Chamberlain code 1-1
The door won’t close because the safety sensors aren’t connected
Check this first, then a proThe opener can’t find its safety sensors, the two small eyes near the floor on each side of the door. A sensor may be unplugged, or its wire may be cut.
What to do: Follow the thin wire from each sensor back to the opener and look for a loose end or a cut. If the wire looks fine and the code comes back, call a pro.
From the maker’s manuals:
- Chamberlain manual, PDF page 40 for B980
- Chamberlain manual, PDF page 43 for the B4603T and 4 more models
Which models each manual covers
- Chamberlain manual for model B980
- Chamberlain manual for models B4603T, B4643T, B4613T, B6713T, B6753T
Not this one? Look up another Chamberlain code
Garage Door Science isn’t affiliated with the opener makers LiftMaster, Chamberlain or Genie. Each meaning is our summary of the maker’s own manual, which we link.
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