LG · Oven
LG Oven F10 Error Code
Runaway temperature detected
What this error means
F10 is an over-temperature fault—the board detected oven temperature climbing beyond safe limits, often from a welded relay, shorted sensor, or stuck heat command during clean.
How F10 is detected
When F10 appears on a LG oven, the control board has confirmed that water did not leave the machine within the programmed drain window. On LG LRG4113ST, LG LREL6325F, and similar variants, the drain pump runs for a fixed interval—often three to seven minutes on washers and dishwashers—while a pressure switch or turbidity sensor verifies the tub or sump is empty. If water remains, the cycle stops to prevent spin with a full tub or overflow on the next fill.
Most F10 calls are resolved without parts: turn off breaker immediately when f10 appears with smell or smoke. Restricted drain paths mimic pump failure because the impeller spins against a blocked hose or filter. Document whether the pump hums audibly during the drain step; a humming pump with no water movement points to a clogged filter or kinked hose, while silence may indicate a failed pump motor or loose wiring at the harness.
After clearing blockages, run a short cycle and listen at the drain hose for steady water flow. If F10 returns on the next load with a clean filter and straight hose, measure resistance at the pump motor connector per the service manual for your model before ordering a replacement pump assembly.
Common causes
- Relay stuck closed powering bake element continuously
- Shorted temperature sensor telling board oven is cold
- Failed cooling fan during broil
- User cancelled clean late leaving elements energized abnormally
Step-by-step fixes
- 1Turn OFF breaker immediately when F10 appears with smell or smoke
- 2Do not restart until the oven cools to room temperature
- 3Inspect bake element for blistering or ground faults
- 4Schedule service before next use—F10 is a serious safety flag
When to call a technician
Mandatory service after F10—relay board or sensor testing required before operating again.
Affected models
- LG LRG4113ST
- LG LREL6325F
- LG LDG4313ST
Prevention & maintenance
- Clean drain filters and hose terminations monthly on high-use ovens to prevent F10 from lint and food debris buildup.
- Record when F10 appears in the cycle and whether it clears after a 60-second power reset on your LG oven—that detail speeds diagnosis if you call service.
- Keep the model and serial number from the rating plate when ordering parts for F10; LG uses multiple revisions with different harness lengths and board firmware.
- Photograph wiring connector orientation before disconnecting any component while troubleshooting F10; reversed plugs on pumps and valves cause immediate repeat faults.