According to the info below you cannot turn off the auto fan feature. It has a mind of its own.
1) If the fan is ON it will cycle up and down to deal with the temp.
2) If the fan is off, (CANADIAN VERSION DOES NOT HAVE
THIS FUNCTION) the Heat Sentry system will automatically turn
the fan on to its highest speed when the temperature is above
normal. When the Heat Sentry system is on, the light above the
high speed fan button will flash on and off. After the temperature
has lowered to normal, the fan speed will be reduced until the
temperature has stabilized, then the fan will turn off.
3 months ago
Woodland Hills, Los Angeles, CA, USA