Oven Diagnostics
La Cornue Oven
La Cornue Oven
Error Codes
Meanings, severity levels, safe checks you can perform, and when to call a technician.
Enter the code shown on your 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.
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.
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E0
Control Board Init Error
High
No display, no response to controls — the oven appears to have no power.
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E1
Board Self-Test Failure
High
The oven abruptly stops heating and all functions cease during a cooking cycle.
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E1
Heating Element Fault
Medium
The vault cavity takes much longer to reach set temperature or has noticeable hot and cold spots.
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E3
Conv Element Open Circuit
Medium
Food remains undercooked or cooks much slower than expected in convection mode.
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E4
Ventilation System Fault
Medium
Food comes out steamed rather than roasted, and visible condensation forms inside the cavity.
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E5
Cooling Fan Failure
Medium
The top, sides, or back of the oven feel much hotter than usual during operation.
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E6
Moisture Sensor Failure
Low
Food is sometimes over-dried or under-dried, with unpredictable moisture in the finished product.
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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.
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F1
Temp Sensor Open Circuit
Medium
The vault oven cavity remains cold after starting a cooking cycle.
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F2
Oven Temp Sensor Short
Medium
The oven begins preheating but shuts down within seconds, displaying the F2 code.
View
F2
Temp Sensor Short Circuit
Medium
The vault oven begins heating but shuts down within seconds of starting.
View
F3
Oven Overtemperature
High
The outside surfaces of the oven, handles, and surrounding cabinetry feel unusually hot to touch.
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F3
Overtemperature Condition
High
The heavy cast-iron exterior and surrounding surfaces are significantly hotter than normal.
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F4
Conv Fan Motor Failure
Medium
Food cooks unevenly in convection mode because the fan is not circulating hot air inside the cavity.
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F5
Control Board Comm Error
High
Buttons and knobs produce no response from the oven, which appears dead.
View
F5
Control Board Comm Error
High
All buttons, knobs, and settings produce no response from the vault oven.
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F7
Door Lock Failure
Medium
The oven door is either stuck in the locked position or refuses to lock for self-clean.
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F8
Steam Generator Fault
Medium
The vault oven produces no visible steam when steam cooking mode is selected.
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F9
Door Latch Switch Fault
Low
The self-clean function will not initiate because the door switch cannot confirm closure.
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