Can you help I have a Falcon 1092 Deluxe Dual fuel range cooker and the LH oven has stopped working. I have had the cooker for three years but have never used the LH Oven

I used it once over Xmas and it has now stopped working. The oven temperature knob does not light up, the fan does not move either and does not heat up

Any Suggest on what might be wrong

Neil W, December 2012