Ensure that all dials are in the "Off" position, and turn off the oven if possible.
Locate the oven breaker in your fuse box. The oven may have its own dedicated breaker, or may be connected to the "Kitchen" breaker.
Turn off the breaker, and allow it to remain off for more than 1 minute.
Turn the breaker back to the "On" position to complete the hard reset of the Amana convection oven.