The refrigerator stopped cooling properly. The temperature reading on the exterior door is 53 degrees. We have a thermometer inside the refrigerator that reads about 61 degrees. Is it just a sensor that needs to be replaced? Or which parts do I need? The number I have listed is what is on the refrigerator door. The manual says RB1944SL. Which number do I use to look up parts?
You will want to pull the rear cover inside the refrigerator compartment and check to make sure that the coils are not impacted with ice and not allowing proper airflow. If they are impacted with ice then you will want to test the defrost thermistor (which in a lot of cases is the issue) and check the defrost heater. You will use model number RB1944SL to look up the parts.
I would like to ask the resistance of sensor when we pull it out from the unit.
Answer Hello Dan. At room temperature(75 dgrs F.), your thermistor should read 5.1k ohms.
A few days ago our refrigerator started making a humming noise.. And noticed some ice build up.. Would like to know the cause... Thank you
It sounds like you may have some type of defrost failure. You will want to pull the rear cover of the section where you are seeing ice build up and check to make sure that the evaporator is not impacted with ice. If it is then you will need to check the defrost sensors and heater to ensure them being good. If they are bad then replace them. If they are good then you w ill need to replace the control board.