I had a grid failure that lasted 10 minutes.
My muliplus ii started inverting.
My batteries were complety full.
After grid restore the multi swtched back to grid and did this for about 10 minutes:
Every few seconds it started humming very loudly and consuming 10 to 15 amps.
After a second or so it stopt, power usage returned to normal, and the humming stopped.
Then it did it again.
This wend on for about 5 to 10 minutes, and then it returned to normal.
I had power outages before and this never happened.
It makes me wonder what is happening.
Should I be worried?
Pieter
