I am getting error8 on my brand new Smeg top of the range Smeg oven. Wha Tia the cause of this?

SOURCE: maytag gemini range

The element cannot "ARC" to the stove. Sounds like a differnt problem.

SOURCE: microwave oven exhaust fan

The Intake is gentle. It is not designed to have a great pull of air from the Cook Top.

TEST: Turn Exhaust Fan ON
Hold a sheet of your printer paper up to the INTAKE GRILLE (bottom). Will the sheet of paper stay? Held up only by the suction? If it does, Air Intake is OK.

SOURCE: SMEG A 2.5 Range Oven

sound like the TOD to me. have a technician replace it.

SOURCE: Tappan electric range, brand new - top heats up

Call the manufacturer and ask them what to do, they can advise you as to what to expect when unit operates and possible cause. Most ranges on broiler will have some heat transfer to top, but this sounds extreme

SOURCE: Problems with the oven heating up on Smeg CC92 MFX5 range cooker

instalation wiring may be criss crossed if under warranty get them out to fix it.