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Garage Door Will Not Open? A Quick Troubleshooting Guide

A practical guide from the MS Facility Solutions team.

Short answer: A garage door that will not open usually traces to one of five things: no power at the opener, dead remote batteries, a pulled emergency-release cord, blocked or misaligned photo-eye sensors, or a broken spring or cable. Check the first four yourself. A crooked or unusually heavy door points to spring or cable failure, so stop and call a technician.

Before you assume the worst, a door that will not open often has a simple cause. Start with the basics and work up.

Check the opener for power, and confirm the remote batteries are fresh. Look for a pulled red emergency-release cord, which disconnects the door from the opener. Inspect the photo-eye sensors near the floor, if they are misaligned or blocked, many openers refuse to operate.

If the door is crooked, heavy, or you see a gap in a spring, stop, those point to a spring or cable problem that needs a technician. When in doubt, call and we will diagnose it safely.

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Common questions

Common questions

Why won't my garage door open with the remote when the wall button works?

That points to the remote, not the door. Replace the remote battery first, then reprogram it to the opener using the learn button on the motor unit. If the wall button works and every remote fails, the opener's antenna or radio receiver may be damaged and needs a technician.

My garage door opener runs but the door doesn't move. What's wrong?

The door has been disconnected from the opener, usually by the red emergency-release cord. Pull the door fully closed by hand, then reconnect by pulling the cord toward the motor or running the opener until the carriage re-latches. If the trolley is stripped or the chain hangs slack, that needs repair.

Why does my garage door start to close and then reverse back up?

Almost always the photo-eye safety sensors. They sit a few inches above the floor on both sides of the opening and must face each other with an unbroken beam. Wipe the lenses, clear anything in the path, and check that both indicator lights glow steadily rather than blinking.

Is it safe to force a garage door open when it is stuck?

No. If the door feels heavy, sits crooked, or shows a gap in the spring coils above it, the counterbalance system has failed and the door's full weight is unsupported. Forcing it can drop the door or strip the opener. Leave it in place and call a technician at (855) 557-5454.

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