--- title: "Dacor Modernist wall oven showing C-21 | OvenRepair.center" description: "What C-21 means on Dacor Modernist wall ovens, what to check before booking, and when it is not a failure at all." url: "https://ovenrepair.center/error-codes/dacor-c-21/" --- # Dacor Modernist wall oven showing C-21 C-21 on a Dacor Modernist oven reports an abnormally high internal temperature, meaning the cavity is hotter than the control expects for what it was asked to do. ## What C-21 actually means. C-21 on a Dacor Modernist oven reports an abnormally high internal temperature, meaning the cavity is hotter than the control expects for what it was asked to do. Dacor oven display What to do when C-21 shows on the oven ### Kind of code Heating The control asked for heat and the cavity did not warm the way it expected. A bake or broil element that has opened or blistered is the usual answer; the wiring to it and the relay that switches it are checked before a board is blamed. ### Usually leads to Bake and broil element repair An electric oven that stays cold, bakes only from above or will not broil, traced to the element, its terminals or the relay that feeds it. ### Shows up as Oven Won't Turn Off The oven keeps heating after you press cancel or off, or it heats with no mode selected at all. ### Make Dacor A luxury brand owned by Samsung, whose built-in ovens include steam-assisted and combination models. ### Source Dacor user manual: Modernist built-in electric wall oven DOB30M977 Documented for the Dacor Modernist DOB30M977 wall oven family. ## Before you book, in this order. Each step comes from Dacor's own guidance for C-21 on its ovens. Follow it to the end: the last card says whether this is a visit. 01 Press OFF. If the oven keeps heating or you see smoke, switch it off at the breaker and keep the door closed. 02 Once it is cool, disconnect power for at least 30 seconds and reconnect. 03 If C-21 appears again, book a visit before cooking with it. ### Still there? It usually turns into [bake and broil element repair](https://ovenrepair.center/services/bake-and-broil-element-repair/). Book with the code and the model number. ### What not to do C-21 is not a normal part of self-clean or broiling. It is the control saying the temperature is out of bounds. ## What you may notice with it. The oven problems C-21 tends to arrive with. Answer these at the oven before anyone is booked. [All problems](https://ovenrepair.center/problems/) Before you call ### [Oven Won't Turn Off](https://ovenrepair.center/problems/oven-wont-turn-off/) [All 5 causes, cheapest first](https://ovenrepair.center/problems/oven-wont-turn-off/) It also comes with - [**Oven Temperature Not Accurate**](https://ovenrepair.center/problems/oven-temperature-wrong/) - [**Oven Error Code**](https://ovenrepair.center/problems/oven-error-code/) Gas, fire or electrical risk ### Oven Won't Turn Off 5 causes, cheapest first Where C-21 usually leads ## Bake and broil element repair. **Bake or broil element · low.** Book a visit [What the job involves](https://ovenrepair.center/services/bake-and-broil-element-repair/) ## Dacor ovens. A luxury brand owned by Samsung, whose built-in ovens include steam-assisted and combination models. [Dacor oven repair](https://ovenrepair.center/brands/dacor/) More Dacor codes [C-d0](https://ovenrepair.center/error-codes/dacor-c-d0/) [C-d1](https://ovenrepair.center/error-codes/dacor-c-d1/) [C-F2](https://ovenrepair.center/error-codes/dacor-c-f2/) [C-20](https://ovenrepair.center/error-codes/dacor-c-20/) [C-23](https://ovenrepair.center/error-codes/dacor-c-23/) [C-70](https://ovenrepair.center/error-codes/dacor-c-70/) [C-72](https://ovenrepair.center/error-codes/dacor-c-72/) [C-A2](https://ovenrepair.center/error-codes/dacor-c-a2/) Heating on other makes [Electrolux F10](https://ovenrepair.center/error-codes/electrolux-f10/) [Fisher & Paykel A1](https://ovenrepair.center/error-codes/fisher-and-paykel-a1/) [Frigidaire F10](https://ovenrepair.center/error-codes/frigidaire-f10/) [GE Profile F6](https://ovenrepair.center/error-codes/ge-profile-advantium-f6/) [GE F2](https://ovenrepair.center/error-codes/ge-f2/) [JennAir F4 E0](https://ovenrepair.center/error-codes/jennair-f4e0/) [Kenmore F3/E2](https://ovenrepair.center/error-codes/kenmore-f3-e2/) [LG F-9](https://ovenrepair.center/error-codes/lg-f-9/) [All 20 codes of this kind](https://ovenrepair.center/error-codes/#family-heating) Dacor 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. Dacor 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. Dacor builds this ### Steam oven A built-in oven that adds water vapor to the cavity, alone or with convection heat, fed from a tank or a water line. ## In Dacor's own words > Abnormally high internal temp [Dacor user manual: Modernist built-in electric wall oven DOB30M977](https://image-us.samsung.com/SamsungUS/dacor/products/cooking/built-in-oven/dob30m977ds/download/DACOR-Modernist-WallOven-30-Double-Wall-Oven-User-Manual.pdf) [Dacor user manual: Modernist built-in electric wall oven DOB30M977](https://image-us.samsung.com/SamsungUS/dacor/products/cooking/built-in-oven/dob30m977ds/download/DACOR-Modernist-WallOven-30-Double-Wall-Oven-User-Manual.pdf) Every code on this site is taken from the manufacturer's documentation, never from a forum or a parts listing. Documented for the Dacor Modernist DOB30M977 wall oven family. ## Dacor C-21 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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Press OFF. If the oven keeps heating or you see smoke, switch it off at the breaker and keep the door closed. If it comes back, it needs a visit. ### My Dacor showed C-21 and is still very hot. What should I do? Press OFF, and if it keeps heating, cut power at the breaker and leave the door shut while it cools. Book a visit before you use it again. ### Can a long broil session trigger C-21 on my Dacor? The manual lists C-21 only as an abnormally high internal temperature and does not tie it to any mode. Treat it as a real overheat until a technician says otherwise. --- **[Read on the site: Dacor Modernist wall oven showing C-21 | OvenRepair.center](https://ovenrepair.center/error-codes/dacor-c-21/)** **[Book a visit with OvenRepair.center](https://ovenrepair.center/schedule/)**