My 2014 Sundance XLT has the Dometic Thermostat that controls the AC and Furnace through the control box in the AC intake box. When regulating the temperature, as the thermstat calls for the furnace to come on, there are numerous rapid loud clicks over about 30 seconds coming from the control box in the AC, then finally the furnace blower comes on. As the temperature comes up and the thermostat is turning off the furnace, there is a loud "explosion" sound from the furnace area and after a bet the fan turns off. The thermostat works fine when controlling the AC and if you start or stop the furnace manually by raising or lowering the temp setting all works fine. I have replaced the thermostat but made no differnece. The problem must be in the control box in the AC. I have looked for recall info but don't find anything. The clicking is very annoying. Wakes me up at night. But the explosion sound at shut down seems dangerous as well as annoying. Has anyone else had this problem?