2
V201703A
Table of contents
1. General information.............................................................................................................................................. 3
1.1 Getting start................................................................................................................................................. 3
1.2 Basic topology introduction....................................................................................................................... 3
1.3 Inverter family.............................................................................................................................................. 4
1.4 Overview the inverter................................................................................................................................. 4
1.5 PCB overview.............................................................................................................................................. 5
2. Troubleshooting.................................................................................................................................................... 8
2.1 How to do..................................................................................................................................................... 8
2.2 Check the fault information....................................................................................................................... 8
2.3 Fault condition............................................................................................................................................. 8
2.4 Test step....................................................................................................................................................... 9
3. Checking and measuring guide........................................................................................................................ 10
3.1 Check the battery side components...................................................................................................... 10
3.2 Check the bus side components............................................................................................................ 16
3.3 Check the buck circuit.............................................................................................................................. 18
3.4 Check the INV full bridge ........................................................................................................................ 20
3.5 Check the MPPT SCC board.................................................................................................................. 24
4. Disassembling guide.......................................................................................................................................... 25
4.1 Open the case........................................................................................................................................... 25
4.2 Remove the control board....................................................................................................................... 26
4.3 Remove the fan paper and the SCR board and the MPPT board.............................................................. 27
4.4 Remove the main board.......................................................................................................................... 30
5. Cables connection.............................................................................................................................................. 33
