Garage Door Opener Troubleshooting: Work Through It in Order

Openers · Updated 2026-01-06 · Rite Lift Garage Doors

Most opener call-outs come down to four things: sensors, travel limits, a stripped gear, or a door problem the opener is being blamed for.

Start here: is it the opener or the door?

Pull the emergency release cord and lift the door by hand. If it is heavy, sticks, or will not move, the opener is innocent — you have a spring or track problem. Fixing the opener will not help, and running it will damage it further.

The door closes then reverses immediately

This is the sensors, nine times out of ten. Look at the two small units near the floor on either side of the opening. One steady light and one blinking usually means misalignment. Both dark means no power to them.

• Wipe both lenses — spiders and dust genuinely cause this
• Loosen the wing nut, aim them at each other, retighten
• Check the wire for staple damage where it runs along the wall

If the door reverses just before touching the floor rather than immediately, it is more likely the down-limit or down-force setting. Those are adjustment screws or buttons on the motor head, and getting them wrong makes the door unsafe, so it is worth having them set properly during an opener service.

The motor runs but the door does not move

Classic stripped drive gear. The plastic worm gear inside the motor head wears out, usually after years of fighting a slightly out-of-balance door. It is a repair, not a replacement — a gear kit and an hour of labour on most units.

The remote only works up close

• Replace the remote battery first
• Check the hanging antenna wire on the motor head is straight and undamaged
• Look for new sources of interference — LED bulbs in the opener are a very common culprit, as are new Wi-Fi devices
• Reprogram the remote to the unit

Swapping the opener's LED bulbs for ones rated as garage-door-opener safe fixes this surprisingly often.

Nothing happens at all

• Check the outlet with something else — GFCI outlets in garages trip regularly
• Check the breaker
• Check the wall control: if the wall button works and the remotes do not, the logic board is fine and it is a receiver or programming issue
• If the wall button also does nothing and there is power at the outlet, suspect the logic board

Repair or replace?

Under about ten years old with available parts, repair almost always wins. Past fifteen years, parts get scarce and you are also missing a decade of safety and convenience improvements — rolling code security, battery backup, quiet belt drive, phone control. At that point compare the repair against a new opener installation honestly, and pick on total cost over five years rather than today's invoice.