Mine, CO/Prop. detector, went off last fall after we got set up in the RV prk. Those are irritating SOB's for sure. Bought a new one and pitched the old one, a 2011 model, out. No more problem.
Just beat it to death with $$$$$. Works most of the time and makes life much more pleasant..
2012 JAYCO BUNGALOW Jayflight 40FER
2004.5 Dodge Ram; CTD; 3500 Dually; CC; 4x4; 6 spd. 5600; Smarty Jr.