Written by
Maya Chen Editorial TeamPublished October 20, 2026
Error codeF9
ApplianceRange
Quick answer
F9 on an LG range or oven means the upper oven is not heating properly. Two quick owner steps come first.
Model compatibility: LG reuses codes across series and model years, so F9 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
Upper oven is not heating properly.
An LG range showing F9 is telling you the upper oven is not heating properly. If your baking has stalled, start with the steps below.
Try this first
Tap CLEAR/OFF and begin the original function again.
When F9 returns, cut power at the unit’s breaker for 30 seconds, then restore it.
Service is the next step if the code stays or the steps cannot be done.
Models
LG ranges and ovens.
Related codes
F6 is an upper oven heating error, closely tied to this complaint.
F5 is a lower oven thermistor error, so check which oven the code concerns.
When F9 will not go away, our Los Angeles line is (310) 742-8008. Keep the code, the model number and a note of the reset steps nearby. Read about LG oven repair too.
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.
