Good afternoon,
I am using MPPT controllers in a streetlight application.
5 units of smart MPPT 20A and 3 units of smart MPPT 10A are used.
4 units of 20/100 mppts and 2 units of 10A mppt seems not working properly anymore. The float voltage doesn't reach the right value.
It happened studently last 10 to 15 days and it has been working properly for more than six months. We changed only the operation mode yesterday from batterylife to Conv. Algo 1. Streetlight mode was always active. The lights are programmed to switch ON for 7h per night.
The float voltage is now approx. 24Vdc for 24V system and 12V for 12V system. We don't have problem with the meteo, it's sunny all the time.
You can find screenshot from the Victron APP for one of the signage, We can see the same phenomena for almost all the site.
We updated and restarted the MPPTs 4 days ago for some of them but no change happened.
Thank you for your help. Fist time I am facing this issue.
