Error code · Cooktop

LG Cooktop Code F3: Touch Pad Key Sensor

F3 appears on LG induction and radiant cooktops, and on ranges with a cooktop section. It is listed as a Touch Pad Sensor Key Error, and it is the same entry that appears for the range.…

Medium · inspection needed

(713) 597-5662

Code: F3
Appliance: Cooktop
Brand: LG
Warranty: 30-day workmanship

What F3 means

F3 appears on LG induction and radiant cooktops, and on ranges with a cooktop section. It is listed as a Touch Pad Sensor Key Error, and it is the same entry that appears for the range. A touch control that sees a key pressed for too long, such as from metal objects or water in prolonged contact with the touch area, can cause it. The owner sees F3, and the touch controls may stop answering or the cooktop may not heat.

Common causes of F3

Metal object resting on the touch controls
Water or spills sitting on the touch pad
Touch pad sensor key reading stuck
Control board input for the touch pad

✓ One safe check you can try

1. Remove any pots, utensils, or metal objects from the control area. 2. Wipe the glass touch area dry with a soft cloth once the cooktop is cool. 3. Switch the circuit breaker off for 30 seconds and back on. 4. If F3 continues, stop using the cooktop and arrange service.

! Why to stop there

If F3 returns with a dry, clear control area, we test the touch pad sensor circuit and its connection to the control board.
We do not open the control until the power is off and tested.
You see the finding and a written price first.

Opening a panel yourself does not automatically cancel a manufacturer warranty, but it can cause accidental damage, and some manufacturers set their own service conditions. Check your warranty terms, or ask us, before deciding.

→Same appliance

Other Cooktop codes

F33, F34LG Cooktop Codes F33 and F34: Front Induction Burner Sensor F51LG Cooktop Code F51: Griddle Sensor Reading F52LG Cooktop Code F52: Griddle Sensor Short Detected F56LG Cooktop Code F56: Griddle Heating Problem F59LG Cooktop Code F59: Griddle Not Heating Properly F62LG Cooktop Code F62: Sous Vide Temperature Sensor F69LG Cooktop Code F69: Sous Vide Heating Problem H5LG Cooktop Code H5: Hot Surface Indicator

F3F3 questions

Can water on the glass cause F3?

Water or metal resting on the touch area for a long time is a listed condition for this entry. Dry the glass, remove the object, and cycle the breaker before anything else.

Is this the same F3 as on my range?

Yes, it is the same entry. There is no separate cooktop-only meaning, so the same Touch Pad Sensor Key Error applies to ranges with a cooktop section.

Why do I need to switch the breaker off?

Turning the breaker off for 30 seconds lets the control restart and clear a stuck key reading. If it keeps coming back, the sensor circuit needs a proper test.

Book a visit

Still seeing F3?

A technician diagnoses it on site and gives you the price in writing before any work starts.

(713) 597-5662