The lights are back on, but the garage door will not open. This is one of the most common calls after a winter storm or a summer outage, and most of the time nothing is broken. The opener is still disconnected from the door, still has no power, or has forgotten its remotes.
Work through these in order. The first three cover most cases and take a few minutes.
1. The door is still disconnected from the opener
If you or someone in the house pulled the red emergency release cord during the outage, the door is no longer attached to the opener. The motor runs, the trolley moves along the rail, and the door stays where it is.
To reconnect it, close the door fully by hand, then pull the release cord toward the motor, or run the opener once. Most trolleys catch the door on the next cycle with a click. If it will not catch, or the door drags afterward, the trolley or the carriage may need a pro.
2. The opener has no power, even though the house does
Power coming back after an outage often trips a GFCI outlet, and garage outlets are commonly GFCI-protected. The opener may be plugged into a GFCI, or into an ordinary outlet fed from a GFCI somewhere else, such as a bathroom, the basement, or an outdoor outlet.
- Check whether the opener light comes on and whether the wall button lights up. If neither does, the opener has no power.
- Look for a GFCI outlet in the garage and press RESET. If there is none in the garage, check the bathrooms, basement, and outdoor outlets.
- Check the breaker panel for a tripped breaker. Reset it once.
- If a GFCI will not reset or a breaker trips again right away, stop there. That is the device doing its job. Anything behind an outlet cover or inside the panel is work for a licensed electrician.
3. The remotes or keypad forgot their pairing
Most openers keep their remote memory through an outage, but a surge when the power returns can wipe it. If the wall button works and the remotes and keypad do not, re-pair them. Press the learn button on the back of the opener, then press the remote button within about 30 seconds. The opener light blinks to confirm.
While you are at the wall console, check that lock or vacation mode is not on. If it is, the wall button still works and every remote is ignored.
4. The battery backup is drained
Openers with a battery backup run on that battery during the outage. After a long one, the battery can be fully drained. The opener may beep, run slowly, or refuse to run until it recharges, which can take a day or more. A battery that keeps beeping long after the power is back is usually worn out and due for replacement.
5. The door moves, then stops or reverses
If the door was opened or closed by hand during the outage, some openers lose track of where the door is and stop short or reverse. Check the safety sensors near the floor first. A blinking sensor light means the beam is blocked or a bracket got bumped, and realigning them is a safe fix. Never tape over, bypass, or disconnect the sensors to get the door to close. They are what keeps the door from coming down on a person or a car.
If the sensors are fine, the opener may need its travel limits set again. Many models explain this in the manual. If yours does not, or the door still reverses, leave it to a technician.
In cold weather, also look at the bottom of the door. An outage in a freeze lets the bottom seal freeze to the concrete, and the opener reads that as an obstruction.
6. Surge damage to the opener
If the opener has confirmed power, the reset steps are done, and it still does nothing, clicks without moving, or flickers its light, a surge may have damaged the logic board or the receiver. That is a pro repair. Do not open the motor housing yourself; there are live electrical parts inside.
If you notice a burning smell, smoke, or sparks from the opener or the outlet, turn off that circuit at the breaker if you can do it safely. If there is active smoke or fire, get everyone out and call 911.
Before you lift the door by hand
Sometimes the outage is a coincidence and the real problem is a broken spring. If the door feels very heavy, will not stay up when you let go partway, looks crooked, or you heard a loud bang from the garage, stop. Leave the door closed. Garage door springs, cables, and drums are under high tension, and repairing or adjusting them is pro-only work, every time.
What moves the price
Many post-outage problems need no repair at all. When something did fail, the price depends on which part: re-engaging a trolley or re-setting limits is on the smaller end, a new backup battery or receiver is in the middle, and a replacement logic board or a full new opener is more. The age of the opener matters too, because on an older unit a new opener can make more sense than a new board. You see a qualitative range up front, and the technician confirms the price in person after seeing the door.
Once it is working again, ask about a surge protector for the opener and a battery backup if you do not have one. Both make the next outage a non-event.
If the power is back and the door still will not work, describe the problem on rogerrepair.com and get one vetted local garage door pro booked.
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Common questions
Why is my garage door opener not working after a power outage?+
The most common reasons are that the door is still disconnected from the opener after someone pulled the emergency release, a GFCI outlet or breaker tripped when the power came back, or the remotes lost their pairing. Check those three first. If the opener has power and still does nothing, a surge may have damaged its logic board, which is a pro repair.
How do I reset my garage door opener after a power outage?+
Close the door fully, then reconnect the trolley by pulling the release cord toward the motor or running the opener once. Make sure the opener has power by resetting any tripped GFCI or breaker. If the remotes do not work, re-pair them with the learn button on the back of the opener.
Can a power surge break a garage door opener?+
Yes. A surge when the power returns can damage the logic board or the receiver. The usual sign is an opener with confirmed power that does nothing, clicks, or flickers. A technician can tell you whether a new board or a new opener makes more sense, and a surge protector helps prevent it next time.