but sometimes a little amount of water will glue the door to the driveway, side jambs, or whatever. These motors are not strong enough to break the bond created by a small amount of water.
Could also be that things are just too cold. Batteries like car batts do not have as much power in real cold conditions. This door system just might only work for less cold situations.
do you have an emergency method of gaining entrance? If not, develope one.
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