I called a garage door tech and minutes and $later. Hopefully your problem will be as easy as this one and. Marantec garage door opener , not closing can be tricky sometimes. This is related to the up-limit switch.
Try making small adjustments. This will cause the garage door opener to FAIL TO. Might have taken a lightening strike, knocked out GFCI that was on the circuit that garage door opener was on.
When I reinstalled GFCI, the circuit was good to go, but only one of my garage doors opened and closed correctly. One of the openers would only go up, not down. A lot of good tips for your garage door opener. The main drive gear is the plastic gear that comes in direct contact with the worm drive gear on the motor.
Garage Door Reverses Before Hitting the Floor. If there are problems with the remote that seems to occur only when the weather is either cold or warm, the problem probably has to do with the infrared safety sensors that run along the bottom of the door. Next time it happens, try going inside the garage and holding down the wall switch to override the safety. If the door works when this is done, then it is indeed the sensors that need to be.
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