If the remote works only when held within a few feet of the motor unit rf interference is probably the problem.
Liftmaster garage door remote works sometimes.
Liftmaster garage door opener remote controls help you replace older equipment with new top of the line ones.
There are several reasons why your remote might not operate correctly.
Locate and eliminate the source of the rf interference.
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If remote controls do not work then replace the wire.
When you press the button on your remote the opener on your garage door receives it.
Test the remote controls.
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One of the most common causes is rfi or radio frequency interference.
If remote controls do not work replace the door control.
This number is unique every time you use the garage door.
Modern remotes transmit a binary number to your garage door opener.
When the garage door opener works intermittently the logic board may be experiencing radio frequency rf interference from nearby sources such as security lights ham radios and some electronics.
We design and engineer residential garage door openers commercial door operators and gate entry systems.
The number of buttons on the replacement remote control determines the number of garage door openers gate operators or myq light accessories it can control.
Select from a range of liftmaster remote controls that are compatible with your garage door opener.
Remove the wires from the back of the door control.
If remote controls work reconnect the wires to door control and test.
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If remote controls continue to work then there was a loose connection with the wires.
Garage door opener remote compatibility chart.
Most modern garage door remotes transmit at 315 mhz.
It ll then start the motor running that opens your garage door.