Problem: Garage door opener automatically reverses as soon as it closes, with no obstruction in its path.
Background: All garage door openers must have a reversing mechanism. If your opener doesn’t have one, replace it. If the opener reverses and refuses to keep the door closed, the “sensitivity,” “open,” or “close” knobs may be out of adjustment. Important: This safety feature should be tested regularly so the opener closes the door, but does not exert dangerous force which could lead to serious injury or death.
What to do: First set the “close” knob so the door makes full contact with the floor. To test the sensitivity adjustment, open the door and place a 1-inch thick piece of wood flat on the floor in the door’s path at about the center of the door. If you don’t have a piece of wood 1-inch thick, use a 2×4. The door should reverse and open the door when it strikes the wood. To test the force of the opener, repeat the test with a corrugated carton under the center of the door. The opener should reverse the door when it contacts the carton without crushing it. If, after experimenting with adjustments, the opener doesn’t reverse readily, have it re paired or replaced.
Special advice: The sensitivity knob should be adjusted, beginning at the minimum pressure setting, so that the door will close without reversing. The door should reverse within 2 seconds after hitting an obstruction. Should the sensitivity need to be raised to maximum pressure set ting, do not use the opener and have the system checked by a technician for problems such as worn tracks or broken springs.
Helpful hint: Discuss garage-door safety with children. Explain the danger of being trapped under the door, and do not let them play with or use the transmitter or push-button switch. Teach them never to play under or near an open garage door. The push button should be at least 5 feet from the floor so it is out of children’s reach. Always keep the door in sight until it completely closes.
Problem: The automatic opener does not open the garage door.
Background: An electronic garage door opener may not activate be cause its power supply is interrupted, its antenna is out of position, its transmitter is defective, its remote battery is expired, or its push-button switch inside the garage is defective. First make sure the unit’s receptacle inside the garage is receiving power, and that the opener is plugged in.
What to do: To determine if the transmitter or its battery is bad, simply see if the opener operates when the push button inside the garage is activated. If it works with the push button, next check to see that the unit’s antenna is not bent out of position. Try replacing the transmitter’s battery. If the transmitter still doesn’t work, its button may be defective. Try cleaning it with electrical contact cleaner. If that doesn’t correct the problem, you will most likely need to replace it. Conversely, if the transmitter works but the push button inside the garage doesn’t, turn off the power and clean the push button with electrical contact cleaner. If that doesn’t fix it, turn off all power and replace the switch simply by removing and detaching the 2 wires that are under the screws on the back, and reinstalling a new switch.
Special advice: When a power failure traps your car inside the garage, pull the emergency release mechanism located on the opener track. Usually, this will be a cord hanging down between the opener motor and the door. Pull the disconnect cord down and away from the door to release it. Important: If you disengage the emergency release during a power failure, be sure to also unplug the garage door opener. After the power is back on, pull on the emergency re lease again to re-engage the opener. Make sure all drivers in your house hold know how to use the emergency release mechanism.
Helpful hint: For routine adjustments, and consult the opener owner’s manual. If you don’t have an owner’s manual, contact the manufacturer and request a copy for your specific model. The opener model number should be on the back of the power unit.