the_uglydog
New Member
Hi Everyone! I have a 10kw Aims off grid inverter. When I first installed it May 2020 it wouldn't load over 40% and would shut off with an overload alarm, on it's control screen the AC voltages had been reading about 20-50 volts below what was actually coming in from the utility, tested at the input terminals, I posted about it here before. The problem went away by itself and it was working perfect since July 2020. It would carry it's normal load of 20-40% with short term loads as high as 90% with no problems. The breaker on the unit for solar/battery input is 120amps DC, the utility output is 80 amps AC. At 40% the DC tests at 45 amps DC and the AC load tests at about 25 amps AC, at 90% the the DC tests at about 80 amps DC and the AC tests at about 50 amps AC. It is set to wide range for AC input 173-260 volts AC, and acts the same even with the utility feed shut off. Well in May 2021 the problem came back after the 1st typhoon. It won't carry a load over 29% and the input voltage readings were low. I had it repaired (defective electronics) and it reads the correct voltage now, but it still won't load over 30% very often. I thought maybe there was a problem of the wiring getting wet so I tried turning off the utility input, each of the breakers in each combiner box one at a time and one box at a time and different output circuits but it doesn't matter, 29-30% it shows overload and shuts off. Has anyone run into anything like this on any brand? Any suggestions on which component could cause this on any brand unit? Could one of the relays cause this? Any thoughts would be appreciated. That's about it. the dog