If you can see the light flash on the keyless entry keypad outside your garage then the issue is not likely to be a battery.
Marantec garage door keypad blinking.
A couple of things might be happening.
A common cause of an unbalanced garage door is having the wrong size spring s on the door.
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As soon as the opener activates do not press any additional buttons until the opener stops running.
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In case the motor operates in one case by itself check the cabling searching for a faulty contact.
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In this video precision garage door of columbus ohio provides instructions for programming your garage door opener and keypad for marantec and precision models.
The door should then start to move.
If you cannot clearly determin the reason disconnect the respective impulse transmitter.
In other words you have a programming related issue.
On the keypad press and release the up down button once every 2 seconds until the garage door opener operates.
Typically the lights flash like that when trying to synchronized signals during programming.
Let it run until it stops.
The remote needs a strong signal to program the 4 digit pin code into the keyless.
Precision s professionally trained technician will always let you know if this is a potential problem and if it is diagnose the fix as a part of your free 18 point inspection.
Reconnect one impulse transmitter after the other and check it every time by a test run.
With the keypad back lighting still flashing repeat steps 1 and 2 above.
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