You must be referring to the fan that is in the power converter unit, which is generally combined with the 120V circuit breakers and the 12v fuses. The power converter takes 120v and makes 12v to charge the batteries and run the 12v items such as fans, lighting, control circuits for the fridge and other devices.
Yes, it is temp operated. so if the temps are high, the fan will be running. It is normal.
Formerly 2007 View H.
2008 Thor/Dutchman Freedom Spriit 180, 20 ft basic travel trailer towed with a 2003 RAM 2500 CTD, 6 spd manual. Temporary until I find my lifetime trailer.
SOLD--2007 Winnebago View 523H,