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Hands holding a small wired device beside another mounted device and a tape measure at a garage-door opening — Photo-Eye Sensor Alignment or Replacement, King City

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Photo-Eye Sensor Alignment or Replacement in King City

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.

Call now · open 24/7(289) 907-1866

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Before the door is looked at

Call (289) 907-1866, open 24/7.

  1. Never bypass, tape over or relocate the sensors to make a door close; a door that reverses is reporting something worth fixing.

In plain words

By the end of the visit you have a door that closes from every control and reverses the instant the beam is broken, a sensor pair mounted level at the right height with steady indicator lights, wiring that is secured and out of harm's way, and a written note of what was found and what was changed. The technician walks you through the two tests you can repeat monthly, points out which light is which, and leaves the opener's diagnostic chart where you can find it. It is a small job that puts a large piece of your door's protection back in service.

Sound familiar?

After a cold night the door stays open until the garage warms up. There is frost on the sensor lenses and a ridge of salty slush piled against the brackets where the snow blower was parked.

How the visit goes

Photo-Eye Sensor Alignment or Replacement · King City

How the visit goes

Technician kneeling at a garage opening, pushing a black rubber seal into the metal jamb, with a red utility knife nearby. — King City
  1. 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. 2

    Dealing with the sun

    A receiver that looks into the low sun is fixed by geometry. The simplest cure is to swap the two sensors side to side so the receiver looks away from the doorway light and the sending eye, which is not affected, takes the sunny position. Where the layout rules that out, a small hood or shade is fitted over the receiving lens, deep enough to shield it without narrowing the beam path. The wiring is extended or re-routed as needed and both lights are checked at the time of day the fault used to appear, or with a strong light aimed at the lens to stand in for the sun.

  3. 3

    A door that closes from the driveway again

    The change you notice first is the ordinary one: you press the remote from the car, the door goes all the way down, and nobody has to stand in the garage holding a button. Behind that is a beam that is once more crossing the doorway at the right height, a pair of sensors that agree with each other, and an opener that is no longer flashing a warning every time you ask it to close. The door still stops and returns to open whenever the beam is broken, which is exactly what it should do, and now it does that only when something is genuinely in the way.

In the van

  • Protective wire channel
  • Wire connectors
  • Wall or floor angle brackets
  • Insulated wire staples
  • Track-mount sensor brackets

What affects the quote

  1. 1

    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.

  2. 2

    Corrosion reaching the head unit

    Where salt and water have travelled up the wire to the terminals, or the sensor terminals on the board are damaged, the repair extends beyond the pair and that is set out separately.

  3. 3

    Sun and reflection remedies

    Swapping the sensors side to side is a small addition when the wiring reaches. Fitting a shade, or extending the wire so the receiver can move, is a little more and is listed on its own.

Same fees day, night or weekend.

Have it ready

Before you call · 0 / 3

(289) 907-1866

Photo-Eye Sensor Alignment or Replacement: questions

Advice · (289) 907-1866

Could the door's force setting be the real reason it reverses?

Sometimes. The opener also backs up when it meets more resistance than its force setting allows: an iced seal, a limit that drives the door into the slab, rollers stiff with cold. From the driveway that looks identical to a beam problem. Timing is a clue, not proof, since a flickering beam can reverse the door partway and severe binding can trigger a force reversal right at the start; the sensor lights and diagnostic pattern settle which it is. The technician checks both so the right thing is fixed.

The door closes if I hold the wall button. Is that a fix?

It is a built-in stopgap, not a repair. When the sensor circuit is not satisfied, many openers allow a close from the wall control only while the button is held, on the idea that a person standing there can see the doorway. Newer units drop that behaviour altogether and simply hold the door open. Either way the door is telling you the beam has failed, and a sensor visit puts remote closing back.

Can the sensors be mounted on the wall instead of the track?

Track-mounted clips are the preferred, manufacturer-recommended arrangement. A wall-mounted angle bracket is the next choice where the track sits far back from the opening or the clip keeps getting bumped; mounting to the concrete floor is kept as a last resort, used only when the sensor's own instructions allow it. The same rules apply: both sensors at a matched height no higher than about 15 cm, level, facing each other, with the wire secured. Wall mounting sometimes gives a cleaner beam line on older doors with unusual track layouts.

York, Ontario

King City information

Town
King City, York, Ontario
In business
27 years
Hours
Open 24/7 · nights, weekends and holidays, same fees
Visits
On-site assessment preferred. Request a visit or call.

What the census means at the door

38%

Homes of every age. About 38% of homes in King were built in 1980 or earlier, according to the 2021 Census.

A mixed-age neighbourhood is where retrofits are most common: safety cables added to extension springs, a torsion conversion on an older door, insulated panels replacing a hollow door, or a quieter belt opener under a newly finished room above the garage. Each is a routine job for us.

87%

Mostly houses. Single-detached houses make up about 87% of homes in King (2021 Census).

Households in detached homes often have several remotes, a keypad and a phone app between family members and their cars. We keep all of them programmed to the opener, replace the ones that have failed, and explain how to add a new one when a car changes hands.

Source: Statistics Canada, 2021 Census of Population

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Request a visit

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

Call now · open 24/7(289) 907-1866
  • On-site assessment preferred
  • Same fees day, night or weekend
  • 27 years in business