Hi serge,
I've had this problem, several times. The bottom line, for me, was water. To make a long story short, either the wind sensor, control board or both are broke. When you get the awning repaired, have the tech remove the roof mounted wind sensor. Look to see if there is a hole in the roof, for the signal wire, that has not been sealed. Make sure the tech seals the hole. Next, have the tech drill a 3/16" hole at the bottom of the new sensor. This will allow water to drain from the sensor. The hole should face the rear of the coach.
It seems what happened to me was that water would get into the sensor housing and flow down the wire to the control board.