DC&MC I think have the correct answer. It the awning comes in properly when a battery is hooked directly to the motor, there is an electrical problem with the wiring somewhere. I had same problem. I was told it could be that the wire size was too small. The awning manufacturer rep told me Newmar put in large enough wire so look for the problem in a connection or a splice. Found a bad splice in a box behind passenger seat where awning, patio light, and a 12 volt outlet were wired. A new splice and problem solved. Unfortunately it was solved after Newmar sold me a new awning motor and controller that was not needed and did not solve the problem. The problem was intermittent and only occurred when the sun shined on and heated up the exterior of the wall where the electrical box was located. Look for faulty wiring or a wire size is too small.