I got setup to do some exhaust repair on a friends car .
I was using .035 wire [ but forgot I did not have the correct contact tip - .035 , tried to use .040 ] .

While welding / or trying , the wire would just sputter & never really melt base - just stick little balls of wire stuck to base ?
After trying for about 5-10 min. - the overtemp screen came on ?
So quit after that .

Now have more tips & using the correct tip .035 , also double checked the fluxcore setup / connections , turned the machine on and went to feed the wire through the gun & cable , look at machine and the overtemp sreen is back on - never cleared from the last time [ about a month ] .

So looking for ideas ?

Just for some backround , I took my 1st welding class in 1968 , many yrs. of welding most metals etc. & most all processes .

But this is my 1st inverter machine --- many more adjustments / than the past transformer machines in the past .