How To Repair Garage Door Opener Sensor

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

How to repair garage door opener sensor.

If an object or person is in the way of the beam the closing door reverses direction. The main drive gear is the plastic gear that comes in direct contact with the worm drive gear on the motor. For the door to close correctly without reversing the safety sensors need to be aligned perfectly and there should be nothing in the way of the light beam. Use the stepladder to inspect the wires near the upper part of a wall and at the ceiling.

The garage door opener has two sensors that prevent the garage door from closing on a person or object. 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. A few minutes every six months or so will. 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.

Garage door opener won t open all the way fix. 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. Higher than that can miss many low lying objects including pets. Inspect the double strand insulated low voltage wires from each sensor to the back of the garage door opener.

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. 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. Proper height for a garage door sensor is 4 to 6 inches 10 2 to 15 2 cm.

Lower is easy to stand above with a foot on either side. Electric garage door openers are a great innovation but as is the case with every electric electronic component things can go bad and malfunction.