Hello
I,m sorry that you write in English.
I have following problems our Kaco Powardor 33.0 TL3 and more precisely with DC input.The inverter limited DC voltage to 230V some time without any signal on display.Do this without any logic.When I disconnect string from the input and measure the voltage normally gives about 900 volts at idle. Do not do it constantly but reflects to the graph of production and there are days in which the tragic situation and all other days is almost perfect. The corresponding input has two strings on panel 22 x 180Wp.
Can anyone help me with this problem.
Or at least point me where could be the problem.
Please