Your logic board needs replaced.
Garage door opens then drops several inches.
I d think it is also possible the cable had an issue when it wound up in the spool and slipped as it reached the top.
This brain can wear out in time so you could need a replacement.
Model cm 8600 xl m opens completely but slides back down a few inches only and stops.
Get logic board replacement.
In order to fix this you ll want to make small changes to the close limit setting until the door opener knows to stop once the door has reached the floor.
As a result when it opens we have to give it a final push manually to keep it from sliding back down.
Continue to turn the down limit adjustment until the door opens and closes properly.
It closes without any issue.
For most doors a complete rotation of the screw allows the door to advance 2 inches.
In cold temperature the space between molecules reduces making the metal shrinks.
When the logic board wears out it can cause your garage door to close then open and vice versa without explanation.
If your garage door is closing fully and then reversing to open again then it may be due to a problem with the close limit switch.
My garage door geniepro screwdrive model 1 2 h p.
Your garage door s logic board is the brain of your garage door opener.
If this is the reason your garage door is not functioning properly the lubricant must be applied.
Another reason that your garage door won t open all the way in cold weather is probably that the metal has contracted.
It depends on the particular door but if you have a two car garage with on wide door getting 7 years out of a set of springs is pretty good.
Lubricating the springs hinges and other metal parts can help your door to move easily.