Craftsman Garage Door Opener Troubleshooting Flashing Light 4 Times

This will explain how to troubleshoot a garage door opener that won t close the door and blinks 10 times.

Craftsman garage door opener troubleshooting flashing light 4 times. If you own a new garage door opener that comes with a locking feature it s possible someone may have accidentally locked your garage door by pressing the lock button. Troubleshooting a liftmaster opener with a flashing light involves inspection of the safety reverse sensing system. Pull the emergency door release and check the up and down travel of the garage door for binding. Once you push this button the light on the garage door opener will flash twice.

This most likely indicates that the garage door sensors are out of alignment or there is something in the way of the sensors. T his is a pretty uncommon problem but one that can happen after you ve first installed your garage door opener. Try making small adjustments. Shop our garage door openers and find out where you can buy yours locally or online.

Allow the motor to cool for about 15 minutes before restoring power and using the garage door opener. If the diagnostic led on your craftsman garage door opener blinked two times then it means the safety sensor is disconnected from the garage door opener. The motor can overheat if the door is opened and closed several times in a row. An open door will not close if the infrared beam is broken.

If this doesn t fix your problem then the problem is more than likely the safety reversing sensors. To troubleshoot this first check if any of the safety sensor wires have been disconnected behind your craftsman opener. Craftsman garage door openers are trusted to do what you need them to do. Sign up for email and get the latest on new products events contests and more.

Garage door openers made after 1993 are equipped with sensors positioned on both sides of the vertical rails. It s important to get this switch at just the right distance from the motor so that the door is able to close all the way but the motor also knows to stop running. The constantly flashing wall button simply means that the door was either put into lock out mode by someone using the wall panel control or for some reason it defaulted into lock out mode in error. Liftmaster motors will not operate when something obstructs the infrared beam between the safety sensors at the bottom of the garage door tracks.

If you try to open your door using a remote while the lock system is engaged you ll notice that the garage door light will begin blinking continuously. Unplug the garage door opener to reset the logic board. This is related to the up limit switch.