Does it make any odd noises when it moves? (clicking, scraping, screeching, etc)
There is a magnet switch (usually on the screen door & the door frame) that sends power to the stair motor to extend or retract the stairs depending on whether the door is open or closed. Make sure that switch lines up when the door is closed.
If something jammed (either on extending or retracting) the gear may have stripped.
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Eric
North Carolina
2015 ACE 30.1, 2017 RAV4, 1999 F250, 1991 Honda ST1100, 1984 Alfa Romeo Spider, 1981 Alfa Romeo GTV6, 1961 MGA
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