John

May be the internal fuse if the mppt voltage shot up during the failure?
 

May be the internal fuse if the mppt voltage shot up during the failure?
 

You could also consider getting a stand alone mppt like victron (costs the same as a new inverter though) or some other brand 

You could also consider getting a stand alone mppt like victron (costs the same as a new inverter though) or some other brand 

Did you buy the new USB Cable required to connect to the US3000c. I got mine from the solar assistant site and it worked with ICC

I think I used 3 heat sinks but they are a couple of rand each. Please let me know how it goes  RE Solar assistant. its always nice to see real world opinions
 

I currently use a Ryobi 6700k with AVR on my Axpert 4048 inverters. I have to set both to appliance and they pickup the generator and charge the batteries. The other inverter I use is a 2000w turner morris inverter generator. I can only charge one inverter at a time using this but I can leave the inverter set to UPS mode. This is underpowered so if the load increases the inverter takes over until the load is decreased and then the generator continues charging. 
Overall I think an inverter generator is the solution but I need one a lot bigger than what I have. The ryobi works in bypass but you expose your appliances to the generator ac waveform which is admittedly nuts. 

I knocked together a ve.direct cable yesterday it's a serial cable with an FTDI serial to USB converter very easy to make and cheap. Probably cost me R100?