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The back of a wall oven's control panel with its cover removed, a flat ribbon cable running from the display to the main board.

LG wall oven
showing F-3

LG's manual lists F-3 as a key short error: the control believes a button is being held when nobody is touching it.

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Mon–Sat, 8am–8pm

  • Communication
  • Controls and sensors
  • Source: LG

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Three short steps, about a minute.

or call (844) 407-1890

What F-3
actually means.

LG's manual lists F-3 as a key short error: the control believes a button is being held when nobody is touching it. LG asks you to clear the display and set the oven again before anything else.

LG oven display · also shown as F3

What to do when F-3 shows on the oven

Kind of codeCommunication

The display and the main control board stopped hearing each other, or the board failed its own check. A power dip, a loose ribbon cable or moisture behind the panel is ruled out before either board is replaced, and an oven that stays on through this code is switched off at the breaker.

Usually leads toControls and sensors

Dead keys, a blank or garbled display, an oven that will not switch off or will not respond, traced to the board, the touch panel or their wiring.

Shows up asOven Control Panel Not Responding

The touch controls or buttons do nothing, the display is blank, or some keys work and others do not.

MakeLG

A Korean electronics group selling wall ovens with convection, air fry and combination designs.

SourceLG WSEP4727* wall oven owner's manual MFL51224549 Rev.06 (LG document server)

From the LG WSEP4727* wall oven owner's manual, which pairs F-3 with a key short.

Before you book,
in this order.

Each step comes from LG's own guidance for F-3 on its ovens. Follow it to the end: the last card says whether this is a visit.

01

Turn off the active function to clear the display.

02

Make sure nothing is resting against the control panel.

03

Set the oven again; if F-3 returns, record it and book a visit.

Still there?

It usually turns into controls and sensors. Book with the code and the model number.

What not to do

F-3 is not Control Lock. A locked panel shows Loc, not an F code.

What you may
notice with it.

The oven problems F-3 tends to arrive with. Answer these at the oven before anyone is booked.

All problems

Before you call

Oven Control Panel Not Responding

All 5 causes, cheapest first

It also comes with

A finger pressing the dark touch control strip above a stainless wall oven in a US home kitchen, the display unlit. Problem

Oven Control Panel Not Responding

5 causes, cheapest first

Where F-3 usually leads

Controls and sensors.

Control board or touch panel · moderate to highest.
Book a visit What the job involves

LG
ovens.

A Korean electronics group selling wall ovens with convection, air fry and combination designs.

LG oven repair

More LG codes

F-9Locsbdoor

Communication on other makes

Bertazzoni Err_Bosch E11Dacor C-d0Fisher & Paykel F101JennAir F1 E1Maytag F6 E1Samsung C-d0Thermador E11
All 23 codes of this kind
A stainless single wall oven is set into a painted cabinet at chest height in a bright US home kitchen. LG builds this

Single wall oven

One oven cavity set into a cabinet at chest height, with its own controls above the door and nothing to cook on above it.

 A stainless double wall oven fills a tall painted cabinet in a US home kitchen, with both doors closed and both oven lights on. LG builds this

Double wall oven

Two full oven cavities stacked in one tall cabinet, sharing one control panel and one power supply but heating on their own.

In LG's own words

Cause: Key short error
LG WSEP4727* wall oven owner's manual MFL51224549 Rev.06 (LG document server) LG WSEP4727* wall oven owner's manual MFL51224549 Rev.06 (LG document server)

Every code on this site is taken from the manufacturer's documentation, never from a forum or a parts listing. From the LG WSEP4727* wall oven owner's manual, which pairs F-3 with a key short.

LG F-3 oven repair,
where we come out.

The same visit in every metro below: the code, the model number, and a diagnosis before any part is ordered.

All service areas

Tampa BayFL · 31 areas

OrlandoFL · 30 areas

Miami / South FloridaFL · 47 areas

New York MetroNY · 75 areas

HoustonTX · 36 areas

ChicagoIL · 50 areas

Los AngelesCA · 95 areas

San DiegoCA · 31 areas

San Francisco Bay AreaCA · 74 areas

A parent and a child sliding a tray of cookies into an open wall oven together in a bright kitchen
For the heart of your home.

Questions
about F-3.

Can I clear F-3 myself?
Turn off the active function to clear the display. If it comes back, it needs a visit.
My LG oven showed F-3 once and then worked. Should I worry?
A single F-3 that clears when you turn the function off and set the oven again needs no action. If it keeps returning, record it and book a visit, as LG advises.
Is F-3 on an LG wall oven the same as the control being locked?
No. Control Lock shows Loc and is cleared by holding CLEAR/OFF for 3 seconds. F-3 is the control reporting a key it thinks is stuck.

Back to your everyday

Still showing F-3?

Book with the code exactly as shown, the full model number, and whether you can smell gas or burning — with a code, that is where the diagnosis starts.

Schedule a repair Call (844) 407-1890
(844) 407-1890 Schedule a repair