Understanding the F9 Error Code on LG Electric Oven. The F9 error code on an LG electric oven indicates that the oven has failed to exceed 150 degrees Fahrenheit.. Inspect the probe for any damage or loose connections. If the probe is damaged, it will need to be replaced. 3. Calibrate the Oven:
Press the "CLEAR/OFF" key and try to turn your oven on again. If the code comes back, unplug your oven, wait 30 seconds, and turn it back on. If it's not easy to get to the outlet where the oven is plugged in, you can alternatively shut off the circuit breaker that powers the outlet your oven is plugged into.. LG Oven F9 Error Code (Heating Error - Why It Occurs And How To Resolve The Problem - Easy Guide). In this video tutorial I will show you how to fix LG Oven.