Hi,
I have two PV Strings - 1 connected to a SmartSolar 100/20 and the other (larger) string connected to a SmartSolar 100/50. Whilst the 100/20 works perfectly well, the 100/50 controller occasionally does not restart charging in the morning. This may happen once every 5 to 10 days. I can get it going again by turning charging off then on and all will work fine until next time. If it does not start and I leave it not charging, then it may start charging again the following morning! There doesn't appear to be any consistency as to when it might not start charging.
I reckon this started happening after a firmware upgrade about 3 or 4 updates ago. Each time I try to update to a newly released version I hope that it will fix the issue - but unfortunately not. It used to work perfectly fine for over a year. Both units are configured with exactly the same settings.
Is anybody else getting the same issues? Any suggestions?
Thanks!
David