--- title: "Samsung induction range showing an underlined u" description: "What Underlined u means on Samsung induction ranges, what to check before booking, and when it is not a failure at all." url: "https://rangerepair.center/error-codes/samsung-underlined-u/" --- # Samsung induction range showing Underlined u An underlined u on a Samsung induction range is the pan-detection signal. ## What Underlined u actually means. An underlined u on a Samsung induction range is the pan-detection signal. The pan is the wrong size, the wrong material or not centered, so the zone will not heat, and it turns off after a minute if nothing changes. Samsung range display What to do when Underlined u shows on the range ### Kind of code Surface elements and induction A radiant element, a coil or an induction zone did not heat the way the control expected, or ran hotter than it should. The pan, the switch behind the knob and the wiring to the element come first; on induction, the power board and the coil under the glass are checked next. A zone that will not switch off, or a crack in the glass, means the breaker goes off before anything else. ### Usually leads to Surface element and glass top repair Electric zones that stay cold, run too hot or will not switch off, and cracked or damaged glass on radiant and induction models. ### Shows up as Induction Range Not Detecting Pan An induction zone flashes, beeps, shows its no-pan symbol or switches itself off, even with a pan sitting right on it. ### Make Samsung A Korean electronics group whose freestanding and slide-in ranges run on gas, electric and induction. ### Source Samsung support article "Samsung range or wall oven error codes" Induction models only, per Samsung's range code article. ## Before you book, in this order. Each step comes from Samsung's own guidance for Underlined u on its ranges. Follow it to the end: the last card says whether this is a visit. 01 Center the pan on the zone. 02 Check that a magnet sticks to the pan base and that the base covers the zone well. 03 If a known induction pan still gets the underlined u, book a visit. ### Still there? It usually turns into [surface element and glass top repair](https://rangerepair.center/services/surface-element-and-glass-top-repair/). Book with the code and the model number. ### What not to do The underlined u is not a board error; it only concerns the pan. ## What you may notice with it. The range problems Underlined u tends to arrive with. Answer these at the range before anyone is booked. [All problems](https://rangerepair.center/problems/) Before you call ### [Induction Range Not Detecting Pan](https://rangerepair.center/problems/induction-not-detecting-pan/) [All 6 causes, cheapest first](https://rangerepair.center/problems/induction-not-detecting-pan/) It also comes with - [**Range Surface Element Not Heating**](https://rangerepair.center/problems/surface-element-not-heating/) - [**Range Error Code**](https://rangerepair.center/problems/range-error-code/) Problem ### Induction Range Not Detecting Pan 6 causes, cheapest first Where Underlined u usually leads ## Surface element and glass top repair. **Surface element, switch or glass top · low to moderate.** Book a visit [What the job involves](https://rangerepair.center/services/surface-element-and-glass-top-repair/) ## Samsung ranges. A Korean electronics group whose freestanding and slide-in ranges run on gas, electric and induction. [Samsung range repair](https://rangerepair.center/brands/samsung/) More Samsung codes [C-20](https://rangerepair.center/error-codes/samsung-c-20/) [C-21](https://rangerepair.center/error-codes/samsung-c-21/) [C-24](https://rangerepair.center/error-codes/samsung-c-24/) [C-25](https://rangerepair.center/error-codes/samsung-c-25/) [C-30](https://rangerepair.center/error-codes/samsung-c-30/) [C-d0](https://rangerepair.center/error-codes/samsung-c-d0/) [C-d1](https://rangerepair.center/error-codes/samsung-c-d1/) [C-F0](https://rangerepair.center/error-codes/samsung-c-f0/) [bAd LinE](https://rangerepair.center/error-codes/samsung-bad-line/) [tESt](https://rangerepair.center/error-codes/samsung-test/) [-dC-](https://rangerepair.center/error-codes/samsung-dc/) [door](https://rangerepair.center/error-codes/samsung-door/) [All 15 Samsung codes](https://rangerepair.center/error-codes/#codes-samsung) Surface elements and induction on other makes [AGA E2](https://rangerepair.center/error-codes/aga-e2/) [BlueStar E2](https://rangerepair.center/error-codes/bluestar-induction-e2/) [Bosch F1](https://rangerepair.center/error-codes/bosch-f1/) [Café Flashing ON indicator](https://rangerepair.center/error-codes/cafe-on-indicator-flash/) [Electrolux F40](https://rangerepair.center/error-codes/electrolux-f40/) [Frigidaire F40](https://rangerepair.center/error-codes/frigidaire-f40/) [GE Profile Flashing power setting](https://rangerepair.center/error-codes/ge-profile-flashing-power/) [Hestan E2](https://rangerepair.center/error-codes/hestan-induction-e2/) [All 38 codes of this kind](https://rangerepair.center/error-codes/#family-surface) Samsung 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. Samsung builds this ### Electric range Coil elements or radiant elements under a smooth glass top, with an electric oven below, all running on a dedicated 240-volt circuit. Samsung 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. ## In Samsung's own words > It indicates a Pan Detection Error and only appears on induction cooktops. [Samsung support article "Samsung range or wall oven error codes"](https://www.samsung.com/us/support/troubleshoot/TSG10003529) [Samsung support article "Samsung range or wall oven error codes"](https://www.samsung.com/us/support/troubleshoot/TSG10003529) Every code on this site is taken from the manufacturer's documentation, never from a forum or a parts listing. Induction models only, per Samsung's range code article. ## Samsung Underlined u 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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Center the pan on the zone. If it comes back, it needs a visit. ### My pan worked on my old Samsung glass top but shows an underlined u on induction. Why? Induction needs a magnetic pan of the right size. A pan that worked on a radiant glass top may not be magnetic enough. ### Why does my Samsung induction zone switch off a minute after the underlined u appears? Samsung turns the element off after 1 minute if the pan problem is not fixed. Moving or changing the pan within that minute keeps it on. --- **[Read on the site: Samsung induction range showing an underlined u](https://rangerepair.center/error-codes/samsung-underlined-u/)** **[Book a visit with RangeRepair.center](https://rangerepair.center/schedule/)**