Blinking lights on the garage door opener may indicate blocked or misaligned safety sensors, which can prevent the door from closing; clean the sensors and ensure proper alignment. Use short strands of sensor wire to test the safety sensors directly at the motor unit, checking for defective sensors or wiring issues that could hinder door closure.Garages, Garage Door Openers, Work Shops & Sheds, Breezeways and Carports - garage door opener Craftsman - Does anyone know what it means when my Craftsman Garage Door Opener (model 139.539) blinks 5 times over and over again on the led on the unit, the hard-wired door switch illumination light flickers, and theI have a 1995 Craftsman Garage Door Opener-Model 13953627SRT 1/2 HP A dim light inside the control box where the bulb located - blinks about five times - skips and keeps doing the same thing. All ligh …Check the following in order: Check the balance of the garage door opener Disengage the garage door from the opener.Manually lift the garage door 3 to 4 feet off the floor and release.If the garage door forcefully closes to the floor, or is difficult to manually open and close, contact a trained door technician to have the door serviced.I was given a garage door opener from 1994. Model number HBW0777. ... but the light then blinks 10 times as expected when having a sensor problem. ... Troubleshooting Craftsman Garage Door Opener - Won't Close. 0. Newly installed Chamberlain garage door opener blinks lights twice when trying to open. 1.This is a video of how I fixed my problem with my garage door sensor light blinking four times basically the contacts on the other side of the red one which ...Part number 114A2399 1-800-252-1698 between the hours of 6:00am and 11:00pm, Central Time, 7 days per week, to speak to a Sears parts professional. THey were having problems with the site. I couldn't get the price of the manual. ... Craftsman Garage Door Opener External remote I have a Craftsman Garage door opener with …Garage Door Opener; CMXEOCG472; Craftsman CMXEOCG472 Manuals. Manuals and User Guides for Craftsman CMXEOCG472. ... Automatic Garage Door Opener Safety & Maintenance Guide. 43. Français. 50. Examen des Symboles de Sécurité Et des Notes D'avertissement. 51. Fonctionnement Sans Surveillance. 51. If your opener is still blinking, your sensors are likely misaligned. Next, follow these steps: Using a ruler, measure the distance from the ground for each sensor to ensure that it is the proper distance from the ground. Remove the wing nut with a wrench and adjust the sensor up or down until you reach the correct alignment. Check with your ... 1How to Change Frequency on Craftsman Garage Door Opener. 1.1Understanding Garage Door Opener Frequencies. 1.2Gather the Necessary Tools. 1.3Locate the Frequency Reset Button. 1.4Resetting the Frequency. 1.5Syncing a New Remote Control. 1.6Wi-Fi-Enabled Openers: Changing the Frequency. 2Frequently Asked Questions. Installing a Chamberlain MyQ Garage Door Opener is a simple and easy process that can be done in just a few steps. With the help of this guide, you’ll be able to get your new opene...Oct 31, 2021 ... the up and down arrow lights on the unit each blink 2 times and the light blinks 10 times. Then, the up and down arrow lights flash 1 timeApr 20, 2024 · A flashing light on a garage door opener can be a sign of a range of concerns. One common place problem is when the light on the opener flashes three times. This specific flashing pattern can reveal a problem with the safety reversing sensors, which are constructed to thwart the door from closing on a person or object. Issues with the sensors A simple way to do this is to unplug the garage door opener and then plug in another device, say your phone or a light bulb, to see if it lights up. Another place to check is the fuse or the circuit breaker of the garage. Verify that there is no break in the circuit. 2. Check the Door Locks.Resolving the Issue: A Step-by-Step Guide. 1. Sensor Realignment. Identify the sensors on either side of the garage door. Ensure they are facing each other and are not obstructed. Use a level to align them properly. 2. Limit Switch Adjustment. Refer to your garage door opener’s manual for instructions on accessing the limit switch.Oct 31, 2021 ... the up and down arrow lights on the unit each blink 2 times and the light blinks 10 times. Then, the up and down arrow lights flash 1 timeStep 3: Check the Door’s Balance. Step three is about checking the door’s balance. If the door is off balance, it can put extra stress on the opener and make it wear out faster. To check the balance, disconnect the opener and try lifting the door halfway up by hand. If the door stays put, it’s balanced.Find the Craftsman garage door opener code flashing on the motor unit and follow the troubleshooting steps listed in the chart below to fix the problem. For example, the Craftsman garage door opener troubleshooting for the light flashing 5 times may involve motor replacement if the door travels smoothly and the code appears after a