What F11 (Communication Error) Means
F11 indicates a communication error, per LG's range Help Library article - a fault between two of the range's internal control boards rather than a specific heating or sensor component.
Common Causes of F11 (Communication Error)
- Temporary communication glitch between control boards
- Loose or damaged connector between boards
- A control board itself has failed
🔧 One Safe Check You Can Try
Press the CLEAR/OFF key and try the original function again; if it reappears, cycle the circuit breaker for 30 seconds before trying once more.
⚠ Why You Shouldn't Go Further Than That
- If F11 persists after a breaker cycle, this is board-level electronics work that needs a technician - opening the range's control housing to inspect connectors yourself isn't a routine homeowner task.
Opening a panel to inspect or repair something yourself doesn't automatically cancel your manufacturer's warranty — but it can risk accidental damage, and some manufacturers do have specific service conditions. Check your product's warranty terms, or ask us, before deciding.