So I decided to test the amperage on my MPPT. Stuck multimeter probes on the positive and negative for PV In and got a spark and a bang.
Now my MPPT no longer charges my batteries and the voltage reaches about the battery voltage and no more. I have about 200V coming in from my panel array but the MPPT shows 53V / 54V, just a bit more than my battery bank Voltage.
Also, if the system is off I test the 200V coming in on my PV disconnect breaker but if it is on it seems to equalise with the 53V / 54V the MPPT is stuck on and my multimeter gives a 53V / 54V reading on my PV disconnect MCB.
What have I done?