Can you bypass the digital controller and see if the pump runs? We have a problem with a digital clock radio in our bus when operating on the modified sine wave inverter, but it does not make then inverter make strange noises, the only thing that happens is that the clock runs fast (I think the clock is counting each step in the modified sine wave). Can you connect the pump to "regular" 110 volt and get an amp reading on the pump? Jack
You guys are finding out why modified sine inverters are cheap. There's a LOT of things they won't properly power up, and they cause a lot of trouble."Modified sine" is mostly salesmanship BS that in english says "square wave inverter with meager attempt at filtering the crap out of their output". The deal is that many things, like motors, need a pure sine wave to run, because they operate almost solely on the 60 hz fundamental frequency, the sine wave.A modified sine inverter contains tons of harmonics (energy at higher frequencies than 60hz) in addition to the sine wave, and all of the energy in those harmonics (and it's a lot) show up in things such as motors, as heat. So motors get much hotter than they should, if they decide to operate at all, which many won't. I'd rather have nothing than a modified sine inverter. They're good for running lightbulbs and electric drill motors, but in my opinion not much more. And the interference they generate screws up a lot of electronic things, especially computer and wireless related...Spend the bucks, get a true sine, and get over your troubles!!
Dallas, while you're doing wonders with your antique computer...you need to get into the 21st Century. Mayhaps we could collectively bring some of our old computers to Timmonsville in October and build you something worth your mettle?Egads man! 400Mhz went out with high button shoes! Bob