If the rollers or other parts seem stuck, you can try brushing on some kerosene to the parts. If they are rusty, use steel wool to take away the rust and lubricate as usual. If they are badly corroded they may need replacement. You also need to take a look at the opener. If it is operated by a drive screw or a chain, you may need to lubricate these parts as well.
However, if this doesn't happen, you shouldn't think that you need garage door repair, but you shouldn't force the opener either. In case you go on hitting the button, it is possible that you will end up with a burned out motor, stripped gears or broken coils. Instead, you will have to do the work. Use a blow drier or heat gun to melt the ice.
Many people choose to have a keypad installed on their gate for easy access reasons, and so that other people can temporarily get a code to open the gate. These codes are easy to reprogram, so changing them often will increase your security and make you feel at ease that people you do not want to have the code don't have it.
Because of the moisture and the low temperatures, the door may appear to be a bit uncooperative. Believe it or not, it is possible for the door to freeze to the floor. If there is only thin ice connecting the door to the floor, usually it breaks when you open it.
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