Recently I lost a main hose and all the oil out of the hydro system, I replaced the hose and refilled the hydro oil and changed out the hydro filter. Started the machine and after about 15 min the replace filter warning light came on. I assumed that i just stirred up something. So today I again replaced the filter and the light never even went off. Am I missing something, why won't the light of off. I don't want to mess up anything but I hate to just keep replacing the 60 dollar filter over and over.