Originally Posted by skiman
Our 21' has the electronic thermostat. The air conditioner fan noise is deafening. Is there a way to control the fan speed in cooling mode?
Yes. Press the On/Off Mode button until the fan green LED is lit. The LCD will show Lo (Low), Hi (High) or Au (Auto). Press the + or― button to select the desired fan speed. So, if you want it quieter, select "Lo". Then, just use cooling mode and the fan will run low.
It will also run on low when in Auto mode, once the trailer approaches the temperature set on the thermostat.