diplomat double oven

Need help on this oven cant find any info on it anywhere,when using the grill it works fine for 10 mins approx, then the for whole thing goes dead and unable to use any functions for 1/2 hr. i.e when cooled down. It did show an error code on display briefly think ed13 may have been eb13 but i cannot find any fault codes for this appliance. This is a typical howdens cheapo double oven. I have replaced cooling fan as that was very noisy. Any help with fault codes would be appriciated.