Skip to content
BroughdaleGarage Door SpecialistsOpen 24/7 (226) 781-8703
Technician kneeling beside a white paneled garage door, holding a small black box with a green light against the vertical track. — Photo-Eye Sensor Alignment or Replacement, Stoneybrook

Openers · Stoneybrook

Photo-Eye Sensor Alignment or Replacement

The door will only go down while a finger stays on the wall button; let go and it stops or reverses. From the remote it opens fine but never closes, so someone has to stand in the garage every time.

In plain words

Your opener has been trying to tell you what is wrong. The head unit flashes its light a set number of times, or blinks a pattern on its up and down arrows, and each pattern maps to a cause on the maker's chart: beam blocked or misaligned, wire cut or disconnected, wires reversed or shorted. Down at the floor, many sensor pairs carry an indicator on each side, though some older pairs light only the receiver; check that model's chart, since a receiving light going out or flickering usually points to alignment. The technician reads both sets of signals first, which is why the repair usually takes one visit.

Sound familiar?Stoneybrook

The call
Since shelving went up along the garage wall, the door will not close and both sensor lights are dead. A screw or staple may have gone through the thin wire that runs from the opener to the sensors.

NextHow the visit goes

Photo-Eye Sensor Alignment or Replacement · Stoneybrook

How the visit goes

Hands driving a screw with a yellow cordless impact driver into a perforated steel track beside a white garage door panel. — Stoneybrook
  1. Scene 1

    Ruling out sun, frost and reflections

    A sensor that misbehaves on a timetable is usually being blinded rather than broken. The technician notes which way the door faces, where the low sun reaches the floor in the morning and late afternoon, and whether a receiving lens looks into that light or into a reflection off a parked car, a white wall or fresh snow. Lenses are checked for frost, condensation and a film of salt, common in an unheated garage. A hand cupped over the receiving eye while the light is watched is a simple test: if the indicator settles when the eye is shaded, the fix is a side swap or a small hood rather than new parts.

  2. Scene 2

    Proving it with the two tests

    No sensor job is finished on a steady light alone. The door is closed from the wall control and from a remote, and while it is on its way down an object is passed through the beam; the door must stop and return to fully open. Then a 2x4 is laid flat on the floor under the centre of the door and the door is closed onto it; it must reverse on contact. Both are repeated, the opener's diagnostic light is confirmed clear, and any app or hub reporting a sensor code is refreshed. The customer watches the tests so the normal behaviour is seen, not described.

  3. Scene 3

    The monthly beam test

    The habit worth keeping takes about a minute. Once a month, with the door open, press close on the wall control and, as it moves down, pass a broom handle through the beam near the floor. The door should stop and climb back to fully open. Then lay a 2x4 flat under the middle of the door and close onto it; the door should touch it and reverse. If either test fails, stop using the opener; close the door first if it is not already closed, then use the manual release, and get help moving it by hand if it feels heavy or will not hold. A door that passes both tests is doing its job.

In the van

  • Wall or floor angle brackets
  • Protective wire channel
  • Matched photo-eye sensor pair
  • Wing nuts and carriage bolts
  • Track-mount sensor brackets

What shapes the quoteBroughdale Garage Door Specialists

Protecting exposed wire
On a wall where the wire runs in the open, a slim protective channel or a re-route higher along the wall keeps bins, bikes and mice away from it, and is quoted as its own line.
Door-side findings
A balance problem, a stiff roller or a bottom seal that needs replacing sometimes shows up during testing. Those belong to their own service and are noted and quoted separately rather than hidden in the sensor work.
Number of doors
Each opener has its own sensor pair and wire run, so a double garage with two doors is two sets of checks, two possible pairs and two rounds of testing, quoted per door.

FeesSame any hour

Have it ready

Before you call · 0 / 3

(226) 781-8703

Homeowners ask

Do I need to be home for the work?

It helps. The technician needs access to the garage and the head unit, and the visit ends with a demonstration of the sensor lights and the two tests so you know what normal looks like. If you cannot be there, an adult who can open the garage is enough, and the written note left afterwards records what was found and changed. Having the strip of floor beside the door clear before arrival saves time either way.

How long does a sensor visit take?

Alignment, cleaning and a bracket adjustment are done inside an hour on most doors, including the two tests at the end. Replacing the pair adds a little for wiring and setup. Re-running the wire all the way from the motor to both sensors is the part that stretches a visit, especially where the wire is behind a finished ceiling or the garage is full. Having the floor by the door clear before arrival helps.

Will my phone app or hub still work after the sensors are changed?

Yes. The sensors are wired to the head unit, and the app or hub simply talks to that unit, so nothing about the connection changes. What you will notice is the fault code clearing: apps that reported the sensors as obstructed or not aligned show the door as ready to close again. If an app or hub still holds an old code after the work, refreshing it or cycling the door from the app once clears it.

Stoneybrookinformation

MiddlesexOntario

Town
Stoneybrook, Middlesex
In business
31 years
Hours
Open 24/7
Nights, weekends and holidays, same fees
Visits
On-site assessment preferred. Request a visit or call.

2021 census: what it means at the door

Every square is one home in a hundred.

  • 52 in 100 homes · older homes
  • About 52% of homes in London were built in 1980 or earlier, according to the 2021 Census.Older garages are frequently used as workshops or storage as much as parking, which means the door opens many times a day and collects dust on the sensors. Sealed rollers, protected photo-eyes and a tune-up schedule suit that pattern well.
  • Single-detached houses make up about 49% of homes in London (2021 Census).A mixed neighbourhood is where weatherproofing varies most. A detached garage with an old, uneven apron needs a thicker bottom seal; a newer townhouse door mostly needs a cracked section of seal replaced. We look at how each door meets its floor and fit what closes the gap.

Source: Statistics Canada, Census Profile

Open Stoneybrook in Google Maps

On-site assessment

Request a visit.

The door will only go down while a finger stays on the wall button; let go and it stops or reverses.

(226) 781-8703, open 24/7.