Dale for Model Number DSS25PFMDWW Fridge side was running around 50 and freezer side right at 0,,pulled panel off of evaporator and was just almost froze up solid,, checked defrost heater and got 22 oms ,,,ran 12 hour test and all works good,, can regulate temps on both sides with no problem,just not sure its defrosting,,,what other parts can be tested?
Answer Dale, Since the defrost heater resistance is in range (18-20 O's) check for loose connections and make sure the seals on the end of the glass tube(s) haven't shifted or come off the ends. The freezer thermistors/temp. sensors WR55X10025 should have a reading of the 10K O's at room temp. (77 dgrs.F) and 62-63K O's at 0 dgrs. F. The defrost thermostat/hi-limit should have a "closed" circuit below 140 dgrs. F. If the wiring and components check OK and proper, then the main control board WR55X10942C on the back of the refrigerator would have a fault in the circuitry and need to be replaced. Read More... Answered by AppliancePartsPros.com | Tuesday, November 5, 2019