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Possible Cause:
- Motor polarity reversed
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Solution:
- Disconnect the data cable running from the motor, connected to the gray jumper. 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. Polarity should then reverse. Move dip-switch back into the center position.