LiftMaster 8557 Support Questions

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Error Code 12
Garage Door will not close due to the following display: Sensor Wiring Inter - Error Code 12

Error 12
How do you fix code 12

Alarm!
My alarm will not stop sounding, what is wrong?

Error 12
The steps we took to determine your issue:1. The error code is letting us know there is a sensor iss...

Error Code 12
We had this issue recently as well. We called lift master/chamberlain and they sent us the below dir...

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