--- title: "Samsung stove oven shows C-21 and shuts off" description: "What C-21 means on Samsung stove oven shows C-21 and shuts offs, what to check before booking, and when it is not a failure at all." url: "https://stoverepair.center/error-codes/samsung-c-21/" --- # Samsung stove oven shows C-21 and shuts off Samsung uses C-21 when the temperature inside the oven climbs abnormally high. ## What C-21 actually means. Samsung uses C-21 when the temperature inside the oven climbs abnormally high. The control shuts heating down to protect the stove, the cabinets around it and the food. Samsung stove display What to do when C-21 shows on the stove ### Kind of code Oven heating The oven part of the stove was set to bake or broil and did not warm the way the controls expected, or took far too long to get there. On an electric stove a bake or broil element that has burned through is the everyday reason; on a gas stove the oven igniter and the valve it opens are looked at first. The wiring and the relay on the board are checked before the board itself is blamed. ### Usually leads to Stove oven heating repair The oven part of a stove that stays cold, heats slowly or bakes too hot or too cool, fixed at the bake and broil elements, the oven igniter, the gas valve or the temperature sensor. ### Shows up as Oven on My Stove Runs Hot or Cold Recipes take much longer or much less time than they should, cakes burn on the outside and stay raw inside, or an oven thermometer disagrees with the display by more than a little. ### Make Samsung The Korean electronics maker, whose stoves come in gas, electric and induction models, many app-connected. ### Source Samsung NE63A6711 electric range user manual Where C-21 is documented: Printed in the information code tables of the NX60A6711SS gas and NE63A6711 electric Samsung manuals; the gas table shows its codes as pictures. ## Before you book, in this order. Each step comes from Samsung's own guidance for C-21 on its stoves. Follow it to the end: the last card says whether this is a visit. 01 Press OFF/CLEAR and leave the oven door closed while it cools on its own. 02 Check that nothing is covering the vent and that no foil lines the oven floor or racks. 03 Once the oven is cool, switch the breaker off for at least 30 seconds and back on. 04 Should C-21 reappear the next time you bake, retire the oven for now and book a visit. ### Still there? It usually turns into [stove oven heating repair](https://stoverepair.center/services/stove-oven-heating-repair/). Book with the code and the model number. ### What not to do C-21 is not a report of a broken sensor wire. On Samsung stoves the sensor itself is C-20, while C-21 means the reading was real and too high. ## What you may notice with it. The stove problems C-21 tends to arrive with. Answer these at the stove before anyone is booked. [All problems](https://stoverepair.center/problems/) Before you call ### [Oven on My Stove Runs Hot or Cold](https://stoverepair.center/problems/stove-oven-temperature-off/) [All 7 causes, cheapest first](https://stoverepair.center/problems/stove-oven-temperature-off/) It also comes with - [**Stove Smoking**](https://stoverepair.center/problems/stove-smoking/) - [**Stove Error Code**](https://stoverepair.center/problems/stove-error-code/) Problem ### Oven on My Stove Runs Hot or Cold 7 causes, cheapest first Where C-21 usually leads ## Stove oven heating repair. **Oven element, igniter, gas valve or sensor · low to moderate.