LG Oven Error Code F24
On steam-equipped LG ovens, the steam heater ran but the steam thermistor circuit stayed open, so the control stopped the steam function. Tank and scale issues are worth ruling out first, but the sensor itself is buried in the steam generator and is a service part.
Also shown as: F-24
Common causes
- Steam generator thermistor has failed open
- Steam sensor connector loose or corroded
- Scale buildup around the steam sensor from hard water
- Failed control board steam sensor circuit
What to check, in order
- Press CLEAR/OFF and reset power at the breaker for a few minutes, then run a steam cycle again to see whether the code returns.
- Empty and reseat the water tank, and confirm it is filled with clean water; an empty or badly seated tank can stop the steam heater sequence the sensor monitors.
- If the model supports it, run the descaling cycle; heavy scale around the steam sensor can throw its readings off.
- The steam thermistor itself sits inside the steam generator assembly and testing or replacing it is a professional repair.
Clear the code and test
- Fix what the checks above found first. Clearing the code without fixing the cause only brings it back.
- Plug the appliance back in and restore its water supply if it has one.
- Run the shortest programme and watch the point where the code appeared before.
- If the programme finishes with no code, the fault is cleared. If the code returns, write it down before calling a technician — it speeds up the diagnosis.
When to call a professional
This code usually points to a faulty part, wiring or the control board on a LG oven. Run the checks above to rule out the simple causes, then book a technician — and book one straight away if any of these apply:
- The code comes back after you have run the checks and a test cycle.
- You smell burning, see sparks or scorch marks, or the breaker trips.
- Water is leaking and you cannot stop it at the tap.
- The fix needs panels opened beyond what your manual describes, or a part tested with a meter, and you are not set up for that.
When you call, give the brand, the code F24, your model number (on a label inside the door or on the back) and the checks you already ran. It shortens the visit.
Repair or replace?
This fault is in professional territory: the fix usually means a major part or board-level work, and the labour adds up. If your machine is already well into its service life, get the repair quote first, then compare it with the price of a current equivalent model before you decide. Paying a large share of a new machine's price to repair an old one is rarely the better deal; replacing a machine over one cheap fault is wasteful too.
Parts that may be involved
Steam thermistorSteam generator assemblyElectronic control board
Parts are model-specific. Find your model number first — usually on a label inside the door, on the door frame or on the back — and match the part to that number before ordering.
Questions people ask about F24
What does F24 mean on a LG oven?
F24 means: Steam sensor error: steam thermistor is open. On steam-equipped LG ovens, the steam heater ran but the steam thermistor circuit stayed open, so the control stopped the steam function. Tank and scale issues are worth ruling out first, but the sensor itself is buried in the steam generator and is a service part.
Can I fix LG F24 myself?
Only the preliminary checks. Code F24 usually means a part, wiring or the control board has failed, which is a technician job. Run the checks to rule out simple causes before you book.
How do I clear LG F24?
Fix the cause first — clearing the code on its own brings it straight back. Then restore power and water, run the shortest programme, and watch the stage where the code appeared. If the programme finishes with no code, it is cleared.
Sources checked
- LG Help Library: washing machine error codes
- PartsTown Resource Center: LG washing machine troubleshooting codes
The meaning and checks for this code were checked against the sources above in November 2026. Codes vary by model and region; if your manual lists a different meaning for your exact model, follow the manual.