LiftMaster
Safety Sensor Blocked or Misaligned (No Code Displayed)
Garage door opener light flashes 10 times when trying to close; door does not move.
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Possible Causes
Object blocking sensor beam, misaligned photo eyes, loose wiring at sensors
How to Fix / Troubleshooting
Safety: Never bypass sensors permanently.
- Check for blockage: Remove any items near the bottom of the door that could block the beam.
- Align sensors: Adjust sensors until both LEDs are solid.
- Secure wiring: Tighten connections at sensors and opener terminals.
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Repair Difficulty
Very Easy
1/5
Required Part
Safety Sensors
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