hi moved house recently,got a whirlpool induction oven /grill.can use the oven ok, losing the plot trying to make cheese on toast on the grill.turned it on put bread high up under grill bit turn grill to a highish setting ,put 2 pieces of bread on a tray under grill shut oven door i wait i wait and wait open oven door quick touch elements on grill warm , but bread stays white no point cutting the cheese,really fed up.any tips or is it broke, last owner of the house not very helpful thanks in advance