** Book a visit [What the job involves](https://stoverepair.center/services/stove-oven-heating-repair/) ## Samsung stoves. The Korean electronics maker, whose stoves come in gas, electric and induction models, many app-connected. [Samsung stove repair](https://stoverepair.center/brands/samsung/) More Samsung codes [C-20](https://stoverepair.center/error-codes/samsung-c-20/) [C-24](https://stoverepair.center/error-codes/samsung-c-24/) [C-25](https://stoverepair.center/error-codes/samsung-c-25/) [C-30](https://stoverepair.center/error-codes/samsung-c-30/) [C-d0](https://stoverepair.center/error-codes/samsung-c-d0/) [C-d1](https://stoverepair.center/error-codes/samsung-c-d1/) [C-F0](https://stoverepair.center/error-codes/samsung-c-f0/) [bAd LinE](https://stoverepair.center/error-codes/samsung-bad-line/) [tESt](https://stoverepair.center/error-codes/samsung-test/) [-dE-](https://stoverepair.center/error-codes/samsung-de/) [door](https://stoverepair.center/error-codes/samsung-door/) [Cooktop in use](https://stoverepair.center/error-codes/samsung-cooktop-in-use/) [All 15 Samsung codes](https://stoverepair.center/error-codes/#codes-samsung) Oven heating on other makes [AGA 010-014](https://stoverepair.center/error-codes/aga-010-014/) [BlueStar F80](https://stoverepair.center/error-codes/bluestar-f80/) [Dacor C-21](https://stoverepair.center/error-codes/dacor-c-21/) [Electrolux F10](https://stoverepair.center/error-codes/electrolux-f10/) [Fisher & Paykel A1](https://stoverepair.center/error-codes/fisher-and-paykel-a1/) [Frigidaire F10](https://stoverepair.center/error-codes/frigidaire-f10/) [GE F2](https://stoverepair.center/error-codes/ge-f2/) [JennAir F5E5](https://stoverepair.center/error-codes/jennair-f5e5/) [All 24 codes of this kind](https://stoverepair.center/error-codes/#family-oven) Samsung builds this ### Gas stove A stove with gas burners on top, whether its oven below runs on gas too or on electricity, fed by one gas line behind it and plugged into a wall outlet for the spark. Samsung builds this ### Electric stove A stove that runs entirely on electricity through a heavy cord and a large outlet behind it, with coil burners that lift out or a smooth glass stovetop with elements under it. Samsung builds this ### Induction stove A stove with a flat glass top that heats the pan itself through a magnetic field, run by touch keys and power boards, with an electric oven underneath. ## In Samsung's own words > This code occurs if the internal temperature rises abnormally high. [Samsung NE63A6711 electric range user manual](https://downloadcenter.samsung.com/downloadfile/ContentsFile.aspx?CDSite=UNI_CA&OriginYN=N&ModelType=N&ModelName=NE63A6711SS%2FAC&CttFileID=10077591&CDCttType=UM&VPath=UM%2F202502%2F20250219150835685%2FO_01._IB_FULL_NE5000A_NE63A6711_EN.pdf) [Samsung NX60A6711SS gas range user manual](https://downloadcenter.samsung.com/downloadfile/ContentsFile.aspx?CDSite=UNI_CA&OriginYN=N&ModelType=N&ModelName=NX60A6711SS%2FAA&CttFileID=11492203&CDCttType=UM&VPath=UM%2F202606%2F20260610192626878%2FO_01._DG68-01338A-09_IB_FULL_NX60A6711SS_AA_EN.pdf) Every code on this site is taken from the manufacturer's documentation, never from a forum or a parts listing. Where C-21 is documented: Printed in the information code tables of the NX60A6711SS gas and NE63A6711 electric Samsung manuals; the gas table shows its codes as pictures. ## Samsung C-21 stove 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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Press OFF/CLEAR and leave the oven door closed while it cools on its own. If it comes back, it needs a visit. ### Is C-21 on my Samsung stove dangerous? It means the oven went past its safe temperature and the control stepped in. Let it cool with the door shut, and if you see smoke from the oven or wiring, switch the breaker off and keep people away. ### What makes a Samsung oven overheat and show C-21? A blocked vent, foil on the oven floor or a relay that keeps the element or burner on can all push the heat up. A repeat of the code after the vent and foil are clear points to the controls. ### Why did C-21 appear on my Samsung stove during self-clean? Self-clean runs far hotter than baking, so a marginal part shows up there first. If the code returns during a normal bake too, the oven needs checking before it is used again. --- **[Read on the site: Samsung stove oven shows C-21 and shuts off](https://stoverepair.center/error-codes/samsung-c-21/)** **[Book a visit with StoveRepair.center](https://stoverepair.center/schedule/)**