Yes

Is the convection fan operating/running during both non-convection and convection cycles?

It is normal operation for the convection fan:

• To operate duing preheat for both non-convection and convection functions.
• Turn off when the oven door is opened.

The convection fan will come on approximately five (5) minutes into an oven fuction on all Gas convection models:

• During preheat or when a convection cycle is selected.