Defrost Control WR9X482

Initially I talked to local refrig repair man who told me to defrost the refrigerator and freezer for 6 hrs as well as to use a hot air dryer on the back wall of the freezer to defrost the freezer coils. I defrosted the refrigerator and freezer for twelve hours by unpluging it from the wall and using a fan to blow warm air into the frig/freezer. After 12 hrs., about 1 gallon of water collected in the pan below the refrigerator and I thought it was long enough.(I had defrosted the refrig well. The collection of water in the pan told me that the drainage tubes from the freezer and refrig compartments was working well and not obstructed. This made me think tthat one of three parts on the "no Frost" cycle may be defective and so ordered the Control, Thermostat and Heat assembly from PartSelect for our refrig/Freezer.
They have the most reasonable prices.
I then plugged in the refrigerator and monitored the temp. in the freezer compartment every twelve hours for the next three weeks and noted the temperature in the freezer compartment varied from o degrees to 10 degrees which is what it should do. I also watched for any frost build up in the freezer compartment and to date have not seen any.
The temp in the refrigerator compartment is as it should be. My impression is that all components are actually working as they should now and that the cause for our problem with the Hotpoint was due to the fact that the door was left open overnight. We will try to avoid doing that again.
I am holding the parts for one more week. If the refrig coninues to function normally till then, I plan to return the parts to partselect.com because they said I could do so.