single use.Align the Tracks: Inspect the garage door tracks to ensure they are properly aligned and free from any obstructions. Use a level to check for alignment and adjust as needed. Test the Garage Door Opener: Listen for any unusual sounds or signs of malfunction while operating the garage door opener. Inspect and adjust the limit switch …If the door is open, it will not close, and the opener lights will blink ten times. Craftsman Wi-Fi garage door opener troubleshooting. Troubleshooting your smart garage door opener will depend on the …If it's interrupted while the door is closing, the door reverses and a safety light on the opener flashes 10 times. The Safety Sensors The installation instructions for a Craftsman door opener call for installing the sensors 6 inches above the floor, and you can mount them to the floor, the wall or the door track with the brackets provided.A video from Sears PartsDirect explains that if the motor unit lights blink 10 times when trying to close your garage door, it's typically due to a problem with the safety sensors.The video offers easy solutions, such as checking the opener's alignment and removing obstructions.. A video from Sears PartsDirect provides simple fixes for a garage door … I have a Craftsman Garage Door Opener Model 139.53675SRT2. The door reverses on closing and the light blinks 10 times. Several weeks ago it failed every several days, but now it fails consistently. Both green sensor lights are on and there's nothing blocking the beam. I've cleaned the lenses on both sensors. Craftsman garage door lights blink twice garage door opener will not work. brand new CMXEOCG472, New install - Answered by a verified Home Improvement Expert ... Better service if you contact them on Monday after 9:30am Central time. Alternately repackage the opener as best you can and return it to place of purchase for a swap. ... Light blinks ...Sears Craftsman 41A5021-3H-315 Garage Door Opener Circuit Board See Sears Craftsman Transmitter Compatibility Chart for complete list of Sears Craftsman compatible Logic Boards. New part # is 41A5021-3M-315 (same part letter doesn’t matter in this case) it is the 315mhz unit with purple learn button. works with Sears Craftsman Models …Nov 30, 2016 · This will explain how to troubleshoot a garage door opener that won't close the door and blinks 10 times. Mostly, this indicates the garage door sensors are out of alignment, or there is something in the way of the sensors. Garage door openers made after 1993 are equipped with sensors positioned on both sides of the vertical rails. To exit programming, press and release any remote control button except the button that was just programmed. Press and release the Learn button on the garage door opener or door control. Press the remote control button programmed in step 2 until the garage door opener lights flash or just hold 4 seconds. Test remote control.Examine the state of the wires connected to the photo-eye and replace them if necessary. Clean the photo-eye lens with a microfiber cloth to remove any dust. The door may be off track and fail to move. Unplug the garage door opener from power. Then, lift the garage door to confirm if it’s rolling well on the track.If your Craftsman garage door opener isn't working, don't panic! We have a step-by-step guide on how to troubleshoot and fix the problem. 24 hours 7 days a week. 416-779-8772. Technicians Available Now: Menu. About. ... The garage door was installed in about 2 hours. The capping around the frame took longer, but I think is a must when getting a ...Dec 1, 2020 ... This video demonstrates what to do if your garage door won't close and the lights on the Chamberlain garage door opener are flashing.If it's interrupted while the door is closing, the door reverses and a safety light on the opener flashes 10 times. The Safety Sensors The installation instructions for a Craftsman door opener call for installing the sensors 6 inches above the floor, and you can mount them to the floor, the wall or the door track with the brackets provided.Dec 16, 2020 ... 10:19 · Go to channel · Garage Door Safety ... LiftMaster 8365: Door Won't Close and Lights Blink. ... Garage door opener troubleshooting & r...If your garage door opener won’t close and the motor unit lights blink 10 times, it usually means you have a problem with your safety sensors. In this video from Sears PartsDirect, we’ll show you some simple fixes, like checking the garage door opener’s alignment and clearing obstructions.Check the following in order: Check the balance of the garage door opener Disengage the garage door from the opener.Manually lift the garage door 3 to 4 feet off the floor and release.If the garage door forcefully closes to the floor, or is difficult to manually open and close, contact a trained door technician to have the door serviced.A video from Sears PartsDirect explains that if the motor unit lights blink 10 times when trying to close your garage door, it's typically due to a problem with the safety sensors.The video offers easy