LG Dishwasher Error Code F

The F indicator means the turbidity sensor is actively measuring the soil level in the wash water. This is a normal status display that appears at the beginning of an automatic wash cycle. It is not a fault code and does not indicate any malfunction. After up to 5 minutes of sensing, the display will switch to showing the estimated remaining cycle time.

Yes, it is completely safe to run the dishwasher when F is displayed. The unit is operating normally and is in an active measurement phase. There is no risk to the appliance, the dishes, or the surrounding area during this status display.

There is no repair needed for the F indicator, so there is no associated cost. Because F is a status display rather than a fault code, no parts or service calls are required. If the display never transitions away from F after the 5-minute sensing window, that could suggest a sensor issue worth investigating, but the indicator by itself is not a billable problem.

No action is required when F appears. The dishwasher is functioning exactly as designed, using its turbidity sensor to assess water clarity before committing to a cycle duration. Simply allow the cycle to continue and the display will update on its own within 5 minutes.

A reset is not necessary and will not improve anything since F is not an error condition. Resetting the dishwasher would simply restart the cycle and cause the F indicator to appear again as the turbidity sensor begins a new sensing phase. The best approach is to let the cycle proceed normally.