Protech Garage Doors repairs LiftMaster, Chamberlain and Genie openers across Ottawa, with the van sent from 46 Grenfell Crescent in Nepean and gear kits on it. The line is open 24 hours: (613) 845-9950. Most of the winter calls turn out not to be the opener at all, and the sections below are for telling the two apart before the van is on its way.
Read the motor head first
Take the light cover off the unit on the ceiling and look. A row of tiny switches inside the head, or no photo-eyes on the tracks at all, means the opener predates 1993. Chamberlain, which makes both the Chamberlain and LiftMaster brands, decided in 2008 to stop supporting the repair of every pre-1993 unit, dip-switch models included, and sells no parts for them. The honest answer on the phone for one of those is a new unit, and nobody will pretend a gear kit is coming. Anything with a model label from the last thirty years is a repair candidate, and the opener repair page lists what is worth doing on it.
The January call
January in Ottawa runs a mean daily minimum of minus 14.3 on Environment Canada's 1991 to 2020 normals for the airport, with the average coldest night at minus 26.8. Somewhere in that an opener that behaved all autumn starts stopping short of the floor, or lands and comes straight back up. The setting has not changed. The door has: the grease in the hinges and bearings thickens, the springs stiffen, and the opener reads the extra resistance as an obstruction and does what it was built to do. Chamberlain's support page is blunt about the wrong fix: never use force adjustments to compensate for a binding or sticking door. The repair in that case is to the door, a lubrication and a spring check through garage door repair, and the opener's setting stays where it is. Turning the force up buys a January and spends the safety reversal on it.
Photo-eyes, slush and low sun
The sensors sit near the floor, which in this city is where the car drips. Ottawa airport averages 59.2 cm of snow in January and 231.9 cm across the winter, and what comes off the car is slush carrying road salt, of which the City spreads about 185,000 tonnes a year on the figure its program manager for operational research gave in December 2021. The film that leaves on a lens dries white. When the light on the head blinks and the door will not close, a dry cloth across both lenses is the first thing to try. Frost does the same and clears itself once the garage warms; a door that closes at noon and refuses at seven in the morning is telling you that.
Sun is the other one. The noon sun in late December sits about 21 degrees above the horizon here, low enough to come through the open door and hit the receiving sensor, the one with the green LED on Chamberlain and LiftMaster units. The door opens, will not close, and the head blinks ten times. Chamberlain's fix is to swap the two sensors so the receiver sits on the shaded side, and it sells a sun shield, part 41B873, for a door where neither side is shaded. A door that only misbehaves at the same hour on bright days is this.
After the power comes back
When an opener does nothing after an outage, the opener repair page gives the order: outlet, breaker, wall button. Ottawa adds one step. 54 per cent of Hydro Ottawa customers lost power on 2022-05-21, and any door opened by the red cord that weekend has a trolley that may never have been re-engaged. If so, the motor runs and the door stays put, which looks exactly like a stripped gear and costs nothing to fix. Run the opener once; on most units the carriage picks the trolley up on the next cycle. If it does not, the cord pulls back toward the door until it clicks.
Getting the van, and what to say
Repairs are booked same day. Say the brand on the head, what its light is doing, whether the motor runs, and whether the door lifts by hand with the cord pulled. Those four answers decide what goes on the truck before it leaves Grenfell Crescent, and two of them decide whether it is the opener at all. (613) 845-9950, any hour. For a unit you already know is past saving, email info@protechgarage.ca and ask about a replacement instead.
Everything we do in Ottawa · Garage door opener repair: what the job involves
Everything else we repair and install
Every one below has a page of its own, written the same way this one was.

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Chain, belt, screw and wall-mount openers from LiftMaster, Chamberlain and Genie. How drive type and horsepower are chosen, and when an opener is worth repairing.
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Garage door opener installation
Sizing an opener to the weight of the door, rail length for 7 and 8 foot openings, the reinforcement strut, and the safety reverse test that finishes the job.
Learn moreAsked before booking garage door opener repair
Answered for Ottawa, on the number this branch answers.
How do I know if my opener is even repairable?
Take the light cover off and look at the motor head. A row of tiny switches inside it, or no photo-eyes on the tracks at all, means it predates 1993. Chamberlain, which makes both the Chamberlain and LiftMaster brands, decided in 2008 to stop supporting repair of every pre-1993 unit and sells no parts for them. Anything with a model label from the last thirty years is a repair candidate.
The door will not close and the head blinks ten times. What is it?
Usually the sun. The noon sun in late December sits about 21 degrees above the horizon here, low enough to come through the open door and hit the receiving sensor, the one with the green LED. Chamberlain fix is to swap the two sensors so the receiver sits on the shaded side, and it sells a sun shield, part 41B873, where neither side is shaded. A door that misbehaves only at the same hour on bright days is this.
It closes at noon and refuses at seven in the morning. Is that a fault?
That is frost on the lenses telling you about itself, and it clears once the garage warms. The sensors sit near the floor, which is where the car drips, and the city spreads about 185,000 tonnes of road salt a year, so the film that dries on a lens is white. A dry cloth across both lenses is the first thing to try before anybody books a van.
Talk to Protech Garage Doors today
Call (613) 845-9950 at any hour, or email info@protechgarage.ca for a new-door quote with no rush.