solutions, such as checking the opener's alignment and removing obstructions.. A video from Sears PartsDirect provides simple fixes for a garage door … The Garage Door Opener will not close, and the opener lights flash or click 10 times.If no Lights are installed you will hear the opener click while attempting to flash the lights.NOTE: Any garage door opener or replacement logic board manufactured after February 3, 2022, will no longer have this feature. Understanding the common causes of a Craftsman garage door opener not closing will help you narrow down the issue. Here are some potential culprits: …The Flashing Led Indicator was blinking 5 flashes which indicated either motor or circuit board problem. Since the motor itself rarely fails as claimed by t...Pressed the Garage door opener wall button and the door worked in up direction, 7. When the button pressed again, the door is not going down and light bulb blinks 10 times. When the button is kept pressed the door goes down, 8. On the opener main unit the learn indicator blinks 2 times every couple of seconds indicating something wrong with ...The light constantly blinks and it is constantly making a clicking sound. Cam... Can anyone tell me what is wrong with this garage door opener or how to fix it? The light constantly blinks and it ... 1How to Change Frequency on Craftsman Garage Door Opener. 1.1Understanding Garage Door Opener Frequencies. 1.2Gather the Necessary Tools. 1.3Locate the Frequency Reset Button. 1.4Resetting the Frequency. 1.5Syncing a New Remote Control. 1.6Wi-Fi-Enabled Openers: Changing the Frequency. 2Frequently Asked Questions. Below is a table with all models of Craftsman garage door openers and their owner’s manual. The long exhaustive way to find the manual is to go through the list till you find the model number of your opener and then download the manual. I don’t recommend you do that. Alternatively, simply type the model number of your Craftsman garage door ... Jul 19, 2022 · Craftsman Garage Door Blinks 10 Times Won’t Close. When the Craftsman Garage Door Opener-Closer blinks 10 times, the sensors aren’t lined up right or that something is blocking the sensor’s path. The possible solutions are: Realigning the safety sensors which are attached to the opening-closing pathway of the garage door. CRAFTMAN 0.5 HP Chain Drive Garage Door Opener Kit lets you come and go with ease by simply using the CRAFTSMAN® myQ app. Now from your smartphone, you can control your garage door from anywhere at anytime as well as get real-time alerts. Designed for 7-ft garage doors, the opener’s rugged chain drive will get the job done, day after day. …To do so, grab your garage door opener remote and press the control button. Observe the response of the garage door opener unit and pay close attention to the behavior of the light indicator. If the blinking light issue persists despite unlocking the lock button, it suggests that the problem lies elsewhere within the system, necessitating ...Garage door openers are a convenient way to open and close your garage door without having to manually do it. Chamberlain MyQ garage door openers are some of the most popular on th...If you push the garage door opener switch when the sensors are obstructed or not aligned properly, your garage door will reverse, and the lights will blink 10 times. If you notice this occurrence, start by seeing if anything is obstructing the sensor’s field of view. If this is not the issue, then your sensors will probably need to be aligned.Mar 25, 2015 · The Flashing Led Indicator was blinking 5 flashes which indicated either motor or circuit board problem. Since the motor itself rarely fails as claimed by t... Garages, Garage Door Openers, Work Shops & Sheds, Breezeways and Carports - green light on g. door opener blinks 5 times - Craftsman 1/2 hp garage door opener (model #1395627SRT) built in 1995. When I press the button it makes a humming, as if the motor is not engaging, and door will not open or close. Noise onlyMy craftsman garage door opener light blinks (I think 10 times) and just moves the door about 8 inches, then returns. I understand the blinking light is intended as a code for the type of problem, but don't know what it is. The door works fine manually.Craftsman Garage Door Blinks 10 Times Won’t Close. When the Craftsman Garage Door Opener-Closer blinks 10 times, the sensors aren’t lined up right or that something is blocking the sensor’s path. The possible solutions are: Realigning the safety sensors which are attached to the opening-closing pathway of the garage door.View and Download Craftsman Garage Door Opener owner's manual online. 