Have a PVM9179DF1BB in our coach. Have a few things that DW does not like about the menu system, but for the most part it works well.
If you have been using convection, you need to cool it down before you can use the microwave. As in, hang the door open for a few minutes. We sometimes get "sensor errors" when reheating soup or other items with high moisture content. Not sure if it is endemic to all of that model, or just ours. Is not enough of a bother to take it down and send it in for repair.
DW wants to replace with Advantium, but that lists for about $1200 so will be a while.
EDIT: It is on a 20 amp circuit. Check your power/wiring.
