Written by
Maya Chen Editorial TeamPublished October 20, 2026
Error codeF4
ApplianceRange
Quick answer
LG lists F4 as a lower oven thermistor error. Press CLEAR/OFF and retry, then reset the breaker if it returns.
Model compatibility: LG reuses codes across series and model years, so F4 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
F4 means a lower oven thermistor error on LG ranges and ovens.
LG describes F4 as a lower oven thermistor error. If the code is on your range display now, start with the reset below.
How to clear F4
Tap CLEAR/OFF to cancel the fault display.
Start the same function you were using.
Should the code show again, switch off the unit’s breaker for 30 seconds.
Switch the breaker on again.
Which LG units show it
It belongs to the LG range and oven group of error codes, with no particular series named.
After the reset
If the reset does not clear it, the next step in the manual is service. Leave anything behind the panels to a technician.
Los Angeles owners can call (310) 742-8008 for LG range service. See LG range repair for the service outline, and tell us the code F4, the model number and which steps you tried.
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.
