Written by
Marcus Lindqvist Appliance Care EditorPublished October 26, 2026
VERIFIED
Error codeF5 code
ApplianceRange
LG defines F5 as a lower oven thermistor error in its cooktop and range table. Both range and oven controls can display it, and the table names no series for it.
Reset sequence
Press CLEAR/OFF.
Start the earlier function once more.
If F5 returns, switch the breaker off and let 30 seconds pass.
Switch the breaker on.
What if F5 remains
Once those steps are done the owner has nothing left to try, and a code that lingers points to service.
LG ovens and ranges in San Francisco and the Bay Area are covered when you call (415) 223-7887. Have F5, the model number and a record of the CLEAR/OFF and breaker steps ready. More at LG range and oven repair.
Model compatibility: LG reuses codes across series and model years, so F5 code 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
F5 is a lower oven thermistor error.
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.
You submit a request with your appliance model and symptom, we confirm an appointment window, and a technician performs an on-site diagnosis. You then receive a clear estimate and decide whether to proceed before any repair begins.
Yes. We provide an upfront estimate after diagnosis. No parts are ordered or installed until you approve the work, so there are no surprise charges.
Replacement parts are selected for the exact model and confirmed with you before ordering or installation.
Service areas are listed on the Locations page. Contact us with your ZIP code to confirm current coverage for your address.
Ready to get your LG appliance working again?
Book a repair online or call us — clear estimates and approval before any repair work begins.
