WHY DOES THE FAN SPEED CHANGE WHEN OPERATING IN AUTO MODE?
When the unit is set on the “Auto” mode and cycling off and on, it has been equipped with and Energy Savings feature. The unit will run on full power until it gets to within 2 degrees of the desired temperature. At this point it will automatically go into an energy savings mode which shuts down 2 of the heating elements and lowers the fan speed. Not only will this save energy, it also keeps the room temperature closer to the desired temperature. If the room temperature should fall below 2 degrees of the desired temperature, the unit will return to the full power mode until the desired temperature is reached again.