I have 3.2 kVA solar inverter with MPPT charge controller along with six 340 W solar panels installed. What I have noticed is that the inverter stops drawing power from PV though there is bright sun light. The inverter draw all power from utility only. In this phase, I have checked with the amp meter that there are no current even in wires coming from solar panels. But then I switch off utility to inverter and in few minutes inverter starts drawing power from PV and current come back in wires coming into inverter from PV modules.
This happens often during the day and I fail to understand why inverter is doing so because every time it is switched to utility all solar power is being wasted and I am still paying for utility.
Any suggestions would be appreciated.
PS: Inverter is set to draw power first from PV then battery and then utility.