Mark for Model Number RF18HFENBSR/AA the upper evaporating unit keeps freezing up causing the temperature in the fridge to rise. I have replaced the temperature sensor and the heating unit, but it is still freezing up. any suggestions as to another cause such as the fan (which does not make any noise) or anything else.
Answer Hello Mark, if the fan motor is operating, you have replaced the defrost heater and the defrost thermistor which is secured to the evap coils, the evap coil drain is not blocked, the evap cover is in place, the ref door is closing and the gasket is sealing, and the evap coil is not defrosting then the main control board DA92-00420T which controls the defrost cycles should be replaced. Read More... Answered by AppliancePartsPros.com | Friday, June 4, 2021