Sound familiar?Coverdale
- 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.
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
The sensors are only as good as the thin two-conductor wire that links them to the opener. It runs from the low-voltage terminals on the head unit along the ceiling and down each wall to the floor, stapled as it goes, and it is easily pierced, cut during renovations, chewed, or pulled loose at the terminals. When both sensor lights are dark, or the opener's code says the circuit is open or reversed, the technician tests the run end to end, repairs the damaged section or replaces the whole run, checks polarity at the terminals, and clips the new wire clear of the track.
Photo-Eye Sensor Alignment or Replacement · Coverdale
How the visit goes
Scene 1
Making sure it is the sensors and not the door
A door that reverses on the way down has two possible reasons, and only one of them lives at the floor. If the door touches something, including a bottom seal frozen to the slab, a travel limit set slightly long or a stiff door in cold weather, the force setting sends it back up. That looks like a sensor fault from the driveway but calls for a different fix. The technician checks whether the door reverses before it moves or after it meets resistance, watches the sensor lights during the cycle, and tries the door with the beam deliberately shaded. The answer decides whether the work stays with the sensors or moves to the settings.
Scene 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.
Scene 3
A record of the work
You have a short written note of what was done: the opener make and model, what the diagnostic code and the sensor lights showed on arrival, whether the fault was alignment, wiring, sun or a worn sensor, what was replaced and where the new parts sit. It records the height the sensors were set at and that both tests were passed with you watching. That note is useful for a home inspection, for the next technician, and for you, because it shows what normal looks like on this door so a future change is easy to describe over the phone.
In the van
- Wall or floor angle brackets
- Multimeter
- Track-mount sensor brackets
- Receiving-eye sun shade
- Protective wire channel
What shapes the quoteRice Lake Garage Door Repair Co.
- Opener make and generation
- Sensor pairs are matched to the opener family, and some models take a kit with brackets and wire while others take sensors alone. The head unit label sets which pair is needed and how it is priced.
- 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.
- 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
Homeowners ask
Is it all right to keep using the door until the visit?
Use the door in a way that keeps you in control. If the opener closes only while the wall button is held, do that only while you can see the whole doorway and nobody is near it. Otherwise close the door first if you can, then move it by hand with the manual release, and get help if it feels heavy or binds. Keep children and pets clear during any test. A door that reverses is being cautious on your behalf.
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.
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.
Openers & Access
- Chain-Drive Opener RepairThe door opens about a third of the way and stops.
- Belt-Drive Opener RepairThe belt looks fine from a distance, but up close the rubber has cracked across the back in dozens of places and, in one spot…
- Garage Door Opener ReplacementThe remotes only work from the end of the driveway now, and one of them disappeared with a set of keys last month.
- Garage Door Remote and Keypad ProgrammingThe outdoor keypad worked all summer.
- Smart Garage Controller SetupA smart hub arrived in the mail with a coin-cell sensor and two wires.
Coverdaleinformation
NorthumberlandOntario
Photo-Eye Sensor Alignment or Replacement · Cobourg, Alnwick/Haldimand, Brighton, Cramahe, Hamilton, Gosport, East Colborne, Norham, Codrington, Orland, Smithfield
- Town
- Coverdale, Northumberland
- In business
- 17 years
- Hours
- Open 24/7
- Nights, weekends and holidays, same fees
- Phone
- (289) 677-1944
- 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
- 58 in 100 homes · mixed housing
- About 52% of homes in Cobourg 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 58% of homes in Cobourg (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.
Nearby
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.
(289) 677-1944, open 24/7.