Table Of Contents - Mitsubishi Electric PUHY-HP144TSHMU-A Service Handbook

CONTENTS
I Read Before Servicing
[1] Read Before Servicing.............................................................................................................. 3
[2] Necessary Tools and Materials ................................................................................................ 4
[3] Piping Materials ........................................................................................................................ 5
[4] Storage of Piping ...................................................................................................................... 7
[5] Pipe Processing........................................................................................................................ 7
[6] Brazing...................................................................................................................................... 8
[7] Air Tightness Test..................................................................................................................... 9
[8] Vacuum Drying (Evacuation) .................................................................................................. 10
[9] Refrigerant Charging .............................................................................................................. 11
[10] Remedies to be taken in case of a Refrigerant Leak............................................................ 11
[11] Characteristics of the Conventional and the New Refrigerants ............................................ 12
[12] Notes on Refrigerating Machine Oil...................................................................................... 13
II Restrictions
[1] System configuration .............................................................................................................. 17
[2] Types and Maximum allowable Length of Cables .................................................................. 18
[3] Switch Settings and Address Settings .................................................................................... 19
[4] Sample System Connection ................................................................................................... 25
[5] An Example of a System to which an MA Remote Controller is connected ........................... 26
[6] An Example of a System to which an M-NET Remote Controller is connected ..................... 36
[7] An Example of a System to which both MA Remote Controller and
M-NET Remote Controller are connected .............................................................................. 38
[8] Restrictions on Pipe Length.................................................................................................... 40
III Outdoor Unit Components
[1] Outdoor Unit Components and Refrigerant Circuit ................................................................. 45
[2] Control Box of the Outdoor Unit.............................................................................................. 47
[3] Outdoor Unit Circuit Board...................................................................................................... 48
IV Remote Controller
[1] Functions and Specifications of MA and ME Remote Controllers .......................................... 55
[2] Group Settings and Interlock Settings via the ME Remote Controller .................................... 56
[3] Interlock Settings via the MA Remote Controller .................................................................... 60
[4] Using the built-in Temperature Sensor on the Remote Controller.......................................... 61
V Electrical Wiring Diagram
[1] Electrical Wiring Diagram of the Outdoor Unit ........................................................................ 65
[2] Electrical Wiring Diagram of Transmission Booster................................................................ 66
VI Refrigerant Circuit
[1] Refrigerant Circuit Diagram .................................................................................................... 69
[2] Principal Parts and Functions ................................................................................................. 70
VII Control
[1] Functions and Factory Settings of the Dipswitches ................................................................ 77
[2] Controlling the Outdoor Unit ................................................................................................... 83
[3] Operation Flow Chart.............................................................................................................. 94
VIII Test Run Mode
[1] Items to be checked before a Test Run................................................................................ 101
[2] Test Run Method .................................................................................................................. 102
[3] Operating Characteristic and Refrigerant Amount................................................................ 103
[4] Adjusting the Refrigerant Amount......................................................................................... 103
[5] Refrigerant Amount Adjust Mode.......................................................................................... 106
[6] The following symptoms are normal. .................................................................................... 108
[7] Standard Operation Data (Reference Data) ......................................................................... 109
IX Troubleshooting
[1] Error Code Lists.................................................................................................................... 117
[2] Responding to Error Display on the Remote Controller........................................................ 120
[3] Investigation of Transmission Wave Shape/Noise ............................................................... 185
[4] Troubleshooting Principal Parts............................................................................................ 188
[5] Refrigerant Leak ................................................................................................................... 206
[6] Compressor Replacement Instructions................................................................................. 208
[7] Troubleshooting Using the Outdoor Unit LED Error Display................................................. 210
X LED Monitor Display on the Outdoor Unit Board
[1] How to Read the LED on the Service Monitor ...................................................................... 213
HWE0716A GB