Mine is installed and working perfectly since 4 weeks now. 9kwp solar panels connected (36 panels 250W - 9S4P). Have 48V/600Ah batteries connected. Loads both 110V and 220V (All lights, outlets, fridge, winecooler, microwave, sewage pump, 2 pool pumps, 6 TV's, washing machine, dryer, dishwasher, etc.) I did not connect the airco's, because I have 10 of them, and that would definitely not work with just 10K. But we did an overload test and the inverter then first switched to bypass mode as expected, and shortly afterwards it shut down as it should. We also tested draining the batteries and it switched to bypass mode at the set low voltage, no problem. Switching back to the batteries when the batteries recovered also worked perfectly well. So, all in all, so far it's working like a charm.
The fans can get quite loud, especially when it charges the batteries with high current, like 80 to 130 amps, but since my system is in the garage, that doesn't bother me.
The only downside right now, is the data coming from the inverter over the wifi module. The data is not accurate, because there seems to be a fault in either the hardware or the firmware or both. The self consumption of the machine, which seems to be around 200W on average is not put into calculation correctly. It looks like the internal shunt, that should measure the current from and to the battery has a connection to the internals of the machine on the battery side. So, when charging the battery it will show ex. 20 amps, but only 16 amps flow into the battery and the other 4 amps are self consumption of the machine. And when discharging from the battery, it's the other way around, like showing only 16 amps discharge, because 4 amps go straight to the internal load, but actually 20 amps are flowing out of the battery. This leads to completely wrong charge and discharge data. I am in contact with PowMr because of this, and they promised to look into it. We will see. But anyway, this doesn't have any influence on the operational side.