AC/ generator question June 22, 2020, 10:41:34 pm Kind of a Long winded 2 part deal, I’ve got a 99 U320, 12kw powertech generator, and 3 newer-ish domestic air conditioners (I’ve had this coach for just over a year, they were supposedly new a year or so before I bought it) had a bearing go out in the generator head, replaced that, and the generator was putting out 175 volts. I slowed the engine speed down until it was putting out 120. Not sure if that messed with the wattage/amperage output because now none of the ACs will produce cold air. Worked fine for a couple of weekends, now just the fan runs, and what sounds like the compressor trying to start. I’ve ordered a replacement voltage regulator and going to put the generator back to the correct RPM, but what could I have screwed up in the AC units? I’ve read that they are problematic, but I’d have a hard time believing all 3 would fail within a week without some sort of outside interference.