Chamberlain code 4-1 to 4-4
The door starts, then stops or reverses
Check this first, then a proThe opener felt the door bind, stick or hit something. The maker lists a broken spring and a door lock among the causes.
What to do: Clear anything in the door’s path and check it isn’t locked. If it still sticks, call a pro to check the springs and tracks. If the door itself is fine, the travel limits may need setting again, using your manual.
Don’t lift or force the door by hand: if a spring is broken, the door can fall. Springs and cables are a pro’s job. DASMA
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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