Firstly check that you re using it within the range required for your opener.
Garage door opener logic board troubleshooting.
If you need to install a new system or replace a broke or failing circuit board liftmaster has a wide range of garage door logic board products to help fix any issues.
Replace the main gear drive if the garage door opener makes a grinding noise but the door doesn t move your main drive gear is probably toast.
Reattach sending sensor to garage door opener using shortened wires.
Common problems experienced with garage door openers are often due to a faulty logic board.
Take the garage door opener down.
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Here is a brief trouble shooting guide.
Also verify the antenna on the motor unit is in the proper placement.
If sending sensor indicator light glows steadily attach the receiving sensor.
Step 1 remove the portion of the garage door opener that holds the controls from your garage s ceiling.
Make sure that the antenna on the motor unit is hanging downward and is not damaged in any way.
Unplug the garage door opener and check the wiring connections on the panel.
If the wiring connections are okay wait a few minutes before plugging the garage door opener back in disconnecting the power resets the logic board after an electrical disturbance.
If you re too far away this can cause a problem with opening or closing the door.
The main drive gear is the plastic gear that comes in direct contact with the worm drive gear on the motor.
If the light does not come on when the door opens or go off when it closes the problem could be the logic board.
You may also need to reprogram your keypad or replace the batteries in it.
Remove sensors from brackets and shorten sensor wires to 1 2 ft.
Remove the logic board.
You can repair the circuit board so that your garage door opener can again properly function.
30 60 cm from back each of sensor.
When a circuit board in a garage door opener fails the door will suddenly stop while in motion or it will not open or close at all.
Disconnect all wires from back of garage door opener.
A power surge due to lightening or a power outage in the house can damage the boards.
Position a work table near the area under your motor unit to hold the garage door.
Then test whether the opener works.
