Can metal rack be used in Convection combination mode?
In the combination mode, the microwaves are used for a short duration in the microwave mode. Therefore, a metal rack shouldn’t be used in Convection combination mode. The rack has no sharp edges and the gap between the rods of the rack is large enough to prevent sparking and to allow the microwave to pass through. The grill rack is only to elevate the food to come closer to quartz heater element for faster browning.