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, London

Openers · London

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

Some sensor problems keep a schedule. A receiving eye that faces the low sun on winter mornings is flooded with light and loses the beam until the sun moves on, and a lens that frosts overnight in an unheated garage clears itself by noon. The service sorts these out for good: the sensors are swapped side to side so the receiver faces away from the light, or a small shade is fitted, and lenses and brackets are cleaned and reset above the line where slush collects. The door then closes at any hour of the day and in any month.

Sound familiar?London

The call
Someone backed the car in a little too far, a bin or a bicycle brushed the track, and since then the door starts to close and comes back up. One sensor now sits at a slightly different angle from the other.

NextHow the visit goes

Photo-Eye Sensor Alignment or Replacement · London

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.
  1. Scene 1

    Counting the opener's flashes

    The head unit has its own way of reporting a sensor problem. Many openers flash the light bulb a fixed number of times when close is pressed and the beam is not satisfied, and newer units blink a code on their up and down arrows that separates a blocked or misaligned beam from a cut wire, a disconnected pair or reversed wiring. The technician reads the model off the label, counts the pattern and matches it to the maker's chart. This is what keeps the visit efficient: a code that says the circuit is open sends the work to the wiring, while a code that says obstructed or misaligned sends it to the brackets.

  2. Scene 2

    Cleaning and protecting the lenses

    Lenses are wiped with a soft cloth and a mild cleaner, never scraped, and the housings are checked for cracks that let in water. Sensors that have been sitting in the strip where slush and salt collect are raised within the permitted height range and their brackets sealed. On a wall where the wire runs exposed, a slim protective channel keeps it clear of bins and bikes. Where mice have been at the wire, the new run is routed higher along the wall and dropped straight down to each sensor. These small measures are what keep a repair from repeating the following winter.

  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

Type of kit
Some replacement kits contain only the two sensors with connectors, while others include brackets and a full length of wire. The kit that suits the opener and the state of the existing hardware is what is quoted.
An opener without a sensor circuit
Where the operator predates monitored sensors and cannot accept a pair, the quote changes shape into a modern operator with its own sensors, which is discussed as a separate decision rather than folded in.
Bracket condition
A bracket that can be straightened costs little time. One that is cracked, rusted through or missing is replaced, and a change from track clips to wall or floor brackets adds anchors and mounting work.

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.

Londoninformation

MiddlesexOntario

Town
London, 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.Original openers in older neighbourhoods often predate photo-eye sensors and rolling-code remotes. Bringing one up to date means a quieter motor, sensors that stop the door for a child or pet, and remotes that cannot be copied from the driveway, all installed in a single visit.
  • Single-detached houses make up about 49% of homes in London (2021 Census).In mixed neighbourhoods, noise matters differently from one address to the next. A detached house with a bedroom above the garage and a townhouse with a neighbour through the wall both benefit from a belt-drive opener and nylon rollers, and we explain the difference either way.

Source: Statistics Canada, Census Profile

Open London 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.