Someone please help. I have just moved into a house with a 90 cm wide Indesit cooker gas top electric oven. on the dial it at 12 o1clock is of. at 2 am a box shows a line top and bottom and a light symbol. at 4 am it shows a box with a a line just at the bottom. at 6pm an empty box. at 8 pm it shows a box with a line at the top. at 10pm it shows a box with a w and a G beneath it. can some one please explain there useage?.