It is electric and brand new and we have had it a week. We made the best of it Christmas eve and then found the manual. It was installed by an electrician but we did not know about the screws for a tilt of oven door.
It takes two to insert the screws for the tilting door and I will just have to get electrician back. I read manual and the off and on sounds are "part of the thermal" heating system.
If this is not answer to problem, I will contact Amana since unit is in fact brand new.
thanks for your help, XXXXXXXXXXX
Home Appliance Technician
5 years+ in home service own and operate my own in home appliance repair company