Gas oven lights but temperature is inaccurate or fluctuates widely on Avanti gas range

Safety first: Turn off gas and power before removing burner parts. Allow oven to cool.

• Check with thermometer: Place an oven thermometer in the center of the oven and compare readings to the set temperature over 20–30 minutes.
• Clean burner: Remove the bake burner and clean ports with a soft brush or wire. Ensure all holes are clear for an even flame.
• Inspect flame: Reassemble, restore gas and power, and observe the flame. It should be blue and even. Yellow tips indicate incomplete combustion; adjust the air shutter on the burner if accessible.
• Check sensor/thermostat: On electronic models, test the oven temperature sensor resistance at room temp and at a known elevated temp. Replace if out of spec. On mechanical thermostat models, if calibration is far off and cannot be adjusted via the knob, replace the oven thermostat.
• Replace weak igniter: If the burner takes a long time to light or cycles erratically, replace the bake igniter.