Garage door service in Clark County, WA
Fix the safety sensors that keep your door from closing
We realign, rewire and replace garage door safety sensors on doors across Clark County and in Vancouver, Washington, then run the reversal test before we leave. Sunlight shining into a receiving lens is one of the first causes we rule out.
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Signs you need this repair
A sensor fault looks like an opener problem from the driveway, and these clues point at the photo eyes instead.
- The door starts down, then goes straight back up
- It refuses to close only while sun is shining on one of the eyes
- The opener light blinks when you press the remote to close
- The door only goes down while you hold the wall button
- One of the little sensor lights is off or flickering
- A bin, bike or mower bumped a bracket and the door has not closed right since
How a safety sensor visit runs
A sensor call is detective work, done in the order that turns up the cheap fix first.
Read the lights on both eyes
Each photo eye carries a small indicator light. The sending eye normally glows steady whenever it has power, and the receiving eye glows when it sees the beam, so a dark or blinking receiver points at misalignment, a dirty lens or a wiring fault. We note which eye is unhappy before touching anything, because that alone narrows the cause.
Clean, aim and tighten
Lenses get wiped of dust, cobwebs and the film a damp garage leaves behind. Then we point the pair dead at one another and snug the brackets so a nudge from a recycling bin does not knock them out again. The eyes stay at the low mounting height the opener maker specifies, so a child or a pet crossing the opening breaks the beam.
Trace the wire from eye to opener
If aiming does not bring the light on, the fault is usually in the thin wire. We follow it from each eye to the opener head, looking for a staple driven through it, a mower nick near the floor, a section chewed where mice nest in the wet months, or green corrosion at a terminal. A damaged stretch gets replaced with a fresh run rather than wrapped in tape.
Shade or swap an eye the sun reaches
Sunlight shining straight into the receiving eye can block the infrared beam from the sending eye, and the opener then acts as if something stands in the doorway. Trading the two eyes between sides is the first fix the maker gives. If the sun simply finds the receiver at another hour, a sun shield over it ends the problem without touching the opener at all.
Replace if needed, then prove it
Eyes that are truly dead get replaced with a pair the opener maker lists for that model, since sensors from different systems seldom speak the same signal. Then come the tests: a hand through the beam while the door is closing must send it back up, and so must a short length of two by four lying flat across the threshold.
Why every opener has photo eyes
Federal rules require entrapment protection on every residential opener manufactured for US sale on or after January 1, 1993, and makers almost always meet that rule with photo eyes near the floor.
Newer openers also monitor the eyes. If a sensor is missing, unplugged or faulty, a remote can no longer send the door down, and on many models it only closes while someone holds the wall button. That is a safety design, not a defect, and it is why a dead sensor makes the whole opener seem broken.
This is federal law under 16 CFR 1211, not a Washington rule, and it governs how openers are built. Bridging the sensor wires or taping the eyes to the ceiling removes the one thing that stops a closing door from coming down onto a toddler, a dog or the hood of a car.
Why Clark County garages are hard on photo eyes
Photo eyes in Clark County garages fail for a few plain reasons: damp air on the lenses, garages packed with cars and gear, and direct sun on a receiving lens.
Sun is the odd one. Chamberlain notes that sunlight shining into the receiving eye can block the beam from the sending eye, and that swapping the pair between sides may only move the glare from morning to evening. A door that balks only while sun reaches the eyes sends people hunting for an opener fault that is not there.
Damp is the slower problem. Pearson Field averages about 94 days a year with a tenth of an inch of rain or more, and lenses a few inches off a wet slab collect film and spider webs. Tract garages that hold two cars, the recycling bins and a mower supply the bumps that knock brackets out of line.
Four sensor checks you can do before you call
These take a couple of minutes, need no tools beyond a cloth, and sometimes save the visit entirely.
- Clean each lens with a dry, soft rag and clear anything in the beam, including a broom leaning against the track
- Look at each eye's light, and if one is off or blinking, turn its bracket gently by hand until the light glows steady
- Notice whether the trouble happens only while sun shines on the eyes, because then glare is the likely cause and a swap or a sun shield is the fix
- Follow the thin wire along the floor and up the track, looking for staples, cuts or chewing
What changes the price
Cleaning and realigning the eyes sits at the posted price, and parts and wire are what add to it.
- A new pair of photo eyes matched to the opener
- A fresh wire run from the eyes to the opener head, longer in a deep or three-car garage
- Wire routed through finished walls or around a door with no easy path
- Brackets replaced after a car, mower or bin bent them
- A wall control or logic board that turns out to share the fault, quoted first
When replacing beats repairing
A new opener beats sensor repair when fresh eyes test good but the opener still rejects them, or when matching sensors for an old model are no longer sold.
The eyes themselves are inexpensive, so on an older garage the real question is whether the opener behind them is worth keeping, and a new opener with its own eyes ends the chase for parts. We price that option next to the sensor repair so you can compare.
Safety sensor: questions and answers
How do I realign garage door safety sensors?
Loosen the wing nut or screw on the bracket, turn the eye until its indicator light glows steady, and tighten it again. Both eyes should point straight at each other at the same height. If the light will not settle, the lens is dirty, the bracket is bent or the wire has a fault, and that is when to call us.
Why won't my garage door close when the sun shines on the sensors?
Sunlight shining into the receiving eye can drown out the beam from the sending eye, so the opener refuses to close. Chamberlain gives two fixes: swap the eyes between sides, or fit a sun shield over the receiver when the swap only moves the glare to another time of day. Neither is an expensive repair.
How can a broken wire stop garage door safety sensors from working?
The eyes run on thin low-voltage wire, and one cut, crushed or corroded spot breaks the circuit, so the opener reads the eyes as missing. Staples through the wire, mower nicks and mouse damage are the usual culprits. We trace the full run and replace the damaged section instead of taping it.
Can I put any brand of safety sensor on my garage door opener?
Generally no, because photo eyes from one opener system seldom work with another; each maker's eyes send their own signal. We fit a pair the opener maker lists for your model. Some universal sensor kits exist, and we check them against the model number before suggesting one.
How do I test that my garage door reverses the way it should?
Lay a two by four flat on the floor in the door's path and close the door. It should reverse within two seconds of touching the board, and the federal standard calls for doing this monthly. Then pass something through the beam as the door comes down, and it should halt and rise again.
Why should garage door sensors never be bypassed to get the door closed?
Because the sensors are what stop a closing door from landing on a person, a pet or a car. Bridging the wires or mounting the eyes up high defeats a protection federal rules require on every opener made since 1993. If the eyes are failing, we repair or replace them and prove the fix with the reversal test.
Do garage door sensors need replacing after a car or bin knocks them?
Not always, since a knocked bracket often just needs straightening and a fresh aim. If the housing is cracked or the light stays dark after aiming, the eye gets replaced with a matched part. We also check the wire at the bracket, because a hard bump can pull it loose from the terminal.
Where to go next
Where we do this work
Sensor calls come from sunny driveways and crowded garages everywhere we work, and here are six of those places.
Want a price before anyone drives over?
Call and describe what the door is doing, or text a photo of the door and the spring above it. You hear the likely repair and where its price starts, then decide.