Skip to content
Brooklin Garage Door ServicesRequest a visit
Open 24/7(289) 278-1736Call now
Two detached black sensors with recessed lenses and coiled wires lie in a tray beside a mounting bracket. — Photo-Eye Sensor Alignment or Replacement, Whitby

Book soon Openers · Whitby

Photo-Eye Sensor Alignment or Replacement

On bright mornings the door will not close, then by lunchtime it behaves itself. The garage faces the low sun, and the light reaches straight across the floor to one of the little black sensors.

Call now · open 24/7(289) 278-1736

Request a visit

Right now

Before the door is looked at

Call (289) 278-1736, 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

Two small sensors face each other across the doorway: one sends an infrared beam, the other receives it. While the beam lands on the receiver, the opener will close the door; the moment anything interrupts it, the door stops and returns to open. Every sensor call comes down to why the receiver has lost the beam: an object, a bent bracket, a dirty or frosted lens, sun in the receiving eye, a broken wire or a tired sensor. The technician works through those in order, fixes the one that applies, and shows you the steady indicator lights that mean the pair is talking again.

Sound familiar?

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.

How the visit goes

Photo-Eye Sensor Alignment or Replacement · Whitby

How the visit goes

Dark wall-mounted box with a plug-in adapter and sensor beside a garage door, above a workbench with a drill and screws.
  1. 1

    Starting with the story

    The first minutes are spent listening. What does the door do when close is pressed: drop and bounce, stay put, or close only while the wall button is held? Does the opener light blink, and how many times? When did it start, and what changed around then: a car bumped the track, a storm, shelving went up, the garage was reorganised, the first frost arrived? Does it happen at all hours or only on bright mornings? Those answers usually point at one of a handful of causes before a single tool comes out, and they decide whether the technician heads for the brackets, the wire or the head unit first.

  2. 2

    Bringing the pair back to the doorway

    Sometimes the sensors exist but have been defeated: taped face to face next to the head unit so the circuit is always satisfied and the door closes on anything. The technician separates the pair, checks that both still work, and mounts them where they belong on each side of the opening, low to the floor and facing each other. New wire is run down each side, brackets are fitted, and the alignment is set. The opener is then made to prove itself with the beam test, and the household is shown why the pair matters and how to keep it working, so the shortcut is never tempting again.

  3. 3

    If it ever reverses again

    Should the door start bouncing back up in the future, you know the order to check. Look along the floor for anything in the beam. Look at the two sensor lights for a dark or flickering one. Look at whether the door backs up as soon as it starts or only after touching something, since the second points to the door's settings rather than the beam. Note whether the opener light is flashing and how many times. With those four facts the cause is usually obvious, and if a visit is needed, the technician arrives already knowing where to begin.

In the van

  • Multimeter
  • Receiving-eye sun shade
  • Insulated wire staples
  • Protective wire channel
  • Concrete anchors

What affects the quote

  1. 1

    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.

  2. 2

    Length and route of the wire run

    A damaged section near a sensor is a short repair. A fresh run from the motor to both sides of the doorway takes longer, more so where the wire is buried in a finished ceiling.

  3. 3

    Undoing an earlier shortcut

    Sensors taped together beside the motor, mismatched pairs from different generations or a bypassed circuit are put right first, which means new wire down each side and fresh brackets at the doorway.

Same fees day, night or weekend.

Have it ready

Before you call · 0 / 3

(289) 278-1736

Photo-Eye Sensor Alignment or Replacement: questions

Advice · (289) 278-1736

What happens during the visit, in order?

Questions first: what the door does, when it began, what changed. Then the beam path is cleared, the sensor lights are read, the opener's flash code is counted, and the brackets and heights are measured. If the signs point to the circuit, the wire is traced and tested with a meter. The cause is fixed, whether that is alignment, brackets, wire, a shade or a new pair, and the visit closes with the beam test and the contact reversal test.

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.

Why does my door start to close and then go straight back up?

Often the opener believes something is in the doorway, which happens when the receiving sensor stops seeing the beam, whether from an object in the path, a bracket knocked out of line, a dirty or frosted lens, sun in the receiving eye, or a damaged wire. Binding, a force setting or the door arm can cause the same symptom, so the sensor lights and the opener's flashing pattern are read first, and the technician fixes the cause they point to rather than guessing.

Photo-Eye Sensor Alignment or Replacement near you

Durham, Ontario

Whitby information

Town
Whitby, Durham, Ontario
In business
30 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

25%

Newer homes. About 25% of homes in Whitby were built in 1980 or earlier, according to the 2021 Census.

Where homes are newer, the garage is usually attached and often has living space over it, so the door forms part of the insulated envelope. Insulated panels, tight perimeter weatherstrip and a good bottom seal make a real difference to the comfort of the room above.

70%

Mostly houses. Single-detached houses make up about 70% of homes in Whitby (2021 Census).

Detached houses commonly have attached two-car garages with a wide double door, which is a heavy door on a pair of torsion springs. Spring and cable work on these doors is done as a matched set so the door lifts level and the opener carries only its intended load.

Source: Statistics Canada, 2021 Census of Population

Open Whitby in Google Maps

Open 24/7

Request a visit

On bright mornings the door will not close, then by lunchtime it behaves itself.

Call now · open 24/7(289) 278-1736
  • On-site assessment preferred
  • Same fees day, night or weekend
  • 30 years in business