Table Of Contents - Mitsubishi Electric CMB-WM108V-AA 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 (Refrigerant Circuit) .................................................................................... 9
[8] Vacuum Drying (Evacuation) (Refrigerant Circuit).................................................................. 10
[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] Precautions for handling equipment using R32 .................................................................... 14
[13] Notes on Refrigerating Machine Oil...................................................................................... 21
[14] Water piping.......................................................................................................................... 22
II Restrictions
[1] System configuration .............................................................................................................. 29
[2] Types and Maximum Allowable Length of Cables.................................................................. 30
[3] Switch Settings ....................................................................................................................... 31
[4] M-NET Address Settings ........................................................................................................ 32
[5] Demand Control Overview...................................................................................................... 37
[6] System Connection Example.................................................................................................. 38
[7] Example System with an MA Remote Controller .................................................................... 39
[8] Example System with an ME Remote Controller .................................................................... 52
[9] Example System with an MA and an ME Remote Controller ................................................. 54
[10] Restrictions on Pipe Length.................................................................................................. 57
III HBC Controller Components
[1] HBC Controller Components .................................................................................................. 65
[2] Sub-HBC Components ........................................................................................................... 68
[3] Control Box of the HBC Controller and Sub-HBC................................................................... 72
[4] HBC Controller and Sub-HBC Circuit Board........................................................................... 73
IV Electrical Wiring Diagram
[1] Electrical Wiring Diagram of the HBC Controller and Sub-HBC ............................................. 81
[2] Electrical Wiring Diagram of Transmission Booster................................................................ 93
V Refrigerant Circuit
[1] Refrigerant Circuit Diagram .................................................................................................... 97
[2] Principal Parts and Functions ............................................................................................... 101
VI Control
[1] Functions and Factory Settings of the Dipswitches .............................................................. 105
[2] Controlling HBC Controller ................................................................................................... 106
[3] Operation Flow Chart............................................................................................................ 115
VII Test Run Mode
[1] Items to be checked before a Test Run................................................................................ 123
[2] Operating Characteristic and Refrigerant Amount................................................................ 124
[3] Adjusting the Refrigerant Amount......................................................................................... 124
[4] Refrigerant Amount Adjust Mode.......................................................................................... 128
[5] The following symptoms are normal. .................................................................................... 128
VIII Troubleshooting
[1] Error Code Lists.................................................................................................................... 131
[2] Responding to Error Display on the Remote Controller........................................................ 135
[3] Investigation of Transmission Wave Shape/Noise ............................................................... 183
[4] Troubleshooting Principal Parts............................................................................................ 186
[5] Refrigerant Leak ................................................................................................................... 198
[6] Servicing the HBC controller................................................................................................. 200
[7] Instructions for debris removal operation.............................................................................. 202
[8] Instructions for the air vent operation ................................................................................... 203
[9] Instructions for the water pump replacement........................................................................ 204
[10] Sub-HBC Maintenance Instructions (CMB-WM108,1016V-BB) ......................................... 220
IX LED Monitor Display on the Outdoor Unit Board
[1] How to Read the LED on the Service Monitor ...................................................................... 227
HWE1708A GB