Any idea what's causing the inverter noise? Where do I begin trouble shooting? 2000 watt Xantrex 3 stage inverter.
Three stage... That's an inverter /converter charger combo
And it does have a built in transfer switch, used when it changes mode from inverter to charge, that is the 'pass thru switch' for shore power
Sounds like charge overload from bad batteries, and internal short on one battery cell
BTW shunts are used with a meter for measuring power, the are big precise resistors and don't make any noise
I had to read this thread just to find out what a shunt noise was
