Purchased the MHEC1737 in January. Since day one the convection options and airfry simply do not heat up to the desired temp. The microwave portion works perfect. Lg indicated to put a temp sensor that you can use in the oven inside the microwave to see what temp the convection reaches. Regardless the temp convection is set to, it won’t go above the temp of 200 and this is after 1hr. I purchased this in the states and took it with me to canada and now unfortunately LG will not help with the service as I need to be in the USA.