Spanish Flyer
New Member
I'm having a bit of a problem from one of my 7 strings; my two Kostal Piko MP Plus 5.02 inverters can take as much as 600 V from either of their two MPPT's and 5.500 W, but for some reason one of the strings as soon as I reach 530V and producing 4.200 W, the inverter shows an error stating the DC current as being too high, switches off and restarts after a few minutes... It will continue to do so as long as the sun is providing the same power. I have tried swapping the strigs between the two inverters, but then the other inverter will fail...
What is more, I installed a brand new Piko MP Plus 5.02 and it is the same problem.
How come not reaching the limit in voltage or watts it still makes all three inverters fail to work? the only thing I have not checked is the amps, but on DC there is not much to calculate having the voltage and watts produced...(around 8-10 Amps).
One more thing; both my Kostal inverters have been working with their strings flawlessly for more than two years (take into consideration the third brand new inverter, having the same problem).
What can go wrong with one string, other than decaying some production percentage after two years?? I'm totally baffled..
What is more, I installed a brand new Piko MP Plus 5.02 and it is the same problem.
How come not reaching the limit in voltage or watts it still makes all three inverters fail to work? the only thing I have not checked is the amps, but on DC there is not much to calculate having the voltage and watts produced...(around 8-10 Amps).
One more thing; both my Kostal inverters have been working with their strings flawlessly for more than two years (take into consideration the third brand new inverter, having the same problem).
What can go wrong with one string, other than decaying some production percentage after two years?? I'm totally baffled..