I have recently purchased a 2010 coleman Utah. It has a factory installed Atwood heater, model 7916-II. The problem is, if i take the cover off and hold the reset button, the heater works perfectly. As soon as I let go of the button, the heater kicks off and blinking red led comes on 1 blink every 3 seconds or so. Any ideas, did not see any exhaust restrictions etc.. Possible sail switch concern. Any help would be greatly appreciated.