Dual Fuel Range Diagnostics

La Cornue Dual Fuel Range
Error Codes

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

Enter the code shown on your dual fuel range 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

F9 E0 E1 E2 E3 F1 F2 F3 F4 F5

All Codes

E0 E1 E2 E3 F1 F2 F3 F4 F5 F7 F8 F9

Error Code Directory

Click any code for detailed troubleshooting steps

Low Medium High

Code Meaning Severity Common Symptom

E0 Board Communication Error Medium Parts of the digital display are blank, show incorrect data, or the display works intermittently. View E1 Gas Valve Relay Failure High The oven igniter glows but gas never flows to the burner because the relay won't energize the gas valve. View E2 Convection Fan Motor Fault Low Food cooks unevenly with hot spots and cold spots, or one side of dishes browns significantly more than the other. View E3 Cooling Fan Failure Medium The area around the control knobs and digital display feels abnormally hot during or after oven use. View F1 Oven Temp Sensor Open Medium The oven cavity remains cold after setting a temperature and pressing start, with no warmth detected even after 10+ minutes. View F2 Oven Temp Sensor Short Medium The oven begins its preheat cycle but shuts down within seconds, displaying the F2 code. View F3 Oven Overtemperature High The outside surfaces of the range, including handles and surrounding cabinetry, feel unusually hot. View F4 Sensor Out of Range Medium Recipes that previously cooked correctly now produce inconsistent results despite using the same temperature settings. View F5 Control Board Failure High Pressing any buttons or turning knobs produces no response — the range appears dead despite having power. View F7 Door Lock Fault Medium When starting a self-clean cycle, the oven fails to engage the door lock and displays the F7 error instead of proceeding. View F8 Oven Igniter Failure High You may notice a brief gas odor when the oven attempts to light, followed by the F8 error as the safety valve closes. View F9 Door Latch Circuit Fault Medium The oven behaves as if the door is open when it is clearly shut, refusing to start or maintain heating cycles. View