Dave H. for Model Number Whirlpool WRS973CIDM Side by side The intake vent on the bottom of the refrigerator cavity rear panel keeps clogging with ice. Have defrosted it several times. This last time I removed the back panel of the refrigerator. The black evaporator coil was frozen solid about two inches from its' bottom. I don't see any defrost heater there. This is supposed to have Adaptive Defrost, but it seems to have a problem defrosting, only on the refrigerator side. Can you give me any help? Have spoken with appliance techs who have said that is a problem with these Whirlpool models. Thanks
Answer Hello Dave, This sounds like the defrost drain may be freezing up on you. This would be accessed by the removal of the rear wall inside the freezer compartment. You can thaw the drain tube with a hairdryer or a clothes steamer. You should then chase the drain with a piece of weedeater line and pour in about 2 tablespoons of white vinegar to prevent any possible algae formation. You should install a heater extension 819043 to help prevent the issue again. You should also set the freezer one setting warmer if the freezer compartment average temperature is below 0°F. Read More... Answered by AppliancePartsPros.com | Thursday, September 10, 2020