While it also isn’t advisable to transport a refrigerator on its side, this is an option if the move is over a short time or distance. The unit should rest on the side that is opposite from where the compressor lines are installed. For example, if the compressor lines are attached to the compressor on the left side of the refrigerator, then it can be transported laying on its right side.
If the refrigerator has been laid on its side, it should remain in an upright position for up to 24 hours before attempting to reconnect and run it. In general, once the refrigerator has been returned to the upright position after moving it, allow it to rest for approximately twice the length of time it was kept in the flat position. For example, if the unit was on its side for four hours, allow it to remain upright for eight hours in the new place before plugging it in and turning it on.