How To Fix A Garage Door Opener Sensor

This diy repair guide explains how to replace a safety sensor on a garage door opener.

How to fix a garage door opener sensor.

Disconnect the power cord from the outlet at the ceiling you will have to use a stepladder. Use the stepladder to inspect the wires near the upper part of a wall and at the ceiling. One that sends an infrared beam and one that receives the beam. To prevent the garage door from injuring someone in the door or damaging an item in the way of the door all models of liftmaster garage door openers come installed with a safety sensor.

A few minutes every six months or so will. If an object or person is in the way of the beam the closing door reverses direction. If your garage door sensors are outside of this range remove them entirely from the garage door frame and install leveled inside the safe zone. The main drive gear is the plastic gear that comes in direct contact with the worm drive gear on the motor.

An incorrectly adjusted garage door opener and sensor can cause damage to the garage door motor lift mechanism your house or worse a person or pet. The sensors that make garage doors safer must be located in the worst possible place close to the floor. Lower is easy to stand above with a foot on either side. Replace the main gear drive if the garage door opener makes a grinding noise but the door doesn t move your main drive gear is probably toast.

The sensors are connected to the garage door opener with the help of low voltage wiring. Proper height for a garage door sensor is 4 to 6 inches 10 2 to 15 2 cm. Sometimes the sensor may be beyond repair due to wear and tear and in such a case your best bet is to replace the garage door sensor with a new one. Inspect the double strand insulated low voltage wires from each sensor to the back of the garage door opener.

If the green or red power indicator lights on the sensors are not illuminated you need to check the wiring. Garage door opener won t open all the way fix. This is something to consider if you decide. Electric garage door openers are a great innovation but as is the case with every electric electronic component things can go bad and malfunction.

Higher than that can miss many low lying objects including pets.