First check the sensor lights.
Garage door problems sensors.
Try making small adjustments.
Others may be screwed in to keep the battery more secure so this type of transmitter will require a screwdriver to open.
On most you can simply slide the door open on the back of the transmitter and remove the battery.
The first is an obstruction in the path of the door and therefore in the path of the sensor.
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The transmitters remotes will not work to close the garage door.
If you find the lights turned off in one or both the sensors it indicates that there is a problem in power supply.
Two types of accidental obstructions can cause the safety sensor to prevent a garage door from closing.
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If they re turned on in both the sensors then there is no issue with the power supply.
You will find that the door will only move an inch or so in the close direction and reverse.
The problem is either due to a blocked path between the sensors dirty eyes loose wires at the sensors or at the motor head or just bad sensors.
Depending on the brand of garage door you have one of the sensor lights may flash dim or go out completely when the beam is interrupted.
I called and within 90 minutes they were at my house replacing my failing garage door opener.
This is related to the up limit switch.
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.
Look for small led lights on the sensors.
The sensitive electronics in the remote control or keypad can sometimes lose its programming and may need to be reset.
Changing the battery on your garage door transmitter is pretty simple.
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Whenever there is an obstruction the garage door will automatically reverse before causing any damage.
T his is a pretty uncommon problem but one that can happen after you ve first installed your garage door opener.
The replacement safety sensors project an invisible light beam across the inside of the garage door to prevent accidents and are required for safe use of all chamberlain garage door openers.
A common cause of a malfunctioning garage door sensor is lack of power supply.
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Reprogram the remote control or keypad.
If the door functions fine with the hardwired wall switch it s likely the battery needs replacing in the remote control or keypad.