Range Hood Diagnostics
La Cornue Range Hood
La Cornue Range Hood
Error Codes
Meanings, severity levels, safe checks you can perform, and when to call a technician.
Enter the code shown on your range hood 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
Grease Filter Sensor Blocked
Medium
The control panel displays E0 or a filter indicator light illuminates to signal a servicing requirement.
View
E1
Duct Airflow Restriction Detected
Medium
The fan operates at full noise and power but cooking smoke and steam billow back into the kitchen.
View
E2
Control Panel Unresponsive
High
Pressing any button on the control panel results in no change — no beep, no LED feedback, no function change.
View
F1
Fan Motor Failure
High
Selecting any fan speed produces no airflow or motor sound — the blower does not spin.
View
F2
Speed Controller Malfunction
Medium
Speed adjustments from the control panel produce no change — the fan stays at a single fixed speed regardless of selection.
View
F3
LED Lighting Circuit Fault
Low
Pressing the light button produces no illumination from any of the hood's LED downlights.
View