Skip to content
Holland Marsh Garage Door Co.Request a visit
Open 24/7(289) 210-5126Call 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, Richmond Hill

Book soon Openers · Richmond Hill

Photo-Eye Sensor Alignment or Replacement

The small light on one of the sensors near the floor has gone dark, or it flickers when someone walks past the track. The other one glows steadily.

Call now · open 24/7(289) 210-5126

Request a visit

Right now

Before the door is looked at

Call (289) 210-5126, 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

Most sensor visits end in alignment rather than new parts. The brackets that hold the sensors ride on the door track or the wall, and they get bumped by bins, tires and shovels until the two lenses no longer look at each other. The technician resets both sensors to the same height, loosens the wing nuts, aims the pair until the receiving light holds steady, tightens everything and secures the wire. Replacement is the answer when a lens is crazed, a housing is cracked, water has got inside or the indicator stays dark with good wiring, and then a pair matched to the opener is fitted.

Sound familiar?

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.

How the visit goes

Photo-Eye Sensor Alignment or Replacement · Richmond Hill

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.
  1. 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. 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

  • Concrete anchors
  • Matched photo-eye sensor pair
  • Two-conductor low-voltage wire
  • Protective wire channel
  • Insulated wire staples

What affects the quote

  1. 1

    Force and travel adjustment alongside

    If the reversing turns out to involve a travel limit set long or a force setting made in summer, adjusting and re-testing those settings is included as a small extra step.

  2. 2

    Access to the doorway and the head unit

    A clear strip along the floor and a reachable head unit make for a direct job. Shelving, vehicles or stored goods that must be moved to reach the sensors, wire or terminals add time.

  3. 3

    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.

Same fees day, night or weekend.

Have it ready

Before you call · 0 / 3

(289) 210-5126

Photo-Eye Sensor Alignment or Replacement: questions

Advice · (289) 210-5126

Will the sensors need replacing or just aligning?

Most visits end in alignment, cleaning and bracket work, because the sensors themselves are hardy. Replacement comes into it when a lens has clouded or crazed, when the housing is split or holds water, an indicator stays dark with the wiring proven good, or the pair is from a different generation than the opener and is never recognised. The technician tests before choosing, so the parts list matches what the door needs.

Could the wiring be the problem rather than the sensors?

Frequently. The sensors are fed by a thin two-conductor wire from the head unit that crosses the ceiling and drops down both sides of the door, and it is pierced by staples, cut by shelving screws, chewed by mice or pulled from its terminals more often than a sensor fails. Both sensor lights dark, or an opener code for an open or reversed circuit, points to the wire. The technician tests the run with a meter and repairs or replaces the damaged section.

How high off the floor should the sensors sit?

Low. The industry checklist expects the beam no more than roughly 15 cm (6 in) up from the floor, so that a small child, a pet or a bicycle wheel breaks it. Both sensors are set at the same measured height and level with each other, since a difference of a couple of centimetres is enough to lose the beam. Within that rule the technician can raise them a little to keep them out of the strip where slush collects.

Photo-Eye Sensor Alignment or Replacement near you

York, Ontario

Richmond Hill information

Town
Richmond Hill, York, Ontario
In business
22 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

15%

Newer homes. About 15% of homes in Richmond Hill were built in 1980 or earlier, according to the 2021 Census.

Newer garages tend to have generous headroom and a finished ceiling, so options such as a jackshaft opener mounted beside the door, or a high-lift conversion for a car hoist, are practical. The technician checks the space and explains what would fit.

57%

A mix of homes. Single-detached houses make up about 57% of homes in Richmond Hill (2021 Census).

Where housing is varied, security needs vary too. A detached home wants its garage door closing fully and its interior door respected; a townhouse or condo wants old fobs and remotes cleared and the shared entrance working. We address whichever applies at each door.

Source: Statistics Canada, 2021 Census of Population

Open Richmond Hill in Google Maps

Open 24/7

Request a visit

The small light on one of the sensors near the floor has gone dark, or it flickers when someone walks past the track.

Call now · open 24/7(289) 210-5126
  • On-site assessment preferred
  • Same fees day, night or weekend
  • 22 years in business