--- title: "La Cornue Château induction plate showing L" description: "What L means on La Cornue Château induction plates, what to check before booking, and when it is not a failure at all." url: "https://rangerepair.center/error-codes/la-cornue-l/" --- # La Cornue Château induction plate showing L L tells you the locking function has been switched on, so the zones will not respond to the knobs. ## What L actually means. L tells you the locking function has been switched on, so the zones will not respond to the knobs. It is a deliberate setting for safety, not a message about a failed part. La Cornue range display What to do when L shows on the range ### Kind of code Mode, not a failure Something the range was told to do, or a state it chose on purpose — a control lock, a Sabbath setting, a demo mode that lights the display but never heats, a pan warning on an induction zone. Nothing has worn out, and no part is needed. ### Usually leads to No repair Switch the locking function off as described in your Château guide, then set the zone again. ### Shows up as Range Control Panel Not Responding The touch keys or knobs on the range do nothing, only some keys work, the display is blank or frozen, or it beeps without starting. ### Make La Cornue A French maker of hand-assembled ranges, known for vaulted oven ceilings and custom finishes. ### Source Château G4 Electric Series Installation, Operation and Maintenance Château 90, 120 and 150 induction plates per the G4 electric series display table. ## Before you book, in this order. Each step comes from La Cornue's own guidance for L on its ranges. Follow it to the end: the last card says whether this is a visit. 01 Switch the locking function off as described in your Château guide, then set the zone again. ### Cleared? The range was set right without a new part. If the same message comes back while a burner or the oven is in use, or the range cuts out again, treat it as a new problem and book it. ### What not to do An L display does not mean the controls have failed; the plate is simply locked. ## What you may notice with it. The range problems L tends to arrive with. Answer these at the range before anyone is booked. [All problems](https://rangerepair.center/problems/) Before you call ### [Range Control Panel Not Responding](https://rangerepair.center/problems/control-panel-not-responding/) [All 5 causes, cheapest first](https://rangerepair.center/problems/control-panel-not-responding/) It also comes with - [**Range Surface Element Not Heating**](https://rangerepair.center/problems/surface-element-not-heating/) Problem ### Range Control Panel Not Responding 5 causes, cheapest first No repair indicated ## Nothing to repair. Something the range was told to do, or a state it chose on purpose — a control lock, a Sabbath setting, a demo mode that lights the display but never heats, a pan warning on an induction zone. Nothing has worn out, and no part is needed. [How to read what your range is telling you](https://rangerepair.center/problems/range-error-code/) ## La Cornue ranges. A French maker of hand-assembled ranges, known for vaulted oven ceilings and custom finishes. [La Cornue range repair](https://rangerepair.center/brands/la-cornue/) More La Cornue codes [E2](https://rangerepair.center/error-codes/la-cornue-e2/) [U400](https://rangerepair.center/error-codes/la-cornue-u400/) [Er](https://rangerepair.center/error-codes/la-cornue-er/) [U](https://rangerepair.center/error-codes/la-cornue-u/) [E](https://rangerepair.center/error-codes/la-cornue-e/) [H](https://rangerepair.center/error-codes/la-cornue-h/) Mode, not a failure on other makes [AGA S](https://rangerepair.center/error-codes/aga-s/) [Bertazzoni H](https://rangerepair.center/error-codes/bertazzoni-h/) [Bosch ERR/toP](https://rangerepair.center/error-codes/bosch-err-top/) [Café CLOSE DOOR](https://rangerepair.center/error-codes/cafe-close-door/) [Electrolux 5d](https://rangerepair.center/error-codes/electrolux-5d/) [Frigidaire –](https://rangerepair.center/error-codes/frigidaire-dash/) [Fulgor Milano F13](https://rangerepair.center/error-codes/fulgor-milano-f13/) [GE Profile HOT](https://rangerepair.center/error-codes/ge-profile-hot/) [All 50 codes of this kind](https://rangerepair.center/error-codes/#family-mode) La Cornue builds this ### Gas range Open flames on top and a gas-fired oven below, all fed by one supply line behind the range and lit by igniters rather than a match. La Cornue builds this ### Dual-fuel range Gas burners on top and an electric oven below, the combination most professional-style ranges use, needing both a gas line and a 240-volt circuit. La Cornue builds this ### Induction range A glass top that heats the pan itself through copper coils and power boards, over an electric oven, with electronics doing almost all the work. ## In La Cornue's own words > The Locking function is activated. [Château G4 Electric Series Installation, Operation and Maintenance](https://d2a7uujil7d64c.cloudfront.net/file/704) Every code on this site is taken from the manufacturer's documentation, never from a forum or a parts listing. Château 90, 120 and 150 induction plates per the G4 electric series display table. ## La Cornue L range 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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Switch the locking function off as described in your Château guide, then set the zone again. ### Why do the knobs on my La Cornue Château do nothing while L shows? The locking function blocks the zones on purpose. Turn it off and the knobs work again. ### Does L on a Château plate need a service visit? No. Book a visit only if the zones stay dead after the lock has been switched off. --- **[Read on the site: La Cornue Château induction plate showing L](https://rangerepair.center/error-codes/la-cornue-l/)** **[Book a visit with RangeRepair.center](https://rangerepair.center/schedule/)**