Cooktop Diagnostics
La Cornue Cooktop
La Cornue Cooktop
Error Codes
Meanings, severity levels, safe checks you can perform, and when to call a technician.
Enter the code shown on your cooktop display
Is it safe to keep using it?
Depends on code severity. Low/Medium codes often allow continued use, High severity requires immediate stop.
Can error codes be reset?
Some codes clear after power cycle. Persistent codes indicate underlying issues needing repair.
When should I stop using it?
Stop immediately for water leak codes, burning smell, or any High severity error.
Error Code Directory
Click any code for detailed troubleshooting steps
Low
Medium
High
Code
Meaning
Severity
Common Symptom
E0
Thermocouple Failure
High
The burner lights but gas is cut off within one second because the thermocouple produces zero signal, triggering the safety valve.
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E1
Pan Detection Error (Induction)
Low
The induction zone is selected and powered but displays E1 within seconds without beginning to heat.
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E3
Ventilation System Fault
Medium
The cooktop ventilation or downdraft fan does not start when selected or when the cooktop auto-activates ventilation.
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F1
Ignition Failure
Medium
The spark igniter cycles repeatedly but the burner flame never establishes, and F1 appears on the display.
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F2
Flame Sensor Malfunction
High
The flame appears briefly after ignition but the gas cuts out within one to three seconds as the sensor fails to confirm flame presence.
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F3
Gas Valve Fault
High
The affected burner either refuses to ignite despite correct control inputs, or in rare cases, cannot be extinguished via the control knob.
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F4
Induction Coil Overheat
High
The induction zone cuts power mid-cook when using high heat settings for extended periods, displaying F4.
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F5
Control Board Comm Error
High
Burner knobs or touch controls produce no response, or zones activate at incorrect power levels.
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F6
Power Supply Irregularity
Medium
The cooktop powers down unexpectedly during cooking, displaying F6 before going dark.
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