pranam

haha. I'm gonna go with UFO! I need more alien tech

Hey everyone! I've been a voyeur here for about 2 years but finally managed to get something done at my flat and I'd just like to thank everyone for being so helpful and open in sharing their knowledge and experiences!
 
I've installed the following:
Goodwe 5048-ES
8 x 390 watt Canadian Solar panels
6kwh of Pylontech lithiums (2.5+3.5) - and potentially another 3.5 next week.
Solar geyser
 
I have pretty decent sun and the system is generating about 15kwh a day. Even yesterday was decent with 13kwh considering all the cloud cover.
 
I do have one issue though which I can't figure out. As one does, I've been really punishing the system to test out what can/can't be done. So I've basically had Eskom turned off whenever I'm home. During the first few days I was able to use my kettle, microwave, oven, hairdryer, washing machine (on a hot wash), tumble dryer. All of this was run at night with Eskom off. I was pretty happy with everything as the biggest load according to the SEMS portal was about 2600 watts. I'm not sure what the peak load was as the app only tracks every 5 minutes. The last 2 days everything has stopped working though :( I tried using my kettle and the power tripped. I used my oven and the power tripped. I've spoken to the installer who is going to come back to test the system but I don't understand why it would just change. The other issue is that it's unpredictable now. So kettle on yesterday and it trips, kettle on today and it's fine. Luckily, during all my tests, I've had Eskom to enable me to restart the system but I'm not sure what to do if it trips when Eskom is off.
 
My theory is that the batteries are only pumping out 62 amps max and I need another battery to meet the surge load. The extra battery would give a max amps of 99 or 4.7kw which matches the inverter nicely. I'm really hoping it's not the inverter that's now unable to support the loads. I still don't understand why it worked so perfectly initially and now it's not. Pretty much the only change I made between the working days to not working days was allowing my excess PV to go back into the grid. I'm not sure if this is overworking the inverter during the day or anything so then it struggles with surge loads but I am tempted to put the inverter back into idle mode to see what happens.
 
Any thoughts/advice would be greatly appreciated

Ok it's sorted!
 
Goodwe HQ remotely reset my inverter to run 100% of BMS recommended load. If anyone else runs into the same issue just call Goodwe support and they'll sort it out for you