** defrost should be twice per day (approx every 12 hours) **
Your fridge model uses an 'adaptive defrost control' (ADC for short). There is no set defrost period or duration with them as explained at the following link:
- How does a frost free refrigerator's defrost system work?
LINK > www.appliance411.com/links/jump.cgi?ID=658
** The last technician changed the defrost mode to last 9 minutes instead of 20 **
I don't know how he'd do that. I wasn't aware it was even possible since it is controlled by the ADC's chip and dependant on several variables.
** service technician told us that 2-3 weeks is about how long we should expect the freezer to keep brand-new (unopened) food for. **
You can read some guidelines at this link although for the freezer a dedicated freezer (not refrigerator/freezer) would keep foods best.
- Food Storage: Refrigerator and Freezer
LINK > http://hgic.clemson.edu/factsheets/HGIC3522.htm
** [after defrost] does not go back [below] 0 for 60-80 minutes. **
What are the compressor and fans doing at this time?
Are you certain it was in "defrost"?
If so, was the evaporator coil fully defrosted?
What is the frost pattern like on the evaporator coil *once it has been running again* for at least a short while?
Dan O.
www.Appliance411.com/parts/?ref411=Kenmore+Fridge
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