I have a MPPT 450/100 and got the error #200 this morning. Cloudy day with little sun and would have only been pulling in 400 watts or so, but reading 0 with the error message.
Sounds like this is going to be a warranty issue, but meanwhile, I was only using input #2 with nothing on #1. If I move to input 1, might it work while I'm waiting for my replacement unit? Basically, is the DC/DC converter shared between inputs or individual for each?
Thoughts?