check for 24 volts going into your ignition module. If 24 volts is present, you have a failed module (usual suspect) If no 24 volts, check for incoming power to temp controller (should be line voltage, 110 or 240) If correct voltage is present, check the relay on board see if it closes when oven calls for heat. If the relay does not respond I would change the temp controller, probe and board as a set. The probe on my truck showed me 70 ohms @ approx 90 degrees (wrapped it in my hand for a couple minutes) so yours should be within range. Hope this helps