mcq142 wrote:
I have Mac Lift Merlin Series that opens on it's own, especially during
the night. It is used on a one car door size. The larger 2 door model
instaledd in the next bay never has this problem. This has only been a
problem during below freezing temps. Thanks, Tom

Does the model have a lock mechanism? My Genie model allows me to flip
a switch and it cannot be opened.