Hdt1980 for Model Number MFT2976AEB03 Hi, my freezer is operating fine, but the refrigerator is no longer cool, i pulled everything apart and there was a lot of ice buildup around the evap, all the way up to the evap fan - freezing it stuck. Using a multi-meter i measured across the pins (diagonal to each other) and there were 14 volts DC. I purchased a new factory fan, installed it and it still doesn't run when i power on the fridge. After three days there's a large accumulation of ice buildup over the evap again (fan still not running). i melted the ice with a hair dryer looking for the de-icer but couldn't find it anywhere, i was able to see the de-icer on the freezer evap, but not the refrigerator evap. I then measured the impedance on the thermisistor to be a value of 2.75 kohms at room temperature (76 degrees), but was unable to find an impedance chart. What are the next steps i should take to fix this 2 year old fridge? Thanks!
Answer Hello HDT, the evaporator fan motors are a PWM type, (low voltage variable speed). Trace the red, tan and especially the yellow (PMW signal) wires back through the harness to where they enter the sidewall liner, look for any breaks or loose terminals. The fresh food compartment evaporator coil uses an air defrost using the fan motor. The thermistor tested correctly. Read More... Answered by AppliancePartsPros.com | Wednesday, July 17, 2019