Hi Guys
I bought a Mecer 3kva inverter in December 2018 and 4 x 12v Gel batteries.
Did a simple connection, ie batteries to inverter / mains to inverter, inverter out powered a few ac items with no problems.
A week ago got my electrical contractor to wire into house DB board with dedicated breakers etc, cut utility power and fed 230 v to a dedicated phase which powers fridge and DSTV, all fine for a few minutes then LCD flashing with buzzer and fault light full on.
Since then cannot get inverter to power up normally.
If inverter connected to mains correctly how can inverter blow or is it a dud inverter ?