First off your sensors just may need cleaned off so try to gently remove any dust or dirt first and see if that works.
Chamberlain garage door sensors not working.
Cycle the garage door through the opening and closing actions using the control on the garage wall.
Remove sensors from brackets and shorten sensor wires to 1 2 ft 30 60 cm.
On chamberlain garage door openers they are usually blue.
Find the chamberlain garage door opener technical support you need to get your garage door opener operational.
Increase the open force adjustment dial slightly.
E g if the dial is set to 1 increase it to 2.
The sensors have to be aligned with each other and also have to be connected correctly to the garage door system in order to work.
Look for small led lights on the sensors.
From informational videos to product manuals and troubleshooting articles the chamberlain group resource library has the information you need.
Light doesn t activate on garage door opener when you cross safety sensor beam chamberlain group products which include the liftmaster chamberlain sears craftsman line of garage door openers have a feature where the opener light will turn on if you cross the safety sensor beam shooting across the opening of your garage door.
If they re turned on in both the sensors then there is no issue with the power supply.
Chamberlain garage door simple sensor diagnose and fix.
A common cause of a malfunctioning garage door sensor is lack of power supply.
Remove any debris dust or cobwebs from the electric eye lenses on each sensor with a clean rag.
Disconnect all wires from back of motor unit.
Get on a step ladder and remove the light lens locate the force setting dials.
If that doesn t work it could be electrical.