# LG ranges error codes | Costolio URL: https://costolio.com/home/appliances/lg/lg-ranges/ Updated: 2026-11-02 # LG ranges error codes 17 range / oven error codes for LG ranges, what each one means and what to try, paraphrased from LG's own source. Codes vary by model, so confirm in your own manual. ## All codes - [F1](https://costolio.com#f1) Upper oven thermistor error. - [F3](https://costolio.com#f3) Touch pad key error. - [F6](https://costolio.com#f6) Upper oven heating error. - [F7](https://costolio.com#f7) Upper convection fan error. - [F8](https://costolio.com#f8) Probe error. - [F9](https://costolio.com#f9) Upper oven is not heating properly. - [F10](https://costolio.com#f10) Door locking system failure. - [F11](https://costolio.com#f11) Communication error. - [F16](https://costolio.com#f16) Oven sensor error. - [F17](https://costolio.com#f17) Convection fan error. - [F19](https://costolio.com#f19) Oven heating error. - [F27](https://costolio.com#f27) Cooling fan stalled during self clean. - [F36](https://costolio.com#f36) Transistor error. - [F38](https://costolio.com#f38) Main board to inverter communication error. - [F42](https://costolio.com#f42) Voltage error. - [HS](https://costolio.com#hs) The cooktop surface is above 150°F (hot surface warning). - [PF](https://costolio.com#pf) Power was interrupted. ## F1 What it means: Upper oven thermistor error. This one often needs a licensed technician. ### What to try - Press CLEAR/OFF and try again. - Turn the breaker off for 30 seconds, then back on. - Request service if the code returns. ## F3 What it means: Touch pad key error. This one often needs a licensed technician. ### What to try - Turn the breaker off for 30 seconds, then back on. - Request service if the code returns. ## F6 What it means: Upper oven heating error. This one often needs a licensed technician. ### What to try - Press CLEAR/OFF and try again. - Turn the breaker off for 30 seconds, then back on. - Request service if the code returns. ## F7 What it means: Upper convection fan error. This one often needs a licensed technician. ### What to try - Press CLEAR/OFF and try again. - Turn the breaker off for 30 seconds, then back on. - Request service if the code returns. ## F8 What it means: Probe error. This one often needs a licensed technician. ### What to try - Press CLEAR/OFF and try again. - Turn the breaker off for 30 seconds, then back on. - Request service if the code returns. ## F9 What it means: Upper oven is not heating properly. This one often needs a licensed technician. ### What to try - Press CLEAR/OFF and try again. - Turn the breaker off for 30 seconds, then back on. - Request service if the code returns. ## F10 What it means: Door locking system failure. This one often needs a licensed technician. ### What to try - Press CLEAR/OFF and try again. - Turn the breaker off for 30 seconds, then back on. - Request service if the code returns. ## F11 What it means: Communication error. This one often needs a licensed technician. ### What to try - Press CLEAR/OFF and try again. - Turn the breaker off for 30 seconds, then back on. - Request service if the code returns. ## F16 What it means: Oven sensor error. This one often needs a licensed technician. ### What to try - Press CLEAR/OFF and try again. - Turn the breaker off for 30 seconds, then back on. - Request service if the code returns. ## F17 What it means: Convection fan error. This one often needs a licensed technician. ### What to try - Press CLEAR/OFF and try again. - Turn the breaker off for 30 seconds, then back on. - Request service if the code returns. ## F19 What it means: Oven heating error. This one often needs a licensed technician. ### What to try - Press CLEAR/OFF and try again. - Turn the breaker off for 30 seconds, then back on. - Request service if the code returns. ## F27 What it means: Cooling fan stalled during self clean. This one often needs a licensed technician. ### What to try - Turn the breaker off for 30 seconds, then back on. - Request service if the code returns. ## F36 What it means: Transistor error. This one often needs a licensed technician. ### What to try - Turn the breaker off for 30 seconds, then back on. - Request service if the code returns. ## F38 What it means: Main board to inverter communication error. This one often needs a licensed technician. ### What to try - Turn the breaker off for 30 seconds, then back on. - Request service if the code returns. ## F42 What it means: Voltage error. This one often needs a licensed technician. ### What to try - Turn the breaker off for 30 seconds, then back on. - Request service if the code returns. ## HS What it means: The cooktop surface is above 150°F (hot surface warning). You can usually fix this yourself. ### What to try - Do not touch the cooktop until the indicator goes off. ## PF What it means: Power was interrupted. You can usually fix this yourself. ### What to try - Press CLEAR/OFF and try the original function again. - If it reappears, turn the circuit breaker off for 30 seconds, then back on; request service if it continues. ### Source - [LG Range Error Codes List (LG US Help Library)](https://www.lg.com/us/support/help-library/lg-range-error-codes-list--20150154166283) (checked 2026-11-02) Brand names and model names are trademarks of their owners. 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