[texastwostep]

We have a 2017 3661RL, and the High Pointe microwave/convection oven came standard. Due to inexperience with convection we only used the microwave part the first 6 months. Once we started using the convection, we got a bad odor. We were told by Keystone that it was manufacturing oils, etc. burning off. While the warranty was still in effect, we had the microwave replaced. The new unit in convection mode became hot enough to burn skin and then shut itself down, and still had the odor issue. Keystone offered to replace it again, but we did not have any faith that would fix the problem. We had an independent mobile repair take a look, and when they pulled the unit, the backsplash was melted and charred on the upper left side. The mobile repair went through the microwave with test equipment and determined that it was working as built. They trimmed the backsplash to below where it was melting and reinstalled. Did not fix it. I bought a Whirlpool unit and had it installed. That fixed the issue. To their credit, Keystone reimbursed me for three mobile repair visits and the cost of the new microwave.