Table Of Contents - Mitsubishi Electric e Series 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] Precautions for handling equipment using R32 ...................................................................... 10
[10] Notes on Refrigerating Machine Oil...................................................................................... 17
II Restrictions
[1] Electrical Wiring Installation.................................................................................................... 21
[2] System Configurations............................................................................................................ 24
[3] Switch Types and the Factory Settings .................................................................................. 25
[4] Configuring the Settings ......................................................................................................... 28
[5] Water Pipe Installation............................................................................................................ 39
III Unit Components
[1] Unit Components and Refrigerant Circuit ............................................................................... 49
[2] Control Box of the Unit............................................................................................................ 51
[3] Unit Circuit Board.................................................................................................................... 53
IV Remote Controller
[1] Using the Remote Controller (PAR-W31MAA) ....................................................................... 65
V Electrical Wiring Diagram
[1] Electrical Wiring Diagram ....................................................................................................... 73
VI Refrigerant Circuit
[1] Refrigerant Circuit Diagram .................................................................................................... 77
[2] Principal Parts and Functions ................................................................................................. 79
VII Control
[1] Functions and Factory Settings of the Dipswitches ................................................................ 83
[2] Operating characteristics and Control Capabilities ................................................................. 91
VIII Test Run Mode
[1] Items to be checked before a Test Run................................................................................ 101
[2] Test Run Method .................................................................................................................. 103
[3] Operating the Unit................................................................................................................. 104
[4] Refrigerant ............................................................................................................................ 105
[5] Symptoms that do not Signify Problems............................................................................... 105
IX Troubleshooting
[1] Maintenance items................................................................................................................ 109
[2] Troubleshooting .................................................................................................................... 114
[3] Troubleshooting Principal Parts............................................................................................ 119
[4] Refrigerant Leak ................................................................................................................... 135
[5] Parts Replacement Procedures............................................................................................ 136
[6] Draining the water from the water-pipes of the unit and from the water heat exchanger ..... 160
X Attachments
[1] R32 saturation temperature table ......................................................................................... 163
HWE20010 GB