Rangetop Diagnostics

La Cornue Rangetop
Error Codes

Meanings, severity levels, safe checks you can perform, and when to call a technician.

Enter the code shown on your rangetop 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.

Most Common Codes

F1 F2 F3 F5 E0 E1 E2

All Codes

E0 E1 E2 F1 F2 F3 F5

Error Code Directory

Click any code for detailed troubleshooting steps

Low Medium High

Code Meaning Severity Common Symptom

E0 Safety Valve Stuck Closed High Turning any knob produces the spark sequence, but no gas reaches the burner — there is no smell of gas and the spark cannot light anything. View E1 Thermocouple Circuit Open Medium A burner ignites normally but extinguishes 3–10 seconds after releasing the knob, as the safety system cannot confirm flame presence. View E2 Control Knob Encoder Fault Low Rotating the control knob produces unexpected changes in flame height — small turns cause large power jumps or the burner does not respond at all. View F1 Ignition Module Failure Medium Turning any burner knob produces no clicking spark sound from any igniter electrode on the rangetop. View F2 Gas Pressure Abnormality High Burner flames are noticeably smaller or larger than normal, not adjusting properly across the power range. View F3 Burner Flame Instability Medium The flame on one or more burners visibly pulses, sputters, or changes height erratically during operation. View F5 Simmer Control Malfunction Low Turning the simmer burner knob to its low-power range produces no change in flame height — the burner stays at a fixed output. View