Error Detected May 1, 2026
Error Code

Bertazzoni Wall Ovens Error Code E3

Error code E3 indicates a temperature sensor malfunction or communication failure between the oven's control board and temperature detection system. This error prevents the oven from accurately monitoring internal temperature and will disable cooking functions until resolved.

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

Signs

7
  • 01
    • Oven will not heat or initiate cooking cycles
  • 02
    • Display screen shows E3 error code
  • 03
    • Oven beeps intermittently or continuously
  • 04
    • Unable to set temperature or select cooking modes
  • 05
    • Heating elements do not activate despite control panel input
  • 06
    • Oven may shut off unexpectedly during preheat
  • 07
    • Control panel becomes unresponsive to temperature adjustments
Why it happens

Possible Causes

9
A
• Faulty temperature sensor (RTD probe) located in oven cavity
B
• Loose or corroded electrical connections between sensor and control board
C
• Damaged wiring harness connecting temperature sensor to main control unit
D
• Control board malfunction or software error
E
• Temperature sensor circuit board failure
F
• 120V/240V supply voltage fluctuations affecting sensor readings
G
• Buildup of grease or food debris on sensor element
H
• Failed thermal relay or sensing circuit on main PCB
I
• Improper voltage regulation in sensor circuit due to North American electrical variations
DIY — No disassembly

Safety Checks You Can Do

9
  1. 1
    • Turn off the wall oven's dedicated circuit breaker for 60 seconds, then turn it back on to perform a complete system reset
  2. 2
    • Check that the oven's dedicated 240V circuit breaker has not tripped; reset if necessary
  3. 3
    • Allow the oven to cool completely for at least 30 minutes before attempting to restart
  4. 4
    • Verify the oven interior is clean and dry; remove any debris, food particles, or grease near the back wall where the sensor is typically located
  5. 5
    • Ensure oven racks are properly seated in their support slots and not blocking airflow
  6. 6
    • Review the control panel display after reset to see if error code E3 clears
  7. 7
    • Check that all control panel buttons are functioning and not stuck
  8. 8
    • Verify proper voltage supply to the oven by checking if other kitchen appliances on the same circuit are working normally
  9. 9
    • Do not attempt to access, clean, or remove the temperature sensor yourself as this requires trained technician expertise
Always unplug the appliance before performing any physical check. These are visual/external checks only.
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