Error code · Cooktop

LG Cooktop Code F56: Griddle Heating Problem

Medium · inspection needed

Code: F56
Appliance: Cooktop
Brand: LG
Warranty: 30-day workmanship

What F56 means

F56 appears on LG induction and radiant cooktops and ranges with a griddle zone, and it reads Griddle Heating Error. The control found that the griddle zone is not heating the way it should. The owner sees F56, and the griddle may heat slowly, unevenly, or not at all, while the other zones continue to work. The code names the heating result and not a particular part, so we test the zone before deciding what is involved.

Common causes of F56

Griddle zone not reaching the expected temperature
Griddle sensor or its wiring
Control board output for the griddle zone

✓ One safe check you can try

1. Let the cooktop cool and remove the griddle plate and any cookware. 2. Leave the breaker off for 30 seconds, then turn it on again. 3. Replace the plate flat and level, and try the zone again. 4. If F56 returns, keep the zone off and arrange service.

! Why to stop there

If F56 returns, we test the zone output and the sensor reading together with the cooktop cold.
We check that the plate sits flat and makes proper contact.
You get a written price before any repair.

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

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 F3LG Cooktop Code F3: Touch Pad Key Sensor 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

F56F56 questions

Does F56 mean the griddle is broken?

It means the control found a heating problem in that zone. We cannot say which part is involved until we test the zone output and the sensor.

Why check how the plate sits?

A plate that does not sit flat can make poor contact with the zone, which changes how it heats. We check this along with the electrical readings.

Can I use the burners while F56 shows?

Other zones may still work, but we suggest having the griddle checked. A heating problem in one zone can also be a control matter we want to rule out.

Book a visit

Still seeing F56?

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

(713) 597-5662