This oven is under warranty. Is the following behavior normal?
preheat oven to 300 F. "Preheating" message goes away. Wait 15 min for my thermometer to settle. My Thermometer says 290 F.
All is well.
Now press oven -> Bake -> 400F -> Start.
Wait an hour. Display panel says 380 F Preheating. My Thermometer says 380 F.
This happens with the upper and lower ovens.
I think the oven should not stay in the preheat mode. So before I call for a service call I would appreciate any comments on whether this is really a problem.
Thanks in advance,
Dwight