1/2 HP 315MHz GARAGE DOOR OPENER For Residential Use Only. Garage Door Opener garage door opener pdf manual download. Also for: 139.53985dm.button or wall panel push button is flashing. The Chamberlain, Liftmaster & Craftsman garage door opener wall buttons will flash when the opener is placed in lock-out mode. The garage door opener flashing wall button is completely different from photo-cell LED light being out or the motor head LED light flashing. The constantly flashing wall ...The garage door opener lights flashing and the door not closing could be due to safety reversing sensor issues or the LOCK button. The main light flashes 10 times if there is a sensor issue, and aligning the sensors is a good starting point for troubleshooting.1. My garage door opener will not close , I get the 10 flashing light signal. I have eliminated the sensors as the culprit by releasing the the door by pulling the red rope and when i push the button to engage the opener it works properly and even stops when i block the sensors. When i hook the door back up it trips and will not close and sends ...Craftsman door opener has yellow learn button but when depressed does not blink … read more. Thom Bouis. TX Licensed Appliance Inst... AA Occ. Safety & Health Pr... 356 satisfied customers. Garage door won't shut. One sensor light is the other is. Garage door won't shut. One sensor light is green the other is yellow … read more.Home Improvement Questions. My craftsman garage door opener light blinks (I think 10 times) and just moves the door about 8 inches, then returns. I …Perhaps the most common issue for many homeowners is the safety sensors are not properly aligned the light will blink 10 times. The light from the opener blinks 10 times to warn you about misaligned photo eyes. To fix this issue, first, locate the two photo eyes attached to your garage door and clean the lens using a soft microfiber cloth. One of the most common issues with Craftsman garage door openers is when the light blinks 10 times. This blinking pattern is an indicator that the motor unit has experienced a power surge and needs to be reset. Fortunately, resetting the motor unit is a straightforward process that doesn't require any special tools or knowledge. Dec 1, 2020 ... This video demonstrates what to do if your garage door won't close and the lights on the Chamberlain garage door opener are flashing.Programming the keypad for a Craftsman garage door opener requires pressing the smart button at the lower back of the unit, coming into a brand new code and pressing enter. The unit alerts that it has commonplace the ... The big lights will blink 10 times whilst you attempt to near the door and the sensors are blocked or misaligned. …Garage Door Opener; CMXEOCG472; Craftsman CMXEOCG472 Manuals. Manuals and User Guides for Craftsman CMXEOCG472. ... Automatic Garage Door Opener Safety & Maintenance Guide. 43. Français. 50. Examen des Symboles de Sécurité Et des Notes D'avertissement. 51. Fonctionnement Sans Surveillance. 51.If the opener is not a Wi-Fi enabled Garage Door Opener and is within the warranty time frame, the logic board can be replaced. Replacement logic boards will provide the obstruction notifications once installed. If the door makes contact with an obstruction while opening, the door will stop, the opener will beep, and the lights will flash 5 times.Garage door openers are a convenient and essential part of any modern home. They make it easy to access your garage with just the click of a button. However, like any mechanical de...I've got the usual 1/2 HP Craftsman Garage Door Opener. I've looked at all the messages on this forum and most seem to involve the sensor light and partial operations. However I have the following issue. When using the wall panel switch, everything works no problem. Using the remote only causes the motor units light to blink for maybe 10 times.Garage door openers have become an essential part of our daily lives, providing convenience and security. However, like any other electronic device, they rely on batteries to funct...December 2, 2022 by bondojnr. Table of contents. Why does the garage door opener blink ten times? Garage door opener light flashes ten times: Causes and fixes. Error codes for older garage door opener units. Error codes for newer garage door opener units. Blocked safety sensors. Misaligned garage door safety sensors.Aug 16, 2017 ... Garage door lights flashing/flickering - Most common causes! ... 10:20 · Go to channel. Chamberlain Garage ... Genie Craftsman Chamberlain ...Flashing garage door lights are like a "Check Engine Light" & will indicate which part needs to be addressed / fixed!If there is a safety reversing sensor issue, the main light (s) flash 10 times. Start with aligning the safety sensors. Note : You can close the garage door by pressing and holding the door control push bar until down travel is completed.Garage door openers are a convenient and essential part of any modern home. They make it easy to access your garage with just the click of a button. However, like any mechanical de...Align the Tracks: Inspect the garage door tracks to ensure they are properly aligned and free from any obstructions. Use a level to check for alignment and adjust as needed. Test the Garage Door Opener: Listen for any unusual sounds or signs of malfunction while operating the garage door opener. Inspect and adjust the limit switch …Check our recent post about pro tips on how to troubleshoot your garage door opener liftmaster: Garage door safety sensors: 1 Check for any subject between the sensors. 