The compressor relay starts the compressor. A faulty relay can result in the compressor trying repeatedly to start before finally starting or in its failure to start at all. The relay is accessed from the lower rear of the freezer. The compressor is labeled "A", the relay is located in the terminal box which is located at the position labeled "B".
Before testing the compressor motor, unplug the freezer to avoid an electrical shock hazard. Also, if the compressor uses a capacitor, it may contain a lethal electrical charge. Do not touch the terminals until you have discharged the capacitor.
The compressor relay can be accessed by removing the terminal cover box. The cover is held on by tension or with a retaining clip.