7 Troubleshooting Using Error Codes
7-1 Error Code and Preliminary Error Code Lists ..................................................................................... 1
7-2 Error Code Definitions and Solutions: Codes [0 - 999]....................................................................... 5
7-3 Error Code Definitions and Solutions: Codes [1000 - 1999]............................................................... 6
7-4 Error Code Definitions and Solutions: Codes [2000 - 2999]............................................................. 10
7-5 Error Code Definitions and Solutions: Codes [3000 - 3999]............................................................. 11
7-6 Error Code Definitions and Solutions: Codes [4000 - 4999]............................................................. 13
7-7 Error Code Definitions and Solutions: Codes [5000 - 5999]............................................................. 29
7-8 Error Code Definitions and Solutions: Codes [6000 - 6999]............................................................. 37
7-9 Error Code Definitions and Solutions: Codes [7000 - 7999]............................................................. 57
HWE17020 GB