I have 4 flat solar panels. One of them has a lot of condensation at the top of the panel. It has formed at the top and running down the inside of the glass. The other 3 are perfect, no condensation at all. Has anyone come across this before?
I haven't myself but it happened a friens of mine before, and it turned out that there wasn't a proper seal around the panel so air was getting in and condesing on the glass. Might wana get it looked at by whoever installed it and look up your warranty