My la cornue oven not heating, turn 1st knob to function desired and then temperature knob to desired temp but oven does not heat up

First thing should be to make sure the top selector switch is not set to the optional Pizza element.

Make sure the power to the unit is OFF. Also keep in mind that the following tests should be done by a qualified appliance specialist. To find one near you, contact the La Cornue Service Center @ 877-522-6768

Is this the first time using the oven? If so, make sure the overall power to the range is 240 volts. This can be checked at the main terminal block.

If your model has three indicator lights and the red light is illuminated, then it is likely the hi-limit thermostat has tripped and you will need to reset it. The reset switch is located underneath the cycling thermostat. To access this, you will need to remove the front fascia. Please note: The original safety thermostat is no longer available. Use current safety thermostat (reference: 06ELTS01). If your model has only two indicator lights and the red light is illuminated, that means the oven is heating up. If the red light is not illuminated when the thermostat is set at the desired temperature, then check the hi-limit thermostat.

Power relay/contactor on the back of the unit should be checked. It