What does the flashing LED next to the learn button mean? Your garage door opener is programmed with self-diagnostic capabilities. The diagnostic LED next to the learn button will flash a number of times, then pause before repeating, signifying it has found a potential issue. The Diagnostic Chart is below. 1 or 2 Flashes - One or both of the LEDs on the safety reversing sensors do not glow steadily. One flash means there is a broken or disconnected wire to a safety reversing sensor. Two flashes means a wire to a sensor is shorted out or a black/white wire is reversed. Inspect the sensor wires for a short (staple in a wire), incorrect wiring polarity (black/white wires reversed), broken or disconnected wires; replace or reattach as needed. 3 Flashes - The LED is not lit on the door control. Inspect the door control wires for a short (staple in wire), and replace as needed. Disconnect wires at the door control, then touch the wires together. If the garage door opener activates, replace the door control.
If the garage door opener does not activate, disconnect door control wires from the motor unit. Momentarily short across the red and white terminals with jumper wire. If the garage door opener activates, replace the door control wires. 4 Flashes - The safety reversing sensor sending LED glows steadily, and the receiving light is dim or flashing. The safety reversing sensors are slightly misaligned. Loosen the wing nut on the receiving sensor, clean the lens, realign the sensor until it glows steadily, then tighten the wing nut and secure the brackets. Verify the door track is firmly secured to the wall and does not move. 5 Flashes - This is a miscellaneous code. Additional symptoms will help to identify the issue. If the opener is not moving at all and you hear a short hum, look for a physical obstruction and remove it, or check if the trolley is stuck on the stop bolt. See How do I get the trolley off the stop bolt?. If the door is moving more than 6-8 inches it is likely that a force adjustment is needed.
See Adjust the travel and force limits or Program the travel and force limits. If the garage door opener does not operate, the motor could be overheated. Wait 30 minutes and retry. If the garage door opener still does not operate it may be the logic board or a short in the door control wires. See How to troubleshoot a Door Control Panel 6 Flashes - Motor Circuit Failure. Replace the receiver logic board. What do the flashing UP and DOWN arrows mean? Answers others found helpful Why do the lights on my garage door opener flash and my door will not close? How to troubleshoot a door control panel How do I get the trolley off the stop bolt or stop tab? How to test or troubleshoot the safety reversing sensors How to align safety reversing sensorsThe garage door opener is equipped with two safety features that may prevent the door from closing and cause the lights to flash. The Lock Button on the Door Control The lock button on the door control may be activated.
Press the button to turn this feature off. The light bulb will blink two times. This feature is designed to prompt you that the lock button is activated. When the lock button is ON the garage door opener will work from the door control but the remote controls are locked out. The most common reason for the lights to flash on the garage door opener and the door not closing is that the safety reversing sensors are misaligned or obstructed; this is a safety feature of the garage door opener. Click here for instructions for aliging the safety sensors. When properly connected and aligned, the sensor will detect an obstacle in the path of its electronic beam. If an obstruction breaks the light beam while the door is closing, the door will stop and reverse to full open position, and the opener lights will flash 10 times. Your garage door opener is equipped with a Self Diagnostic feature to help you determine what the issue is. Based on the model of your garage door opener, your garage door opener will flash an LED next to your learn button or flash the Up and Down arrows a number of times to indicate the issue.
If the opener has the up and down arrows use the table below to diagnose and resolve the issue. NOTE: The garage door can be closed by pressing and holding the door control push bar until down travel is completed.Very often trouble shooting a problem with an Overhead Door Legacy 800 (model #2026) garage door opener can be as easy as checking the LED indicator light on the motor head. If a problem exists with the Legacy 800 garage door opener, the LED will flash (blink) to indicate the specific error. Outlined below is a trouble shooting guide for the Legacy 800. Order replacement parts for the Overhead Door Legacy 800 garage door opener Remote Control Keyless Entry Wall Console Circuit Board Safety Sensor (GREEN) (RED) Carriage Belt Drive Sprocket Owner's Manual
For technical support it is recommended to contact your local Overhead Door distributor by calling 1-800-929-3667. Overhead Door Company of Northern Kentucky is a second generation family owned company that provides residential and commercial garage doors, automatic openers, dock equipment, commercial steel entry doors and retractable awnings to the Greater Cincinnati and Northern Kentucky communities. Overhead Door Company of Northern Kentucky has been a proud distributor of Overhead Door products for 65 years. If you are located in Greater Cincinnati or Northern Kentucky and need an IDA certified garage door technician to repair your garage door click here to schedule an appointment If you are located in Greater Cincinnati or Northern Kentucky and need information about scheduling an annual maintenance inspection, click here.Your garage door opener is programmed with self-diagnostic capabilities which enable you to count the number of flashes and help identify your potential problem.
This will give you a breakdown of the Liftmaster, Chamberlain, and Sears A/C model openers. These three brands make up the 70% types of openers that are sold in the country and are all diagnosed the same way. *Click here if you would like to see the diagnostic chart breakdown for Linear or Genie garage door openers. Diagnostic Chart, Symptoms, and Solutions: One flash indicates that your safety sensor wire may be open, broken or disconnected. flashes twice, then your sensor wire is either shorted or the black and white wires could be reversed. In both cases, your safety eyes will not glow steadily. You should inspect the wiring for any staples orTo test if your wires are shortened, you must detach the wires and reattach the sending eye and receiving eye separately to the opener to see which wire does not light. If the sensors are aligned and the lights glow, then the wires need replacement. If the lights do not glow, then the safety sensors need
Three flashes are connected with the door control or wire being shorted. Check the door control wires for staples in it just as you did for the safety sensors wires. You can also disconnect the door control wires andThe door control needs to be replaced if the opener activates once the wires touch. However, if the opener does not activate, then short across the red and white wires with a jumper wire. have done this and the opener now works, then it symbolizes the door control wires needing replacement. Four flashes is the most common reason your opener lights may be flashing is because of your sensor eyesIf an object has misaligned your sensor eyes then it breaks the electronic beam preventing the garage door to close properly. The door will stop and reverse back upwards. Five flashes indicate that your motor may be overheated or there may be a RPM (revolutions per minute) sensorUnplug your unit to reset it. If it continues to flash, then your RPM sensor must be replaced.
If the motor unit still does not operate at all, then it has overheated and the logic board must be replaced. Six flashes designate a motor circuit failure. The motor unit completely does not work so the receiver logic board must be replaced. Another reason your electronic beam can be broken is by an obstruction in the way of the lights. can be your sensor eyes detecting your foot leaving your door too soon, a broom or such blocking the path, or even something as simple as dust or a cobweb build up on the eyes. These are simple fixes by removing the objects or taking a cloth and dusting off the dirt. If these solutions seem too complex or do not work feel free to contact a certified technician. If you are looking for a garage door company that specializes in Garage Doors, Garage Door Repair, or Garage Door Openers, or are just looking for more information, please visit our website at precisiondoor.net. Remember, "We Fix Garage Doors Right"™.