Robert K Chicago , IL May 06, 2017 Not defrosting I purchased main control board/defrost limiter thermostat and defrost heater I only needed the defrost limiter thermostat fairly easy to do simple tools needed. I would rate this job as a 6 or 7 on a scale of 10 10 being most difficult the only thing that took time was defrosting the evaporator I used a small steam cleaner worked well Read More... Do-It-Yourself Rating: Repair Time Estimate: 1-2 hours Tools: Nut Drivers, Pliers