Yes it could be the defrost timer or the defrost heater or the defrost bi metal.
Locate the timer in the fridge side in the control panel.
With the compressor running turn the knob on the timer until the compressor shuts off.
The fridge will now be in the defrost cycle.
The defrost cycle takes about 20 to 25 minutes.
Check the drain pan to see if the fridge defrosted.
If the freezer defrosted you will need a defrost timer.
If it did not defrost then it is a problem with the heater or the bi metal.
You will need a meter to check these.
IF the fridge did not start back up you will need to turn the knob on the defrost timer again to start the compressor.
Here is a link to your fridge model RSWA278AAE.
Here is your defrost timer.
Here is the defrost heater.
Here is your defrost bi metal.  |