If your garage door will not close, or it starts down and then reverses, the safety sensors are the most likely cause. In Edmonton, most sensor problems are fixed in one visit: we clean and realign the sensors, repair or replace damaged wire, or replace the pair if a unit has failed. A service call and diagnosis typically costs $90 to $130 plus GST, and we give you the full price before we start. Call 780-908-0907 and we will book you in. We are open 24 hours a day, 7 days a week.
Do not bypass, tape over or disconnect the sensors to get the door to close. They are the part that stops the door from closing on a child, a pet or a vehicle. Holding the wall button down also overrides them, so do not make that a daily habit. If a sensor problem leaves your door open at night, call us and we will secure it.
What Garage Door Sensors Do
Two small sensors sit on either side of the door, about 15 cm (6 inches) above the floor. One sends an invisible infrared beam and the other receives it. If something breaks the beam while the door is closing, the door stops and goes back up.
Openers sold in North America since 1993 are required to have this protection. When the sensors do not see each other, the opener assumes something is in the way and refuses to close. That is why a dirty, bumped or broken sensor can stop a perfectly healthy door.
Signs Your Garage Door Sensors Need Repair
Each sensor has a small indicator light. The lights tell you a lot before anyone touches a tool.
| What you see | What it usually means |
|---|---|
| The door starts to close, then reverses | The beam is blocked, dirty or misaligned |
| The door will not close and the opener lights flash | The opener cannot see the beam (many openers flash the lights 10 times) |
| One sensor light is steady and the other blinks or is dim | The sensors are out of line, or something is blocking the lens |
| One or both lights are off | No power to the sensor, a broken wire or a failed unit |
| Both lights are steady, but the door still reverses | An intermittent wire fault, sun glare or a problem at the opener |
| The door closes only while you hold the wall button | The sensors are not working and the opener is running without protection |
| The lights work in the morning and fail in the afternoon | Low sun shining into the receiving sensor |
A door that reverses when it touches the floor, with the sensors working normally, is a different problem. It points to the opener’s close setting, not the sensors. See our garage door opener service.
Three Checks Before You Call
These take about five minutes and need no tools:
- Look for a blockage. Clear anything in the path of the beam, such as a bin, a bag or a piece of ice.
- Wipe both lenses. Use a soft, dry cloth. In winter, frost and condensation can block the beam.
- Check the two lights. Both should be steady. A light that is off or flickering points to a power or wiring problem.
If a light is still off or blinking after that, stop there. Pushing a bracket around without knowing why can make the problem worse. Our guides on how to fix a garage door sensor and why your garage door won’t close cover the home checks in more detail.
Why Garage Door Sensors Fail in Edmonton
- A bump knocks them out of line. A bin, a bike, a snow shovel or a car mirror is all it takes. Even a small shift of the bracket can break the beam.
- Frost and snow block the lens. Condensation freezes on the lens during a cold snap and the beam cannot pass.
- Cold makes wire brittle. Old sensor wire cracks at the staples or at the opener end after years of freeze and thaw.
- Low winter sun confuses the receiver. In the morning or late afternoon, direct sun can shine into one sensor and blind it.
- Vibration loosens the wiring. Every time the door runs, the wire and brackets shake a little. Over time a connection works loose.
- Sensors wear out. The electronics inside can fail after 10 to 15 years.
- Mice chew the wire. A garage with stored items is a good home for them.
- Mismatched parts. Sensors from a different opener, or a replacement pair with the wrong wiring, may not work with your opener.
Repair or Replace? How We Decide
| Situation | What we usually do |
|---|---|
| Sensors are dirty or slightly out of line | Clean and realign, then test |
| A bracket is bent or loose | Straighten or replace the bracket and realign |
| Wire is cut, chewed or loose at a connection | Repair the wire, or run new wire if it is damaged in several places |
| One light stays off with good wire | Replace the sensor pair (we replace both so they match) |
| Sensors are more than 10 to 15 years old and acting up | Replace the pair |
| Sensors are fine but the door still will not close | Check the opener, the limit and force settings, and the door itself |
If the opener is old and the sensors are the third thing to fail, we tell you honestly if a new opener is the better value. See our garage door opener installation.
How We Repair Garage Door Sensors
- Check the lights and the opener. We read the sensor lights and any error flashes on the opener.
- Inspect the sensors and brackets. We look for damage, loose mounting and anything that moves.
- Test the wiring. We follow the wire from each sensor to the opener and test for breaks and loose connections.
- Fix or replace. We clean and realign, repair the wire or replace the pair, whatever the test shows.
- Test the safety reverse. We run the door with the sensors, break the beam while it closes and confirm it reverses every time. We also check that the door reverses when it meets an object on the floor.
