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Garage door opener suddenly loses range.
Make sure that the antenna on the motor unit is hanging downward and is not damaged in any way.
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.
If you have lost a garage door remote it s time to erase the lost remote from the memory of your opener and to reset the code.
T his is a pretty uncommon problem but one that can happen after you ve first installed your garage door opener.
Place a stepladder at the area of the garage door.
This is related to the up limit switch.
To isolate potential sources of interference turn the circuit breaker off to the garage and plug the garage door opener into an extension cord from another room.
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A lower voltage in the battery will reduce the garage door opener s range.
It s possible you are out of range of the antenna inside the garage.
Erase the remote from memory reset the opener s code.
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If the range improves then the interference is coming from a device in the garage.
Modern garage door openers are essentially small radios that operate at about 315mh and a few feet of extra distance can affect the signal.
Try making small adjustments.
Replace the battery or batteries in the remote control.
Any electrical device can be the source of the problem.
The range on the remote of my garage door opener liftmaster model 2110 or 2220 is suddenly so short that it barely works when the remote is outside the garage door.
Most homeowners have a spare garage door remote which is great in a situation where one goes missing.
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I suspect an issue with the antenna wire.
Liftmaster 41a3504 residential garage door opener antenna extension kit.