Disconnect power. Pull down the PCB tray. Unplug the white data cable connected to the Somfy input on the board. Plug the data cable directly into the back of the Somfy wall switch. Move the dip switch toggle on the back of the wall switch into the down position. Press and hold the stop button for 5 seconds and then release. Polority should then reverse. Move dipswitch back into the center position.
Motor is designed for short operations (lowering and retracting), continuous duty. Longer operation causes the motor to overheat and shutoff. This typically happens during installation when testing the screen.
Allow the motor to cool down. Complete cooling can take an hour or more. Heat gain is cumulative and takes time to dissipate. If the motor use is initiated before it has cooled completely, the motor will shut down again when it reaches maximum temperature.