2 Clean the sensors. 3 Realigning the sensors. 4 Check the wires. Remote control and wall button: 1 Lock switch system is activated. 2 Dead batteries.If the door doesn't open when you're standing close to the motor unit, follow the troubleshooting tips in our garage door opener remotes won't work video to help you fix the problem. If the garage door opener lights blink 10 times when you're trying to close the garage door, then the safety sensors may need adjustment or the sensor wiring may ...A video from Sears PartsDirect explains that if the motor unit lights blink 10 times when trying to close your garage door, it's typically due to a problem with the safety sensors.The video offers easy solutions, such as checking the opener's alignment and removing obstructions.. A video from Sears PartsDirect provides simple fixes for a garage door …Resolving the Issue: A Step-by-Step Guide. 1. Sensor Realignment. Identify the sensors on either side of the garage door. Ensure they are facing each other and are not obstructed. Use a level to align them properly. 2. Limit Switch Adjustment. Refer to your garage door opener’s manual for instructions on accessing the limit switch.Aug 25, 2023 ... New Chamberlain garage door open will not work! When you press the remote the garage door opener flashes 2 times.I installed a new Chamberlain B4505T garage door opener. When I press the open button the lights blink twice and nothing happens. The sensors seem to be installed correctly. There is an amber light in one and a green light in the other. If I block the beam the green light goes out. Does anyone have any idea of what could be wrong?Garages, Garage Door Openers, Work Shops & Sheds, Breezeways and Carports - green light on g. door opener blinks 5 times - Craftsman 1/2 hp garage door opener (model #1395627SRT) built in 1995. When I press the button it makes a humming, as if the motor is not engaging, and door will not open or close. Noise onlyStep 1: Locate the Learn Button. Step 2: Clear Existing Codes. Step 3: Reprogram the Garage Door Opener. Step 4: Reprogram the Keypad (If Applicable) Step 5: Test the New Settings. Tips and Troubleshooting. Understanding the Craftsman Garage Door Opener. Functions of the Craftsman Garage Door Opener. Conclusion.Apr 16, 2014 · If it's interrupted while the door is closing, the door reverses and a safety light on the opener flashes 10 times. The Safety Sensors The installation instructions for a Craftsman door opener call for installing the sensors 6 inches above the floor, and you can mount them to the floor, the wall or the door track with the brackets provided. Programming the keypad for a Craftsman garage door opener requires pressing the smart button at the lower back of the unit, coming into a brand new code and pressing enter. The unit alerts that it has commonplace the ... The big lights will blink 10 times whilst you attempt to near the door and the sensors are blocked or misaligned. …Nov 24, 2023 · A malfunctioning garage door opener can be a culprit in this scenario. Check for any unusual noises, erratic movements, or flashing lights on the Craftsman garage door opener unit. Issues with the motor or circuitry may cause it to stop prematurely. Regular maintenance and timely repairs can help keep the opener in optimal working condition. 3. SHowing that I have green lights on safety sensors. Then showing the amber indicator light blinking 5 five times, stops blinking and then repeats for 5 more ...A simple way to do this is to unplug the garage door opener and then plug in another device, say your phone or a light bulb, to see if it lights up. Another place to check is the fuse or the circuit breaker of the garage. Verify that there is no break in …May 25, 2016 · Check for error codes If any sensor lights doesn’t come on, check the LED troubleshooting light on the motor unit for an error code. The control inside the motor unit flashes the... The amber indicator light shown in post #4 is blinking 5 five times, stops blinking and then repeats for 5 more times stops blinking, blinks five more times...etc. When I push the remote control or wall mounted control to operate the opener, you hear a clicking sound from the unit.Oct 30, 2014 ... 5:59. Go to channel · How to Fix a Garage Door Opener that Won't Close the Door: Lights Blink 10 Times. Sears PartsDirect•1M views · 6:32. Go to&...
Programming the keypad for a Craftsman garage door opener requires pressing the smart button at the lower back of the unit, coming into a brand new code and pressing enter. The unit alerts that it has commonplace the ... The big lights will blink 10 times whilst you attempt to near the door and the sensors are blocked or misaligned. …. Yo gabba gabba devo
