Quote:
Originally Posted by sk734
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 system made by Dometic. New updated system from Dometic is available but I am not sure it will help. Kit# 3316230.014. Thanks for your help in advance.
Steve
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When you set the fan speed to Auto, the fan will automatically switch speeds depending on how far from setpoint the temp is. (I.E. When running the A/C it runs on high until it starts getting close to setpoint and then it stops for a couple seconds and switches the fan to low. As it drifts away from setpoint it stops the fan again and switches it to high). As aggravating as that may seem, that's the way it's designed.