Slow to heat Haier Convection Oven

you are correct . it is the convection . the fan blows the air around and away from the elements ,when that is happening the elements can never get hot enough to glow , as the oven gets hotter and at some point the air is so hot even with it blowing the elements will start to get red ... this is good because todays elements are thin and cheep and melt easy so the fan keeps the heat away from them and the elements last longer ...... if this answer helped please rate it a 3 or 4 stars .this high rate will help keep me in the paid answer department ... thank you