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Inspect Safety Sensors for Indicator Lights — Test Safety Sensors

Beginner4 hours

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Garage Door Opener Repair · Step 7 of 13

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Locate the safety sensors, which are typically small, black boxes mounted on the garage door tracks near the floor. These sensors work in pairs, with one transmitting a beam and the other receiving it. Observe the indicator lights on both sensors. One sensor (transmitter) should display a solid red light, and the other (receiver) should display a solid green light. If any light is flashing or off, it indicates a problem, most commonly a misalignment or obstruction.

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Can I get DIY guidance for garage door opener repair?

Repairing a garage door opener, especially when it involves inspecting or working with the door's cables, rollers, or drive mechanisms, is classified as a high-risk structural project. Due to the significant safety hazards, including potential for severe injury or death from falling doors or tensioned components, it is strongly recommended to consult a licensed professional for all repairs.