replaced Dometic 4 button thermostat
for anyone being skeptic about replacing the 4 button dometic thermostat to the 5 button, I did that a coupld of weeks ago. I had been having problems (on and off) for years. purchased several old boards and serveral old thermostats. Anyway, I bit the bullet (around $200) and replaced both the thermostat and the control board. Job went easy, no fuss. New thermostat seems to be turning off heat, AC and furnace as it should.
Was on the verge of replacing the whole AC. Hopefully I will be good for a while.