If yours doesnt work that way and youre still under warranty have newmar fix it.
Fantastic fan rain sensor override.
Some do and some do not.
Push and hold the up down button again red light goes out sensor is reenabled.
This model comes with a rain sensor that automatically closes the dome when wet.
Realizing that the fantastic fans are basically worthless because the rain sensor overrides the fan operation i disabled all three fan rain sensors by cutting the wires running from the rain sensor to the fan circuit board.
Depends upon the model.
Below are four photos showing how to disable the rain sensor.
The simple reverse switch changes the direction of the fan blades drawing air in or out of the vehicle.
If it has that option there will be a switch that says rain sensor override or shutoff.
Now all fans are working properly.
Here are some generic instructions.