Guidance using Zamp Solar Controller

2oldman wrote:

ktmrfs wrote:
Not true on the "under cover panels will do nothing".

Then he better disconnect them.

My panels are under the cover of a metal roof and the controller says nothing is happening.

metal roof, yes, but under a typical woven cover my experience along with several others is that a 150watt panel will give about 1A under clear sky in the winter. The woven fabric covers are not completely blocking all the wavelengths of light the panels can respond to.