Table Of Contents - Mitsubishi Electric CAHV-P500YB-HPB Service Handbook

CONTENTS
I Read Before Servicing
[1] Read Before Servicing.............................................................................................................. 3
[2] Necessary Tools and Materials ................................................................................................ 4
[3] Brazing...................................................................................................................................... 5
[4] Air Tightness Test..................................................................................................................... 6
[5] Vacuum Drying (Evacuation) .................................................................................................... 7
[6] Refrigerant Charging ................................................................................................................ 8
[7] Remedies to be taken in case of a Refrigerant Leak................................................................ 8
[8] Characteristics of the Conventional and the New Refrigerants ................................................ 9
[9] Notes on Refrigerating Machine Oil........................................................................................ 10
II Restrictions
[1] System Configuration ............................................................................................................. 13
[2] Types and Maximum allowable Length of Cables .................................................................. 14
[3] Main Power Supply Wiring and Switch Capacity .................................................................... 15
[4] Sample Installation ................................................................................................................. 17
[5] Switch Types and the Factory Settings .................................................................................. 18
[6] Configuring the Settings ......................................................................................................... 19
[7] Water Pipe Installation............................................................................................................ 25
III Unit Components
[1] Unit Components and Refrigerant Circuit ............................................................................... 33
[2] Control Box of the Unit............................................................................................................ 35
[3] Unit Circuit Board.................................................................................................................... 36
IV Remote Controller
[1] Using the Remote Controller .................................................................................................. 43
[2] Function Settings .................................................................................................................... 48
V Electrical Wiring Diagram
[1] Electrical Wiring Diagram ....................................................................................................... 53
VI Refrigerant Circuit
[1] Refrigerant Circuit Diagram .................................................................................................... 61
[2] Principal Parts and Functions ................................................................................................. 62
VII Control
[1] Functions and Factory Settings of the Dip switches ............................................................... 67
[2] Operating characteristics and Control Capabilities ................................................................. 88
VIII Test Run Mode
[1] Items to be checked before a Test Run................................................................................ 105
[2] Test Run Method .................................................................................................................. 107
[3] Operating the Unit................................................................................................................. 108
[4] Refrigerant ............................................................................................................................ 109
[5] Symptoms that do not Signify Problems............................................................................... 109
[6] Standard operating characteristics (Reference data) ........................................................... 109
IX Troubleshooting
[1] Maintenance items................................................................................................................ 113
[2] Troubleshooting .................................................................................................................... 121
[3] Troubleshooting Principal Parts............................................................................................ 130
[4] Refrigerant Leak ................................................................................................................... 146
[5] Parts Replacement Procedures............................................................................................ 147
[6] Water piping configuration in the unit and how to connect the piping................................... 155
X Attachments
[1] R407C saturation temperature table..................................................................................... 159
HWE15070 GB