Chapter 4 Electrical Components And Wiring Diagrams - Mitsubishi Electric HP120TNU-A Service Handbook

Chapter 4 Electrical Components and Wiring Diagrams
4-1 Outdoor Unit Circuit Board Arrangement........................................................................................... 1
4-1-1 Outdoor Unit Control Box........................................................................................................................ 1
4-2 Outdoor Unit Circuit Board Components ........................................................................................... 4
4-2-1 Control Board.......................................................................................................................................... 4
4-2-2 Power-supply board (PS Board) ............................................................................................................. 5
4-2-3 Inverter Board (INV Board) ..................................................................................................................... 6
4-2-4 Fan Board ............................................................................................................................................... 8
4-2-5 Noise Filter............................................................................................................................................ 10
4-2-6 Capacitor Board (CAP Board)............................................................................................................... 12
4-3 Outdoor Unit Electrical Wiring Diagrams ......................................................................................... 14
4-4 Transmission Booster Electrical Wiring Diagrams ......................................................................... 16
4-5 BC Controller Circuit Board Arrangement ....................................................................................... 17
4-5-1 BC Controller Control Box..................................................................................................................... 17
4-6 BC Controller Circuit Board Components........................................................................................ 18
4-6-1 BC Board .............................................................................................................................................. 18
4-6-2 Four-Relay Board.................................................................................................................................. 19
4-6-3 Ten-Relay Board................................................................................................................................... 19
4-7 BC Controller Electrical Wiring Diagrams ........................................................................................ 20
HWE18220_GB