wmpbauer Report post Posted June 28, 2011 I have a new 2011 Phaeton 40QTH w/ 3 rooftop units. We are experiencing difficulty with the thermostat consistently reading internal temps and turning on or shutting off the A/C. Tiffin replaced the RV Comfort.ZC thermostat. It was intermittently dropping zones. The new one doesn't seem to be reading the sensors. We are either stuck in constantly on or won't shut off. The result is that we are either freezing or broiling. Has anyone else experienced this phenomena? How to correct it? All help appreciated. Share this post Link to post Share on other sites
wagon217 Report post Posted July 25, 2011 My suggestion is to call Tiffin Service, I generally contact Bret at ext 3301, and explain the problem. They will give you a response that might include a few things to check. Once you have an idea as to what is the cause take your Phaeton to your dealer and explain to them the fix (fixes). My thought is whomever changes your thermostat it wasn't correctly set up. Share this post Link to post Share on other sites
wmpbauer Report post Posted November 7, 2011 I got it fixed......turns out the sensor in the rear ac unit had fallen off the coils. Reattached and then did a reset on the thermostat and all is well. Share this post Link to post Share on other sites
wolfe10 Report post Posted November 7, 2011 Thanks for the update. Glad it is back working. Share this post Link to post Share on other sites
