AC problem
My auto fan hi low system keeps changing speeds on its own. Anyone changed control board and thermostat to fixx this? My current board is 3313199.000 and thermostat is 3313195.012. This is a terrible ...
Forum Discussion
If it's a dometic unit and thermostat, it's a standard issue. Mine has done that since new and I was told it's designed to operate like that in auto mode. I got tired of it and run my fan in Hi, or low mode instead of auto. The other odd design flaw is that if you run your fan on high or low and then need to run your furnace the AC fan will will run when your set your furnace to on. The fix for that is to set your fan mode on auto when using the furnace.
