Sub-Zero Oven Temperature Calibration Issue

Range oven temperature is consistently too hot or too cold compared to the set temperature.

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Possible Causes

Out-of-calibration oven sensor, Control calibration offset, Poor rack placement or airflow obstruction

How to Fix / Troubleshooting

Safety first: Use heat-resistant gloves when placing or removing thermometers from the oven.

Steps:

  • Verify with thermometer: Place an accurate oven thermometer in the center of the oven. Preheat to 350°F and allow 20–30 minutes to stabilize. Compare actual temperature to the setpoint.
  • Adjust calibration: Many Sub-Zero/Wolf ranges allow temperature offset adjustment in the user settings. Follow the manual to increase or decrease the displayed temperature to match actual readings.
  • Check sensor: If the offset required is more than ±35°F, test the oven temperature sensor resistance and replace if out of specification.
  • Ensure proper airflow: Avoid blocking convection fans or vents with large pans or foil, which can cause uneven heating.

Note: Always test multiple cycles to confirm consistent performance after adjustments.

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Repair Difficulty

Easy 2/5

Required Part

Oven Temperature Sensor (RTD)
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