Here’s what to look for: One flash indicates that your safety sensor wire may be open, broken or disconnected. Two flashes indicate that 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 or incorrect wiring.A green light on the wall mount of my Craftsman garage door opener continuously flashes and the door neither opens nor closes. ... times this worked and got rid ...May 25, 2016 · Check for error codes If any sensor lights doesn’t come on, check the LED troubleshooting light on the motor unit for an error code. The control inside the motor unit flashes the... Raw muscle rules this CRAFTSMAN® 1.25 HPs Belt Drive Garage Door Opener Kit so that lifting a 7-ft. garage door is no problem even in cases of severe weather or when the door is made of solid wood. Ideal for attached garages, the steel-reinforced belt drive delivers smooth and quiet performance time after time. The opener’s strength is only …Replacement Safety Sensors: https://amzn.to/2YUuWGvWith this short video I will show you how to get your garage door closed when the light is flashing 10 ti...My understanding (could be wrong) is that electric garage door openers can be operated manually (e.g., in case of power failure) and my idea was to test it from various starting points. But you've already covered the main two - if opened, can't close, if closed, can't open.December 2, 2022 by bondojnr. Table of contents. Why does the garage door opener blink ten times? Garage door opener light flashes ten times: Causes and fixes. Error codes for older garage door opener units. Error codes for newer garage door opener units. Blocked safety sensors. Misaligned garage door safety sensors.In this case, the opener’s light will flash three times to indicate a problem with the sensors. Solution to this problem. To fix this issue, first check that the sensors are properly aligned. The sensors should be pointing right away at each other and there should be a clear path in the middle of them. If the sensors are not properly aligned ...This is a video of how I fixed my problem with my garage door sensor light blinking four times basically the contacts on the other side of the red one which ...When you see your garage door opener lights flashing and the garage door will not close, it could be the safety reversing sensors or the LOCK button.; If there is a safety …Here’s Why. If your garage door opener is beeping every 30 seconds, you most likely need to replace the backup battery in your automatic opener. Backup batteries open and close your garage door when the power is out and last 2-3 years under normal use. Most Chamberlain, Craftsman, and LiftMaster garage door openers will use the …Blinking lights on the garage door opener may indicate blocked or misaligned safety sensors, which can prevent the door from closing; clean the sensors and ensure proper alignment. Use short strands of sensor wire to test the safety sensors directly at the motor unit, checking for defective sensors or wiring issues that could hinder door closure.Craftsman 13953200 garage door opener parts - manufacturer-approved parts for a proper fit every time! We also have installation guides, diagrams and manuals to help you along the way!Apr 3, 2023 · I installed a new Chamberlain B4505T garage door opener. When I press the open button the lights blink twice and nothing happens. The sensors seem to be installed correctly. There is an amber light in one and a green light in the other. If I block the beam the green light goes out. Does anyone have any idea of what could be wrong? Garages, Garage Door Openers, Work Shops & Sheds, Breezeways and Carports - green light on g. door opener blinks 5 times - Craftsman 1/2 hp garage door opener (model #1395627SRT) built in 1995. When I press the button it makes a humming, as if the motor is not engaging, and door will not open or close. Noise onlyTo do so, grab your garage door opener remote and press the control button. Observe the response of the garage door opener unit and pay close attention to the behavior of the light indicator. If the blinking light issue persists despite unlocking the lock button, it suggests that the problem lies elsewhere within the system, necessitating ...To reset the keypad for your Craftsman garage door opener 1/2 hp, follow these steps: 1. Locate the “Learn” button on the back of the opener. 2. Press and release the “Learn” button. The LED light will blink steadily. 3. Within 30 seconds, enter a new four-digit personal identification number (PIN) on the keypad. 4.A green flashing light on a garage door opener typically indicates that the door is in use. This light will flash when the door is opening or closing. When the door is fully open or fully closed, the green light should stop flashing and remain steady. Depending on the model a continuous flashing green light can mean that there are issues with ...If the garage door won't close and blinks 10 times, there may be an issue with the sensors. Why is my garage door opener light flashing? When a garage door opener's lights are flashing and the door doesn't close, it may be due to safety reversing sensors or the LOCK button. In case of an issue with safety sensors, the main light flashes 10 times..