A:AnswerThat is weird. You will need to ask the manufacturer if still under the warranty. I looked at the documentation with the oven and I don't see how you could have turned it off.
A:AnswerMy installer said 18 to 24 inches. In my experience, 18 is too close. The instructions has the recommended distance. You can view them in the description.
A:AnswerIt’s not too heavy...a little bit more heavy than a standard microwave of that size. With the stove out of the way I was able To lift it myself and attach it to the wall. You’re still gonna need a second person to screw in the top bolts.
A:AnswerThe door opens about a half inch out, so I don't think you would have enough clearance since your cabinets would be flush with the front of the microwave.
A:AnswerCheck to see which way the fan is actually pointing. If there is a wall behind, you don't want to vent into the wall. I had thought the instructions said which way to point the fan for internal use.