overdrive

Thanks for the guidance. I took a working panel, made a fimware dump using stm32cubeprog and blew the backup to the dead unit. All working fine now.
Thanks!

Thanks for the guidance. I took a working panel, made a fimware dump using stm32cubeprog and blew the backup to the dead unit. All working fine now.
Thanks!

3S is where people get issues with the king going to 0W output. I had that for 1 month and went to 2S no issue for 5 months.
 
Q: I have a 145 V max PV model. Why doesn't my inverter-charger use any/all of available PV some of the time?

A: I note that the 145 V figure is the absolute, never-exceed maximum. It's not a "let me see if I can squeeze under that limit" thing. At a panel voltage of 145 V, PV power is limited to zero. At 144 V, the power is restricted to 6.7% of maximum. Even at 130 V, where the power is not restricted at all, the solar charge controller seems to run much hotter, and may limit itself due to temperature. PIP-5048MK (Axpert King) models seem to be particularly sensitive to high PV voltage. What this means in practice is that with 72-cell panels (or 144-half-cell panels), which are the most common type as of 2020, you can only wire them 2S (two panels in series). You can wire as many strings of two panels as needed, but as per FAQ 5, don't exceed 10-20% of rated PV power (rated power is now usually 4000 W for 5 kVA models). Wiring 3S (3 panels in series per string) will almost always lead to trouble if you're using 72-cell panels. 60-cell panels can be run in 3S, and will probably work better in 3S than 2S. Remember also that the Voc of a panel is given at standard operating conditions and 25°C; panel voltage typically increases about 7% at 0°C.

This problem is becoming worse as panels become larger and larger in power output. Part of how this is achieved is that the cells output a higher voltage than their predecessors.  

Yikes! There has to be some headroom for spikes as well; even 200 V is a bit risky, depending on how low induction the design is (not very, I suspect).

Looks like they are selling products with incorrect specifications and should be pulled from the market. Under the CPA they do not meet "fit for purpose"