Oven not heating on cannon cooker.mod 10430G DF Prof?

After losing my power supply whilst the oven was on, thinking we had too many appliances running at one time, I reset my mains trip but the cooker switch had not tripped. Because the fan was running on the oven I assumed the oven was still working but it had not been. The top oven is still working as normal but the main oven is not. The cooker is not yet 4 years old. Your views would be appreciated! Thanks.