The Heart interface was original equipment. Yes I thought it was odd to have a circuit 100% on the inverter unless the inverter just passed the 110 through while on shore power. I will not be replacing the inverter and have wired a 20Amp box for a plug in converter/charger. This circuit is also protected by a GFI which I have replaced. The main breaker panel shows a dedicated circuit for the inverter, all 110 lights and all wall outlets I'm having a hard time understanding why eliminating the inverter has caused a loss of power.Thanks for the reply's.