--- title: "LG wall oven showing F-3 | OvenRepair.center" description: "What F-3 means on LG wall ovens, what to check before booking, and when it is not a failure at all." url: "https://ovenrepair.center/error-codes/lg-f-3/" --- # 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. ## 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 code Communication 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 to Controls 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 as Oven Control Panel Not Responding The touch controls or buttons do nothing, the display is blank, or some keys work and others do not. ### Make LG A Korean electronics group selling wall ovens with convection, air fry and combination designs. ### Source LG 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](https://ovenrepair.center/services/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](https://ovenrepair.center/problems/) Before you call ### [Oven Control Panel Not Responding](https://ovenrepair.center/problems/control-panel-not-responding/) [All 5 causes, cheapest first](https://ovenrepair.center/problems/control-panel-not-responding/) It also comes with - [**Oven Error Code**](https://ovenrepair.center/problems/oven-error-code/) 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](https://ovenrepair.center/services/controls-and-sensors/) ## LG ovens. A Korean electronics group selling wall ovens with convection, air fry and combination designs. [LG oven repair](https://ovenrepair.center/brands/lg/) More LG codes [F-9](https://ovenrepair.center/error-codes/lg-f-9/) [Loc](https://ovenrepair.center/error-codes/lg-loc/) [sb](https://ovenrepair.center/error-codes/lg-sb/) [door](https://ovenrepair.center/error-codes/lg-door/) Communication on other makes [Bertazzoni Err_](https://ovenrepair.center/error-codes/bertazzoni-err/) [Bosch E11](https://ovenrepair.center/error-codes/bosch-e11/) [Dacor C-d0](https://ovenrepair.center/error-codes/dacor-c-d0/) [Fisher & Paykel F101](https://ovenrepair.center/error-codes/fisher-and-paykel-f101/) [JennAir F1 E1](https://ovenrepair.center/error-codes/jennair-f1e1/) [Maytag F6 E1](https://ovenrepair.center/error-codes/maytag-f6-e1/) [Samsung C-d0](https://ovenrepair.center/error-codes/samsung-c-d0/) [Thermador E11](https://ovenrepair.center/error-codes/thermador-e11/) [All 23 codes of this kind](https://ovenrepair.center/error-codes/#family-communication) 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. 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)](https://gscs-b2c.lge.com/downloadFile?fileId=FKW5T2xTDQ335i2FyX69Nw) [LG WSEP4727* wall oven owner's manual MFL51224549 Rev.06 (LG document server)](https://gscs-b2c.lge.com/downloadFile?fileId=FKW5T2xTDQ335i2FyX69Nw) 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. 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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. --- **[Read on the site: LG wall oven showing F-3 | OvenRepair.center](https://ovenrepair.center/error-codes/lg-f-3/)** **[Book a visit with OvenRepair.center](https://ovenrepair.center/schedule/)**