Bertazzoni Ovens F3 Error: Open temp sensor circuit
What Does F3 Mean on a Bertazzoni Oven? F3 on a Bertazzoni oven indicates an open temperature sensor circuit. The oven’s electronic control board continuously monitors the resistance of the temperature probe inside the cavity; when that resistance reading falls outside the valid window — signalling a broken wire, disconnected connector, or failed probe — […]
Quick Assessment
Answer to continue safely
Is it safe to keep using?
No. Without a working temperature sensor the oven cannot regulate heat safely, risking uncontrolled overheating of food and the oven cavity.
Can I reset the code?
Yes. A breaker reset may clear a transient glitch, but F3 caused by a broken probe or wiring will return as soon as the oven attempts to heat.
When to stop immediately?
Stop if you notice: F3 returns immediately after every power-cycle., The oven overheats or produces burning smells without shutting off..
Symptoms You May Notice
Oven will not heat or stops mid-bake
The oven fails to reach the set temperature or cuts out during cooking, with F3 appearing on the display and the control beeping.
Continuous beeping from the control panel
The electronic oven control emits repeated beeping tones when F3 is active, alerting the user that a safety-critical sensor fault has been detected.
Possible Causes
Broken sensor probe wire
The thin lead wire from the temperature probe to the control connector has cracked or pulled free, creating an open circuit the board reads as F3.
Requires ProfessionalSensor probe out of range
The probe's resistance has drifted outside the valid band due to age or heat damage, causing the board to declare an open-circuit fault.
Requires ProfessionalSafe Checks You Can Do
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1
Power-cycle at the breaker
Switch off the oven circuit breaker for 60 seconds, restore power, and attempt to set a temperature. If F3 clears and the oven heats, the fault was transient.
If F3 returns within seconds of the oven attempting to heat, the sensor or wiring is physically damaged.
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2
Visually inspect the probe connector
With the oven completely off and cool, look inside the oven cavity near the back wall for the probe tip. Check whether the connector behind the back panel has come loose — do not pull wires.
Do not attempt this inspection while the oven is hot or powered.
When to Call a Professional
Contact a qualified technician if:
- Sensor probe resistance is outside the manufacturer's specified range.
- Wire insulation to the probe is cracked, melted, or disconnected.
- F3 persists across multiple reset attempts.
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