If this doesn t fix your problem then the problem is more than likely the safety reversing sensors.
Garage door opener learn button led light not flashing.
The remote control will not work.
Below is a diagnostic chart showing the common light code for the arrow.
If the sensor indicator lights do not light replace the safety sensors.
Non stop flashing indicates rf interference in the area.
To unlock your garage door opener push the lock button for 5 seconds.
Since the lack of power supply is a common problem check the wires around the sensor when the led lights are not flashing.
There is a led light next to or near the smart button programming learn button on the outside of the motor cover up above the antenna.
Garage door sensor locations.
The answer don sent is correct.
I am sending you an image showing what the flashes of the learn led mean.
Inspect door control wires for a short staple in wire replace as needed.
This led light flashes a specific number of times.
Once you see the double flash press the control button on the remote control.
One is the arrow keys found on the opener and the second is through the small led light located next to the learn button.
Count the number of times the led light beside the learn button flashes before it pauses and begins blinking again.
Step 3 go to the safety sensors and follow each of the wires where they staple to the wall and ceiling if the led blinks one time and pauses.
Liftmaster light blinking liftmaster comes with two methods of self diagnosis.
Many times the malfunction can be due to a loose connection or broken wire.
If there are white shaving inside the unit replace the gears if the opener is moving less than 6 to 8 inches 15 20 cm the rpm sensor may not be functioning properly.
Assist you in troubleshooting your garage door opener.
Led is not lit on door control.
The amount of times they flash corresponds to a specific opener issue.
Disconnect the garage door from the opener and cycle the opener.
If your garage door opener is still blinking try realigning the safety reversing sensors.
Once you push this button the light on the garage door opener will flash twice.
Unplug the garage door opener and remove the cover.
Sweep the garage floors and look through the sidings to ensure that there are no objects to obstruct the door.
Align sensors if the indicator lights glow replace the wires for the sensors.
On the garage door opener pictured below the led light is between the square purple smart button and the purple antenna wire.
