Chamberlain Garage Door Opener Manual Error Code 42

Liftmaster 45dcbl5 garage opener panel has a fault code of excessive opening force detected code 42 and will get a excessive closing force detected code 43. I would also verify that the door is not going up slightly crooked just enough to bind perform the following tests first i would close the door and then disconnect the door from craftsman garage door opener. Pull the emergency door release and check the up and down travel of the garage door for binding.

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