Garage door reverses or will not close (safety sensors)
Nearly always the photo-eye safety sensors: blocked, misaligned, sun-blinded or miswired. Sensors must be repaired, never bypassed. If sensors are fine, look at force/limits and door binding.
Before you start
- Never bypass, tape, or remove the safety sensors; they are required for safe closing.
- Keep people and pets out of the doorway while testing.
- Do not touch springs or cables.
Diagnostic steps
Unlock all 5 steps with expected values
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