Table of Contents
CONTENTS
I Read Before Servicing
[1] Read Before Servicing.............................................................................................................. 3
[2] Necessary Tools and Materials ................................................................................................ 4
[3] Piping Materials ........................................................................................................................ 6
[4] Storage of Piping ...................................................................................................................... 8
[5] Pipe Processing........................................................................................................................ 8
[6] Brazing...................................................................................................................................... 9
[7] Air Tightness Test................................................................................................................... 10
[8] Vacuum Drying (Evacuation) .................................................................................................. 11
[9] Refrigerant Charging .............................................................................................................. 12
[10] Remedies to be taken in case of a Refrigerant Leak............................................................ 12
[11] Characteristics of the Conventional and the New Refrigerants ............................................ 13
[12] Notes on Refrigerating Machine Oil...................................................................................... 14
[1] System configuration .............................................................................................................. 17
[2] Types and Maximum allowable Length of Cables .................................................................. 17
[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] Restrictions on Pipe Length.................................................................................................... 34
[1] Outdoor Unit Components and Refrigerant Circuit ................................................................. 39
[2] Control Box of the Outdoor Unit.............................................................................................. 41
[3] Outdoor Unit Circuit Board...................................................................................................... 42
[1] External Dimensions............................................................................................................... 49
[2] Indoor Unit Components and Internal Structure ..................................................................... 55
[3] Control Box of the Indoor Unit ................................................................................................ 57
[4] Indoor Unit Circuit Board ........................................................................................................ 58
[5] Fan.......................................................................................................................................... 59
[1] Functions and Specifications of MA Remote Controller ......................................................... 63
[2] Using the built-in Temperature Sensor on the Remote Controller .......................................... 63
[1] Electrical Wiring Diagram of the Outdoor Unit ........................................................................ 67
[2] Electrical Wiring Diagram of the Indoor Unit........................................................................... 68
[3] Electrical Wiring Diagram of Transmission Booster................................................................ 72
[1] Refrigerant Circuit Diagram .................................................................................................... 75
[2] Principal Parts and Functions ................................................................................................. 78
[1] Functions and Factory Settings of the Dipswitches ................................................................ 85
[2] Controlling the Outdoor Unit ................................................................................................... 92
[3] Operation Flow Chart............................................................................................................ 102
[1] Items to be checked before a Test Run................................................................................ 109
[2] Test Run Method .................................................................................................................. 110
[3] Operating Characteristic and Refrigerant Amount................................................................ 111
[4] Adjusting the Refrigerant Amount......................................................................................... 111
[5] Refrigerant Amount Adjust Mode.......................................................................................... 114
[6] The following symptoms are normal. .................................................................................... 116
[7] Standard Operation Data (Reference Data) ......................................................................... 117
[1] Error Code Lists.................................................................................................................... 129
[2] Responding to Error Display on the Remote Controller........................................................ 132
[3] Investigation of Transmission Wave Shape/Noise ............................................................... 189
[4] Troubleshooting Principal Parts............................................................................................ 192
[5] Refrigerant Leak ................................................................................................................... 211
[6] Compressor Replacement Instructions................................................................................. 213
[7] Troubleshooting Using the Outdoor Unit LED Error Display................................................. 215
HWE10190
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Troubleshooting
