Bertazzoni Ovens F30 Error: Temp sensor open circuit
What Does F30 Mean? F30 is the temperature sensor open-circuit fault code on newer Bertazzoni Professional Series wall ovens with TFT digital control displays. It tells you the oven’s RTD probe is either disconnected or has failed open — the control board is receiving no valid resistance signal from the temperature sensor and has shut […]
Quick Assessment
Answer to continue safely
Is it safe to keep using?
No. The oven cannot regulate temperature with a disconnected or failed probe. Discontinue use until F30 is resolved — schedule service within a few days to prevent the fault from progressing to control board damage.
Can I reset the code?
Yes. A 2-minute circuit breaker power-cycle clears F30. If the code returns on the next use, the probe connector is still unseated or the probe has failed and requires replacement.
When to stop immediately?
Stop if you notice: F30 returns on every power-up even with connector confirmed seated, Temperature display shows a fixed impossible value that does not change during heating.
Symptoms You May Notice
Oven shuts down to prevent unsafe operation and refuses to heat
The oven stops heating immediately or never begins heating after F30 appears, because the control board interprets a disconnected or open-circuit probe as an unsafe condition requiring a protective shutdown.
Temperature display shows an absent or impossible fixed value
The cavity temperature reading on the TFT display may show a blank, a dashes indicator, or a fixed value that does not change as the oven heats — all indicating the probe is not delivering a valid signal.
F30 may appear immediately on power-up if the sensor connector is disconnected
If the probe lead connector was accidentally disconnected during a service visit or rack removal, F30 will appear the moment the oven is powered — it is worth checking the connector before assuming probe failure.
Possible Causes
RTD probe failed open — resistance outside valid range
The temperature sensor probe resistance has moved far outside the approximately 1080–1100 ohm room-temperature specification, indicating the probe element has fractured or degraded.
Requires ProfessionalProbe wiring connector disconnected or corroded at cavity wall
The connector joining the probe lead to the control board wiring has pulled off or corroded at the oven cavity wall, breaking circuit continuity and producing the same open-circuit reading as a failed probe.
DIY PossibleSafe Checks You Can Do
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1
Check the probe connector at the oven cavity rear wall
With the oven completely powered down at the circuit breaker, open the oven door and look at the rear wall for the probe connector. Confirm it is fully seated and that no wires are visibly damaged or disconnected. This takes 2 minutes and resolves a significant proportion of F30 faults.
On newer TFT-display Professional Series wall ovens the probe connector is accessible without any panel removal — it is a small two-pin connector typically located in the upper rear of the cavity.
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2
Power-cycle after checking connector
After confirming or reseating the connector, switch the circuit breaker off for 2 minutes and restore power. Attempt a bake cycle at 350 °F and monitor whether F30 returns — if it does not appear in the first 15 minutes the connector was the cause.
If F30 returns with the connector confirmed seated, the probe itself has failed and requires replacement by a service technician.
When to Call a Professional
Contact a qualified technician if:
- F30 returns immediately after a power-cycle with the probe connector confirmed seated
- Probe resistance measured by a technician is open-circuit or far outside specification
- Connector shows visible corrosion or burn damage
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