--- title: "Bosch cooktop showing dE with zones that stay cold" description: "What dE means on Bosch cooktops, what to check before booking, and when it is not a failure at all." url: "https://cooktoprepair.center/error-codes/bosch-de/" --- # Bosch cooktop showing dE dE means the demo setting is switched on. ## What dE actually means. dE means the demo setting is switched on. In that state the displays and keys respond normally for a sales floor, but no power reaches the elements or induction coils, which is why a pan stays cold. Bosch cooktop display What to do when dE shows on the cooktop ### Kind of code Mode, not a failure A state the cooktop was put in, or one it picked deliberately — a child lock, a demo mode that lights the keys but heats nothing, a residual-heat letter over a zone that is still warm, a prompt that no pan has been found. Nothing has broken and no part is called for. ### Usually leads to No repair Switch the cooktop's breaker off for 30 seconds, turn it back on, and touch any key on the cooktop within the next three minutes. ### Shows up as Cooktop Element Not Heating A coil stays black, a radiant ring under the glass never glows, or a zone warms so weakly that a pot of water will not boil. ### Make Bosch A German maker whose US site lists gas and induction cooktops for building into the counter. ### Source Bosch cooktop and rangetop error codes (US support) Listed by Bosch for both its electric (radiant) and induction cooktops. ## Before you book, in this order. Each step comes from Bosch's own guidance for dE on its cooktops. Follow it to the end: the last card says whether this is a visit. 01 Switch the cooktop's breaker off for 30 seconds, turn it back on, and touch any key on the cooktop within the next three minutes. 02 Before switching the breaker back on, make sure you can reach the cooktop keys within three minutes of restoring power. 03 If dE comes back after that, book a visit; the setting may need to be cleared from the basic settings menu. ### Cleared? The cooktop came right without a new part. If the same message returns while a zone or burner is on, or the top shuts itself down again mid-meal, treat it as a fresh problem and book it. ### What not to do dE is not a dead element or a failed board. The heating parts are simply not being asked to work. ## What you may notice with it. The cooktop problems dE tends to arrive with. Answer these at the cooktop before anyone is booked. [All problems](https://cooktoprepair.center/problems/) Before you call ### [Cooktop Element Not Heating](https://cooktoprepair.center/problems/element-not-heating/) [All 6 causes, cheapest first](https://cooktoprepair.center/problems/element-not-heating/) It also comes with - [**Cooktop Controls Unresponsive**](https://cooktoprepair.center/problems/cooktop-controls-unresponsive/) - [**Cooktop Error Code**](https://cooktoprepair.center/problems/cooktop-error-code/) Problem ### Cooktop Element Not Heating 6 causes, cheapest first No repair indicated ## Nothing to repair. A state the cooktop was put in, or one it picked deliberately — a child lock, a demo mode that lights the keys but heats nothing, a residual-heat letter over a zone that is still warm, a prompt that no pan has been found. Nothing has broken and no part is called for. [How to read what your cooktop is telling you](https://cooktoprepair.center/problems/cooktop-error-code/) ## Bosch cooktops. A German maker whose US site lists gas and induction cooktops for building into the counter. [Bosch cooktop repair](https://cooktoprepair.center/brands/bosch/) More Bosch codes [F1](https://cooktoprepair.center/error-codes/bosch-f1/) [F2](https://cooktoprepair.center/error-codes/bosch-f2/) [F4](https://cooktoprepair.center/error-codes/bosch-f4/) [F5](https://cooktoprepair.center/error-codes/bosch-f5/) [F8](https://cooktoprepair.center/error-codes/bosch-f8/) [U400](https://cooktoprepair.center/error-codes/bosch-u400/) [E9000](https://cooktoprepair.center/error-codes/bosch-e9000/) [E9011](https://cooktoprepair.center/error-codes/bosch-e9011/) [E7010](https://cooktoprepair.center/error-codes/bosch-e7010/) Mode, not a failure on other makes [Bertazzoni L](https://cooktoprepair.center/error-codes/bertazzoni-l/) [BlueStar u](https://cooktoprepair.center/error-codes/bluestar-u/) [Café Power arc / ON indicator blinking](https://cooktoprepair.center/error-codes/cafe-power-arc-blinking/) [Electrolux Hot](https://cooktoprepair.center/error-codes/electrolux-hot/) [Fisher & Paykel P](https://cooktoprepair.center/error-codes/fisher-and-paykel-p/) [Frigidaire HE](https://cooktoprepair.center/error-codes/frigidaire-he/) [Gaggenau F8](https://cooktoprepair.center/error-codes/gaggenau-f8/) [GE Profile Power arc blinking](https://cooktoprepair.center/error-codes/ge-profile-power-arc-blinking/) [All 63 codes of this kind](https://cooktoprepair.center/error-codes/#family-mode) Bosch builds this ### Gas cooktop A gas cooking surface dropped into a countertop cutout, with its gas line and power cord running down into the cabinet underneath. Bosch builds this ### Electric cooktop A coil or smooth-glass radiant cooking surface built into the countertop and wired to its own circuit in the cabinet or wall behind it. Bosch builds this ### Induction cooktop A glass cooktop in the counter that heats the pan itself through magnetic coils, run by power boards and cooled by a fan underneath. ## In Bosch's own words > The demo mode has been activated. [Bosch cooktop and rangetop error codes (US support)](https://www.bosch-home.com/us/owner-support/error-codes/cooktops-and-rangetops) [Bosch cooktop and rangetop error codes (US support)](https://www.bosch-home.com/us/owner-support/error-codes/cooktops-and-rangetops) Every code on this site is taken from the manufacturer's documentation, never from a forum or a parts listing. Listed by Bosch for both its electric (radiant) and induction cooktops. ## Bosch dE cooktop 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 cooktop's breaker off for 30 seconds, turn it back on, and touch any key on the cooktop within the next three minutes. ### Why would a new Bosch cooktop arrive in demo mode? Display units and some installs are left with the demo setting on. The cooktop looks alive, yet nothing heats until the setting is cleared with the breaker reset Bosch describes. ### Can dE come back on its own? It should not after a proper reset. If it returns, the setting is being held somewhere the reset does not reach, and a technician can clear it from the settings menu. ### Does dE on a Bosch radiant cooktop behave the same as on a Bosch induction cooktop? Bosch lists dE for both its electric and its induction cooktops with the same meaning, the demo setting. On either type the display and keys respond while no power reaches the heating parts. The same breaker reset and key touch apply to both. --- **[Read on the site: Bosch cooktop showing dE with zones that stay cold](https://cooktoprepair.center/error-codes/bosch-de/)** **[Book a visit with CooktopRepair.center](https://cooktoprepair.center/schedule/)**