- Check the rest of the door. A sensor fault can hide a balance or opener issue. We look at both before we leave.
Garage Door Sensor Repair Cost in Edmonton
Prices below are typical for Edmonton. We confirm the exact amount before we start, and it never changes without your approval.
| Service | Typical price (plus GST) |
|---|---|
| Service call and diagnosis | $90 to $130 |
| Sensor cleaning and realignment | $90 to $150 |
| Sensor wire repair | $120 to $220 |
| Sensor pair replacement, parts and labour | $150 to $280 |
The final price depends on the opener brand, the length and condition of the wire and whether the opener needs more than the sensors. After-hours visits are priced when you call.
What Not to Do
- Do not bypass the sensors. Never jumper, tape or disconnect them. Without them, the door has no protection from closing on a person or a pet.
- Do not hold the wall button as a fix. The door closes, but with no protection. Use it only to close the door once and then call us.
- Do not point the sensors at the sun. If sun glare is the cause, we can shade the sensors or move them.
- Do not mix sensors from different openers. The wiring and the signal often do not match.
- Do not splice wire with tape. A taped joint corrodes and fails in a few months. We use proper connectors.
What If the Door Is Stuck Open at Night?
A garage door that will not close leaves your home and your vehicles open. If you cannot close it safely, call us and we will secure it. See our emergency garage door repair or our same-day garage door repair service.
Prevent Sensor Problems This Winter
- Wipe the lenses once a month, and after heavy frost or blowing snow.
- Keep bins and tools away from the beam path.
- Clear snow from around the sensors, not just the driveway.
- Tell anyone who parks or shovels near the door where the sensors are.
- Add a sensor check to your yearly garage door maintenance.
Commercial Door Sensors and Photo Eyes
Commercial overhead doors use photo eyes and sometimes safety edges. Warehouses and loading areas have forklifts, dust and vibration that knock them out of line. We repair and replace them on commercial doors in Edmonton and Nisku. See our commercial overhead door service and our commercial overhead door opener service.
Garage Door Sensor Repair Across the Edmonton Region
We repair garage door sensors in Edmonton, St. Albert, Sherwood Park, Spruce Grove, Leduc, Beaumont, Nisku and Fort Saskatchewan.
Why Edmonton Homeowners Call Fix in Budget
- We find the cause. We test the wire and the opener, not just swap parts.
- Price before work. You approve the cost first.
- Safety first. We never bypass sensors, and we test the reverse before we leave.
- Local team. We work out of Chappelle Rd. SW and know what a cold snap does to sensors.
- Residential and commercial. One call covers a house door or a warehouse door.
- Open 24/7. If your door will not close, we can help at any hour.
Garage Door Sensor Repair FAQs
How much does garage door sensor repair cost in Edmonton?
A service call and diagnosis typically costs $90 to $130 plus GST. Cleaning and realigning the sensors typically costs $90 to $150, a wire repair $120 to $220 and a replacement pair $150 to $280, parts and labour. We confirm the price before we start.
Why won’t my garage door close?
The most common cause is the safety sensors. If the beam between them is blocked, dirty or out of line, the opener will not close the door. Check that both sensor lights are steady, wipe the lenses and clear the path. If a light is off or still blinking, call us.
What do the blinking lights on my garage door sensors mean?
A blinking light on a sensor usually means the beam is blocked or the sensors are out of line. A light that is off means no power or a broken wire. Many openers also flash their lights 10 times when they cannot see the beam.
Can I close my garage door without the sensors?
You can close it by holding the wall button, but the door has no protection while you do. That is a short-term way to close the door, not a repair. Call us the same day and do not tape or disconnect the sensors.
Why do my garage door sensors stop working in winter?
Frost and condensation can block the lens, and cold makes old wire brittle so it breaks or loses contact. Low winter sun can also shine into the receiving sensor. We clean and realign the sensors, repair the wire or replace the pair.
Do I need to replace both garage door sensors?
Yes, we replace both together. The pair work as a set, and a new sensor paired with an old one that is close to failing often gives problems again within months.
How long do garage door sensors last?
Most last 10 to 15 years. Dirt, damage to the wire and repeated bumps can shorten that.
Are garage door sensors required by law?
Garage door openers sold in North America since 1993 must have an entrapment protection system, and in most homes that means photo eye sensors. Removing or disabling them can also leave you with a safety risk and an insurance question.
Call Fix in Budget for Garage Door Sensor Repair in Edmonton
If your door will not close or keeps reversing, call us and we will find out why. Call 780-908-0907 or request a quote. We are open 24 hours a day, 7 days a week.
