Written by
Maya Chen Editorial TeamPublished October 20, 2026
Error codeF1 error
ApplianceRange
Quick answer
F1 is LG's code for an upper oven thermistor error on a range or oven. Reset steps from the manual and when to call for service.
Model compatibility: LG reuses codes across series and model years, so F1 error may mean something different on another appliance or generation. Confirm this against your model’s documentation and record your full model number before acting.
Plain language
What this code means
F1 indicates an upper oven thermistor error.
F1 on an LG range points to an upper oven thermistor error. The manual gives a short reset routine, and it is worth running before you book anything.
What F1 indicates
The owner’s manual describes F1 as an upper oven thermistor error. It sits in LG’s error list for ranges, and no specific model series is named for it.
Steps from the manual
Press the CLEAR/OFF key, then start the function you were using once more. If F1 comes back, shut off the circuit breaker feeding the unit, leave it off for 30 seconds, and restore power.
Should the code stay, or if you are unable to do the steps, LG says the range requires service.
Our team handles LG range service in Los Angeles. Call (310) 742-8008 and have the code F1, the model number and what you already tried ready. More on LG range repair.
Important safety warning. Do not attempt repairs involving electrical components, gas, water lines, refrigerant or sealed systems. Unplug the appliance if it is safe to reach the outlet, and leave internal diagnostics to a qualified technician.
Seeing this code on your LG appliance?
Book a specialist visit for a clear estimate and approval before any repair.
