Why on Whirlpool gas range model SF395LEEB0 top burners have fuel supply, but not the oven? The oven igniter rid dies glow.

SOURCE: Maytag Gas Oven top burner does not turn on when in bake mode

That is the way it works. If you have an convection oven then they both work in bake mode but they alternate between the two.

SOURCE: Whirlpool Super Capacity 465

I have the same problem intermittently on my Super Cap 465. After reading the following quote from another site, "There have been cases where radio waves, electronic signals and sometimes something as strange as dimmers in lights have caused some weird problems with some computer panels in stoves like these", I tries turning off lights that might be on the same circuit and wouldn't you know it, the oven igniter circuit worked.

SOURCE: whirlpool gas oven sf302

Replace the glow bar ignitor.

SOURCE: Model MGR4452BDB range top burners work but oven

The igiter is bad and needs replaced . The glow bar has a crack and is not getting hot enough to open the oven valve allowing it to ignite.

SOURCE: ka gas range the glow bar comes on but it takes

Hi, this sounds like a weak igniter, it would have to be a gas oven and the symptoms usually are: takes longer than normal to ignite the burner, may or may not smell gas in the oven, if it does light the burner, there may be delayed ignition (pop), does not maintain set temperature or burner does not come on fully, eventually won't heat at all. On gas ovens, a glo igniter is like a light bulb, the more you cook, the faster it wears out. Bottom line, needs to be replaced. Good luck.