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CONTENTS
HWE09120 GB
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 ................................................................................................... 26
[5] An Example of a System to which an MA Remote Controller is connected ........................... 28
[6] An Example of a System to which an ME Remote Controller is connected ........................... 38
[7] An Example of a System to which both MA Remote Controller and
ME Remote Controller are connected .................................................................................... 40
[8] Restrictions on Pipe Length.................................................................................................... 42
III
Outdoor Unit Components
[1] Outdoor Unit Components and Refrigerant Circuit................................................................. 49
[2] Control Box of the Outdoor Unit.............................................................................................. 53
[3] Outdoor Unit Circuit Board...................................................................................................... 56
IV
Remote Controller
[1] Functions and Specifications of MA and ME Remote Controllers .......................................... 69
[2] Group Settings and Interlock Settings via the ME Remote Controller.................................... 70
[3] Interlock Settings via the MA Remote Controller.................................................................... 74
[4] Using the built-in Temperature Sensor on the Remote Controller.......................................... 75
V
Electrical Wiring Diagram
[1] Electrical Wiring Diagram of the Outdoor Unit........................................................................ 79
[2] Electrical Wiring Diagram of Transmission Booster................................................................ 84
VI
Refrigerant Circuit
[1] Refrigerant Circuit Diagram .................................................................................................... 87
[2] Principal Parts and Functions................................................................................................. 88
VII
Control
[1] Functions and Factory Settings of the Dipswitches................................................................ 95
[2] Controlling the Outdoor Unit ................................................................................................. 102
[3] Operation Flow Chart............................................................................................................ 115
VIII
Test Run Mode
[1] Items to be checked before a Test Run................................................................................ 123
[2] Test Run Method .................................................................................................................. 124
[3] Operating Characteristic and Refrigerant Amount................................................................ 125
[4] Adjusting the Refrigerant Amount......................................................................................... 125
[5] Refrigerant Amount Adjust Mode.......................................................................................... 128
[6] The following symptoms are normal..................................................................................... 130
[7] Standard Operation Data (Reference Data) ......................................................................... 131
IX
Troubleshooting
[1] Error Code Lists.................................................................................................................... 155
[2] Responding to Error Display on the Remote Controller........................................................ 158
[3] Investigation of Transmission Wave Shape/Noise ............................................................... 237
[4] Troubleshooting Principal Parts............................................................................................ 240
[5] Refrigerant Leak ................................................................................................................... 274
[6] Compressor Replacement Instructions................................................................................. 275
[7] Troubleshooting Using the Outdoor Unit LED Error Display................................................. 278
X
LED Monitor Display on the Outdoor Unit Board
[1] How to Read the LED on the Service Monitor...................................................................... 281