Temperature control issues in home oven

Temperature control issues in home oven

I am using a LG Convection Microwave oven 32L for home use. For baking a regular white loaf, I use 180 degree Centigrade. The top gets very hard. I have heard convection ovens with fan distribute heat evenly so one can reduce the recipe temperature for 25 degree if using a fan based convection oven. So do you think I should bake at 155 degree C instead of 180. Does this formula work?

In some recipes where it asks for 220 Degree c, my item almosts gets as hard as stone and very dry and nearly burns. I have used meat thermometer to check if the oven thermostat has gone bad but no its ok, a service technician also checked.

Also in this oven, if I use grill mode at top, will I be able to get a good bake if after every 5 minutes I keep rotating and turning the pan? I guess grill modes are to roast chicken and it may again get very hot. The inside of my bread is ok but top very stony. Also if I choose to bake at 155, should I increase baking time or I will nullify the purpose.

Source: Fresh Loaf