Ed for Model Number 2004 Estate by whirlpool corp. For several years my freezer evaporator coil would freeze up and refrigerator would stop cooling. So I would defrost it and it would go back to working fine for several months. In the past few months it freezes up in a few weeks. I thought I would change out the bi metal thermostate but decided to ask you first. thanks
Answer Ed, It sounds like you may have a defrost problem with the unit. Check and see if there is any frost build up on the back wall of the freezer. If so, you will need to test the defrost heater and the defrost thermostat. They should read closed for continuity when cold. You can test this with a multi-meter TJMA-DMT3. I will include a link at the end to assist you how to use the multi-meter if needed. If both parts are good, you will need to replace the defrost timer. Once the problem is repaired, you will need to thaw out the ice on the coils before the unit will operate properly. http://forum.appliancepartspros.com/oven-repair-including-ranges-cooktops/4810-how-check-continuity-ohmmeter.html Read More... Answered by AppliancePartsPros.com | Tuesday, August 27, 2013