Since installing my Sunsynk 5 Kw grid tied system, my Tacx Flux trainer has burnt the mother board, within a few minutes of connecting it blew. Was repaired by Garmin and blew again within a few minutes. Garmin then replaced with a new trainer and this did the same thing. Any suggestions of why.

The original trainer was run for a number of years on a Victron grid tied inverter, with no problems.