Hi everybody just after some advise as I’m new to this. Just wondering how to either reset my controller or set it to get rid of the error code of in the battery lie it says charger off . How do I get it to come back on? I have tried a few things but can’t work it out,can someone avise me how to get it to turn on please
In the app - tap the message with the error code - what is the reason for the charge controller being off?
The controller will be off if it’s dark or you have no panels connected. Blue light should flash every 5 seconds or so. If it’s an actual fault it should have a little orang exclamation mark or a message saying what the exact issue is. Charger will stay off until you rectify the problem such as “PV overvoltage” if there’s no mention of a fault, your panels are either not connected, it’s night time, or you have a fried connection in a panel or in the wiring between panel and controller.
Thanks for the reply’s. We got it sorted. The wires coming into to roof were wired back to front eg black positive and red negative. We have since rectified this. As I’m a newbie at this this was good learning. We also learnt how to read a multi meter properly, negative symbol comes up when round the wrong way, Just a lesson learnt don’t connect to the Victron mppt 100/50 controller back to front.lucky it didn’t destroy my new controller phew. Controller is up and running now. We are about to add a 300amp lithuim battery to it this week to replace the 2 120amp agm batteries. Interesting reading about the 3 225 panels as this is what we have and we get approximately 70v . We can’t hook the 3 panels in parallel because our amps would run over the 30amp connector capacity. The only way I could do it would be 2 panels in series and one in parallel with two wires feeding into the controller is that correct. That way I would get the best of both ways for shading but my voltage would drop to about 45v
If you have 2 in series and one in parallel you will get at most 2 panels worth of power. This is not ideal. What you need to do is wire 2 panels in parallel back to the controller and the third panel directly to the controller and combine them on a bus bar and then into the controller. This avoids running the MC4 connectors or wires at too high current. Or get a proper combiner box at the panels and suitable wire back to the controller.