Hi everyone I need some help, please…
Last weekend we moved into a house we recently bought. It has a PV system with batteries that is grid tied, and a Mecer inverter. Last night during load shedding my wife put the kettle on and it tripped out the power (which was obviously running off the batteries, though we didn’t realize it was load shedding at the time). We had used the kettle in load shedding before, during the day, so I believe that the fact it was at night without any support from the PVs meant the backup (batteries) couldn’t cope. Lesson learned that we need to be conscious of which appliances we use during load shedding!
However, since then we haven’t been able to use the backup system (batteries) at all. When the system “tripped”, I switched over from using the backup (batteries) to fully drawing from the grid, put since then I haven’t been able to switch back to the backup - there’s just no power coming through. I’ve checked the DB boards and there aren’t any switches that tripped. I also checked the two 22x58 fuses on the line between the batteries and the inverter: I’m not sure how to tell if they’re blown or not but they don’t look damaged in any way.
Any ideas on what could be wrong or how to trouble shoot this? We weren’t given any manuals or instructions or anything. Hoping it’s something simple and I can avoid paying for a call-out.
thanks!