CDL

Its more when a high wattage load drops the power must go somewhere and goes into the grid for few seconds. Would also be interested in a solution.

Get a 200W load and timer like Sonoff that can be controlled from remote. Set timer to switch this load on at peak production 10h to 14h. On cloudy/rain days switch load off from phone. 
This is a quick/cheap fix if you cannot use more PV power 10h to 14h.

Hi guys,
Can anyone recommend a decent solar installer to help me sort out a solar installation in Johannesburg's northern suburbs? I need somebody reliable and with a good reputation. The system is still – theoretically – under warranty from the guys at Green-World Solar (https://www.green-world.co.za/home) but I just cannot get any joy out of them; it's like they dropped off the end of the planet. I get no responses to emails, no responses to SMSes, no responses to Whatsapp's, my calls aren't answered, et cetera. The system went down a month back and is still not operational. A diode blew on one of the Axpert inverters in early November;  a few weeks back they brought the inverter back in repaired form (by whom, I don't know). They took away one of the BMS' (Revov system - http://revov.co.za/) and I've never heard from them since. And as I say, it doesn't matter what I do, I can't get any comms out of them. No idea why or what's happened. 

Thank you. I found this too yesterday: https://www.thesunpays.co.za/ManualParallel-installation-MKS-4Kva and 5kva.pdf
See item 5 which speaks directly to the issue and reads:
5. Battery Connection WARNING! Be sure that all inverters will share the same sets of batteries. Otherwise, the inverters will transfer to fault mode. WARNING: Be sure the length of all battery cables is the same. Otherwise, there will be voltage difference between inverter and battery to cause parallel inverters not working. Follow below chart to connect batteries. All battery cables are connected from inverters to batteries via the same BUS bar.
I opened the trunking up and couldn't find a busbar. Unless its behind the DC DB, which seems unlikely.