A:Answer With our convection microwaves, when the door is opened immediately following convection cooking, the unit will display “HOT”. If a higher temperature was used (or broil), the oven may need to cool briefly before it will accept a microwave program. -- However, if the microwave continues running on it’s own, that would not be normal operation. In that case, we recommend unplugging the unit for a few minutes to reset the electronics. If it continues, we recommend seeing page 23 of the Owner’s Manual for warranty information. The Owner’s Manual can be viewed at the bottom of the Features tab on the product page of the Best Buy website. Lauren@GEAppliances