Liftmaster 8500 Garage Door Opener Troubleshooting

Reattach sending sensor to garage door opener using shortened wires.

Liftmaster 8500 garage door opener troubleshooting.

Attach collar to the garage door opener motor. Another reason for the sensors to misalign is that the door track is loose. While holding the lock button press and hold the light button on the door control. If you see a blinking light on one of the sensors it means they aren t aligned.

Check that the screw terminals on the back of the wall mounted door control are tightened enough to hold the wires in place but not over tightened. Check power supply to garage door opener. Look also for cobwebs on the door tracks because they could also be blocking the light. Liftmaster partner product support.

Disconnect all wires from back of garage door opener. These are low voltage wires touching the exposed ends is safe. Liftmaster garage door opener model 8500 owner s manual. The illustrations shown are for installation on the left side.

Liftmaster garage door openers troubleshooting support get the liftmaster garage door support you need from chamberlain group. Loosen the set screws. The garage door opener can be installed on either side of the door see planning section page 3. With the door closed press and hold one of the buttons on your remote control currently not used to open closed the garage door.

Whether you have a belt drive chain drive or wall mount model find helpful resources manuals videos and more to help you diagnose and fix the problem. Liftmaster garage door opener model 8365 267 owner s manual. Call liftmaster partner support. Finally remove the wires from the back of the door control and touch the wires together.

30 60 cm from back each of sensor. Remove sensors from brackets and shorten sensor wires to 1 2 ft. After the opener lights flash release all three buttons. When your garage door opener is not responding to any command from the remote or the door control you need to check if the opener has electricity.

Here are some troubleshooting tips. Liftmaster partner phone support 800 528 2806. If you tried operating your liftmaster garage door opener with the remote control or door control and it didn t work. Loosen one of them and adjust it until the light shines steadily.