Hi there, i'm new here and really pleased there are forums like this - otherwise i'd be lost!
I've started a Mini-offgrid System about two or three months ago, starting with a Victron SmartSolar 100/50. It was working pretty good so far (about 173kWh), but when i added more panels + another Victron SmartSolar 100/20 to them, die 100/50 stopped working from one day to another (both "harvesting" about 2 days alongside each other).
Cables are good, so are the fuse to the battery. Module Voltage is good and shown correctly in the Victron App, same for the battery voltage.
BUT the CC doesn't get any amperage out of the modules. The 100/20 on the opposite does its job, charging the same battery bank (2x12V lead acid 280Ah as 24V system).
I've checked everything, swapped out the module string from the 100/20 to the 100/50 but to no avail. When checking voltage on PV-input on the 100/50 (without having anything connected to it) there is about 21V on it - where do they come from? Is this "isc-voltage" to short circuit modules (i.e. when battery is full)?
TL;DR: Charger state is BULK all the time but not charging battery, while showing correct voltage for connected modules and battery. Can connect to it via app perfectly fine, add and remove it from VE.Smart Network and it charged the exact same battery bank for about 2 months but stopped doing so two or three days ago (without changing/touching anything).
Every hint very appreciated!
Thank you for your time!
I've started a Mini-offgrid System about two or three months ago, starting with a Victron SmartSolar 100/50. It was working pretty good so far (about 173kWh), but when i added more panels + another Victron SmartSolar 100/20 to them, die 100/50 stopped working from one day to another (both "harvesting" about 2 days alongside each other).
Cables are good, so are the fuse to the battery. Module Voltage is good and shown correctly in the Victron App, same for the battery voltage.
BUT the CC doesn't get any amperage out of the modules. The 100/20 on the opposite does its job, charging the same battery bank (2x12V lead acid 280Ah as 24V system).
I've checked everything, swapped out the module string from the 100/20 to the 100/50 but to no avail. When checking voltage on PV-input on the 100/50 (without having anything connected to it) there is about 21V on it - where do they come from? Is this "isc-voltage" to short circuit modules (i.e. when battery is full)?
TL;DR: Charger state is BULK all the time but not charging battery, while showing correct voltage for connected modules and battery. Can connect to it via app perfectly fine, add and remove it from VE.Smart Network and it charged the exact same battery bank for about 2 months but stopped doing so two or three days ago (without changing/touching anything).
Every hint very appreciated!
Thank you for your time!