Convection Oven Diagnostics

La Cornue Convection Oven
Error Codes

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

Enter the code shown on your convection oven 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

F4 F5 F7 F9 E0 E1 E5 F1 F2 F3

All Codes

E0 E1 E3 E5 F1 F2 F3 F4 F5 F7 F9

Error Code Directory

Click any code for detailed troubleshooting steps

Low Medium High

Code Meaning Severity Common Symptom

E0 Control Board Init Error High The oven shows no signs of life or immediately displays E0 when power is applied. View E1 Board Self-Test Failure High The oven abruptly stops heating and all functions cease during a cooking cycle. View E3 Conv Element Open Circuit Medium Food remains undercooked or cooks much slower than expected in convection mode. View E5 Cooling Fan Failure Medium The top, sides, or back of the oven feel much hotter than usual during operation. View F1 Oven Temp Sensor Open Medium The oven cavity stays cold after selecting a temperature and starting a cycle, even after 10 or more minutes. View F2 Oven Temp Sensor Short Medium The oven begins preheating but shuts down within seconds, displaying the F2 code. View F3 Oven Overtemperature High The outside surfaces of the oven, handles, and surrounding cabinetry feel unusually hot to touch. View F4 Conv Fan Motor Failure Medium Food cooks unevenly in convection mode because the fan is not circulating hot air inside the cavity. View F5 Control Board Comm Error High Buttons and knobs produce no response from the oven, which appears dead. View F7 Door Lock Failure Medium The oven door is either stuck in the locked position or refuses to lock for self-clean. View F9 Door Latch Switch Fault Low The self-clean function will not initiate because the door switch cannot confirm closure. View