Last night I had one of my leak detectors turn off my system without any water detected. I have one placed on the floor between the stand and Apex cabinet sitting on a paper towel. Its been like this for almost 2 years without any problems. I unhooked it and made sure everything was dry and hooked it back up to have it alarm again. Is it possible that the sensor went bad or some other problem I should look for? Any help is appreciated. Thank you.