Field notes · 2026-08-04

Garage door won't open? Run this checklist first

A door that won’t open has a short list of usual suspects, and you can rule most of them out from the garage floor without tools. Run this list top to bottom. It’s ordered from most common to least, tuned for the doors and winters this valley actually has.

1. Check the lock before anything else

Manual slide locks get bumped, and some openers have a “vacation lock” on the wall console that ignores every remote. If the wall button works but remotes don’t, hold the lock button on the console for a few seconds. Feel free to feel silly. This is the best possible outcome.

2. Is the opener getting power?

Look for the little light on the motor unit. Garages lose outlets to tripped GFCIs constantly, because the same circuit often feeds an outside receptacle that got snow-melt in it. Reset the GFCI (the button is usually on an outlet near the floor or in the laundry room) and try again.

3. Look at the red cord

If someone pulled the red release cord while moving boxes, or a broom handle bumped it, the trolley is disconnected and the motor runs without moving the door. With the door DOWN, pull the cord toward the door and run the opener. Most models re-latch automatically as the trolley passes.

4. Photo-eye sensors: the winter classic

The two little lenses six inches off the floor must see each other. Snow blown under the door, frost on a lens, a shovel leaned in the beam, or a bracket knocked out of line all stop a door, though usually that blocks closing rather than opening. Wipe both lenses, check that both indicator lights are solid, and gently re-aim if one blinks.

5. Frozen to the slab

After freezing rain or a meltwater refreeze, the bottom seal can bond to the concrete hard enough that the opener gives up. Don’t keep cycling it. That’s how drive gears strip. Break the bond by hand instead, either by lifting with the release cord pulled or by running a putty knife along the seal. A silicone spray on the rubber prevents the rematch.

6. Listen for what happened last

Did the door bang once loudly a day or a week ago? Look at the spring above the door. A healthy torsion spring is one continuous coil, and a broken one has a visible two-inch gap. If you see the gap, stop here.

7. The one thing you must not do

If you saw the gap, heard the bang, or the door feels like dead weight on the release cord, the spring is broken. Do not lift the door and do not keep running the opener. The counterbalance is gone and the door weighs 150 to 300 real pounds. That one is our job, usually a same-day one: spring repair in Grand Forks.

When the checklist comes up empty

If power, lock, cord, sensors, ice, and springs all check out and the door still won’t move, the fault is likely in the opener’s drive train or logic board. We can usually diagnose that over the phone in about two minutes if you describe what the unit does when you press the button: nothing, hums, clicks, or runs without the door moving. That call costs you nothing and usually saves a trip.