Customer Questions and Answers for Refrigerator Compressor Overload Protector by Whirlpool

Hi Ray. Use a volt/ohm meter part # MA-DM1 to assist you in your diagnostics. Use the R x 1 scale and put the 2 meter leads together momentarily to verify the meters ohm scale is working. You normally read .01 or .02 ohms resistance in the leads itself - normal. This tells you the meters 9v battery is good. If you are hearing a heavy "Click" every few seconds then either the overload is bad or the compressor windings are bad. After you remove the overload and let it cool completely, it should read approx. 4-6 ohms cold. If it rattles as well then the ptc disk inside is bad. Overload part # WP4387938. Thank you.