Electric garage doors that open on their own aren’t haunted. It is usually a mechanical setting failure.
Force Settings
Motors have built-in force limits. If the door hits a stiff hinge or grit in the tracks, the motor thinks it’s hitting a car.
The safety override kicks in and sends the door back up halfway. If your tracks are dirty, the door won’t stay down.
The Photocell Gap
Photocells are the infrared beams at the bottom of the track.
If these sensors get knocked by a few millimetres, the beam breaks. The door refuses to close because it thinks something is in the way. Most “ghost” issues are just dirty lenses or a bent bracket.
Signal Hijacking
Old “fixed code” remotes are unsecure.
They use one signal. If a neighbor uses a similar car fob or garage remote nearby, it can trigger your motor.
Modern “Rolling Code” tech is the only fix. It swaps the signal every time you click the button so other remotes can’t interfere with your frequency.
The Safety Edge
Any door used by a family needs a “Safety Edge.”
This is a rubber strip that kills the power the second it touches an object. Without it, the door is a crush hazard.
Stop the Malfunction
A door that moves on its own is a sign the safety systems are out of whack.
Come down to 78 Alma Road or give us a call on 01202 533126. We have the rolling-code motors and safety edge kits on the bench. We can show you how to align your sensors properly.
