Blog · Kitchener

Garage door opener not working in Kitchener? Six checks to run before you call anyone

Most garage door openers that stop working in Kitchener have not failed; they are being told not to run by a locked wall button, a blocked or misaligned photo-eye, or a door that has become too heavy for them. Six checks you can do safely in ten minutes will sort out which, and the sixth tells you when the opener was never the problem.

Last updated October 24, 2026 · Reviewed by the Kitchener Garage Door Repair team

Why won't my garage door opener work?

Because something upstream of the motor is stopping it, or because the door itself is binding or unbalanced and the opener's safety features are refusing to force it. The symptoms point to the cause. An opener that does nothing at all is usually power, a lock button or a remote. One that hums and does not move has a stripped gear or a seized door. One that closes partway and goes back up is seeing a photo-eye interruption. One that moves a foot and reverses is hitting its force limit on a door that is binding or has weak springs. The checks below run in that order.

The six checks

1. Power. Confirm the opener is plugged into a live receptacle and the light on the motor housing comes on. If the receptacle is dead, check for a tripped breaker or a tripped GFCI elsewhere on the circuit; garage receptacles are often fed through a GFCI in another room. DASMA's checklist notes that an extension cord is not permitted for an opener, so if the unit is running on one, that is a separate thing to fix.
2. The lock button. Most wall controls have a lock or vacation setting that disables the remotes while the wall button still works. If the remotes have all stopped at once and the wall button works, this is it. Hold the lock button until the light stops flashing.
3. Remote and keypad batteries. Garaga notes that a remote battery can last up to about 12 months and that the 9-volt battery under the outdoor keypad cover is exposed to large temperature swings and should be changed yearly. Try the wall button; if it works and the remote does not, start with the battery before reprogramming anything.
4. The photo-eyes. The two sensors sit near the floor on each side of the opening, and DASMA says the beam should be no higher than six inches (about 150 millimetres) above the floor. Each has a small light. If one is off or flashing, the pair is misaligned, dirty, or a bin or shovel is in the beam. Clean the lenses, check that nothing is in the way, and gently adjust until both lights are steady. Garaga's troubleshooting guide says most abnormal blink patterns on an opener trace back to the photo-eye reversal system, including cut or stapled-through sensor wires.
5. The manual lift test. With the door fully closed, pull the red emergency release cord so the door is disconnected from the trolley, then lift it by hand. Garaga's own checklist describes this test: the door should move freely and stay put at about halfway. If it is hard to lift, slams down, or will not stay, the springs are weak or broken and the opener has been doing work it was never built for. Do not try to adjust the springs; reconnect nothing and call.
6. The blink codes. Many openers have up and down indicator arrows on the motor housing that flash a pattern when something is wrong. Garaga's guide decodes the common ones: patterns for disconnected or reversed sensor wires, for sensors out of alignment, for a door that binds and reverses after six to eight inches, and for a logic board that has failed. Count the flashes on each arrow and look the pattern up in your opener's manual before deciding it is dead.

What the result tells you

If the door lifted freely by hand and the opener still will not run after the first four checks, the fault is in the opener: a stripped gear and sprocket on a chain-drive unit, a failed capacitor, a logic board, a travel module, or sensors that need more than a nudge. If the door was heavy, crooked or slammed on the manual test, the opener was the victim, and the springs or cables and rollers come first. Replacing the opener without fixing the door burns out the new one the same way.

What not to do

• Do not turn the force setting up to stop the door reversing. The force limit is a safety feature, and the settings that would make a binding door close are the settings that would also close it on a child or a car. DASMA's checklist treats a failed reversal test as a reason to service or replace, not to adjust.
• Do not tape over, bypass or point the photo-eyes at each other to make the door close. DASMA says a residential opener made after 1992 must have inherent force sensing, and that one with no entrapment protection should be replaced rather than kept in service.
• Do not touch the springs, cables, drums or the brackets they attach to. They are under high tension.

When to call a pro

Call when the six checks point at the opener itself, when the manual test shows the door is heavy or crooked, or when the unit is old enough to have no photo-eyes at all. The technician we book for Kitchener starts the same way every time, by disconnecting the door and lifting it by hand, because an opener cannot be judged until the door it is attached to is known to be balanced. A worn gear, a capacitor or misaligned sensors on a sound unit are repaired; a unit that fails the DASMA reversal tests after adjustment, or needs a board that costs most of a new opener, is replaced with a current unit with battery backup, which matters in a Forest Heights or Stanley Park winter outage with the car inside. The opener repair and replacement page covers the choices between chain, belt and wall-mount units, the Kitchener garage door repair cost guide explains what moves the number, and you can describe the symptom and the opener's age to have the technician call back.

Sources

• Technical Data Sheet 167: Garage Door and Operator Inspection Checklist - DASMA
• Sick Garage Door Opener? Troubleshooting Help - Garaga
• Winterize Your Garage Door With This Handy Checklist - Garaga