Opener or sensor light blinking
A flashing opener light and a door that won’t close point to the safety sensors: blocked, dirty or out of line. Then a cut sensor wire or an opener fault.
What to do right now
- Step 1 Count how many times the opener light flashes, then write it down.
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Step 2 Find the small light on each sensor by the floor. Is one off or blinking? - Step 3 Give both lenses a wipe with a dry cloth, and move anything between them.
- Step 4 Still flashing? Call with the count and the brand on your opener’s label.
Likely causes
- Beam blocked A box, a leaf pile or a hanging tool sits between the two sensors.
- One sensor out of line Its light blinks or stays dark while the other one glows steady. from$199
- Cut or loose sensor wire Both sensor lights are dark even though the opener has power. from$199
- Opener fault code The light on the motor flashes a pattern even with the sensors fine. from$199
You’ll know the exact price at the door, before work begins.
When to call us
Call if the lenses are clean, nothing’s in the beam and the light still flashes, or if both sensor lights are dark. We pick up any day between 7 AM and 9 PM.
Common questions
Why is my garage door opener light blinking?
A flashing light after you try to close the door usually means the safety sensors can’t see each other. Wipe both lenses, clear the space between them and check each sensor’s light. If they look fine, count the flashes for the tech.
What do the lights on garage door sensors mean?
Each sensor has one small light. On one sensor it shows power, on the other it shows the beam is getting through. If that second light is off or flickering, the sensors don’t line up or something’s blocking them. Both dark points to a wire or power problem.