Error Detected May 1, 2026
Error Code

Bertazzoni Wall Ovens Error Code Er01

Er01 indicates a temperature sensor malfunction or communication error between the oven's control board and temperature sensing component. This error prevents the oven from accurately monitoring cooking temperature and halts normal operation for safety.

Quick Diagnostics
Signs 6 identified
Possible Causes 7 listed
Safety Checks 9 steps
If unsure, stop using the appliance and contact a certified technician immediately.
What you notice

Signs

6
  • 01
    • Oven fails to heat or displays inconsistent temperature readings
  • 02
    • Digital display shows Er01 code and oven locks out
  • 03
    • Preheat cycle does not complete
  • 04
    • Cooking functions become unavailable
  • 05
    • Control panel may become unresponsive to temperature adjustments
  • 06
    • Oven beeps repeatedly or displays flashing error message
Why it happens

Possible Causes

7
A
• Faulty temperature sensor (RTD probe or thermistor) in the oven cavity
B
• Loose or corroded wire connections between sensor and control board
C
• Damaged wiring harness in the oven chamber due to food debris or moisture
D
• Control board malfunction preventing proper sensor signal processing
E
• Power supply issues affecting 240V or 120V supply to sensor circuit
F
• Thermal sensor positioned incorrectly or obstructed by racks or cookware
G
• Moisture accumulation causing sensor circuit short or corrosion
DIY — No disassembly

Safety Checks You Can Do

9
  1. 1
    • Turn off the circuit breaker supplying the wall oven for 60 seconds, then restore power to reset the appliance
  2. 2
    • Verify the dedicated 240V circuit breaker (or 120V depending on model) is fully engaged and not tripped
  3. 3
    • Allow the oven to cool completely for at least 2-3 hours before attempting to use again
  4. 4
    • Inspect the oven interior for any food debris, spills, or moisture and carefully clean if safe to do so
  5. 5
    • Ensure all oven racks are properly seated and not blocking the temperature sensor location
  6. 6
    • Check that no cookware or items are touching the back wall where the sensor probe is typically located
  7. 7
    • Review the control panel display to confirm Er01 code persists after reset
  8. 8
    • Verify the oven door closes fully and the door latch engages properly
  9. 9
    • Consult your user manual to identify the exact sensor location for your specific USA model
Always unplug the appliance before performing any physical check. These are visual/external checks only.
Still having trouble?

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