--- title: "Hestan Smart Burner showing ER05 | RangeRepair.center" description: "What ER05 means on Hestan Smart Burners, what to check before booking, and when it is not a failure at all." url: "https://rangerepair.center/error-codes/hestan-smart-burner-er05/" --- # Hestan Smart Burner showing ER05 ER05 is Hestan's ignition code for the Smart Burner. ## What ER05 actually means. ER05 is Hestan's ignition code for the Smart Burner. The burner tried to relight several times without success, so the range ended the cooking cycle rather than keep sending gas. Hestan range display · also shown as ER 05 What to do when ER05 shows on the range ### Kind of code Burners and ignition A burner was asked to light and the range did not sense a flame, or the spark kept firing after the flame was there. Moisture or food in the igniter and a cap sitting out of place are ruled out before the spark module or a switch is replaced. A smell of gas outranks any code: leave the house and phone the gas utility from outside. ### Usually leads to Burner and igniter repair Gas burners that will not light, keep ticking or burn with a weak, yellow or uneven flame, traced to the igniter, the spark switch, the module or the burner itself. ### Shows up as Range Burner Won't Light A gas burner on the range top clicks but never catches, lights only after a long delay, or does nothing at all when the knob is turned. ### Make Hestan A California maker of professional-style gas and dual-fuel ranges with a restaurant-kitchen background. ### Source Hestan KRD dual-fuel range use and care manual, Smart Burner codes Hestan KRDS smart ranges. Every Hestan sealed burner has its own spark module with flame sensing and automatic reignition. Hestan's 2026 indoor catalog no longer lists a KRDS model, so these codes concern smart ranges already installed. ## Before you book, in this order. Each step comes from Hestan's own guidance for ER05 on its ranges. Follow it to the end: the last card says whether this is a visit. 01 Turn the burner knob off. If you smell gas, leave the kitchen and call the gas utility from outside. 02 With the burner cold and dry, wipe the burner ports clean as the manual describes; if ER05 comes back, book a visit and leave the gas parts to the technician. ### Still there? It usually turns into [burner and igniter repair](https://rangerepair.center/services/burner-and-igniter-repair/). Book with the code and the model number. ### What not to do ER05 is not the same as ER04, which only means the power dropped during a cooking cycle. ## What you may notice with it. The range problems ER05 tends to arrive with. Answer these at the range before anyone is booked. [All problems](https://rangerepair.center/problems/) Before you call ### [Range Burner Won't Light](https://rangerepair.center/problems/burner-wont-light/) [All 6 causes, cheapest first](https://rangerepair.center/problems/burner-wont-light/) It also comes with - [**Range Burner Keeps Clicking**](https://rangerepair.center/problems/burner-keeps-clicking/) - [**Range Gas Smell**](https://rangerepair.center/problems/range-gas-smell/) - [**Range Error Code**](https://rangerepair.center/problems/range-error-code/) Problem ### Range Burner Won't Light 6 causes, cheapest first Where ER05 usually leads ## Burner and igniter repair. **Gas burner igniter, spark switch or burner head · low.** Book a visit [What the job involves](https://rangerepair.center/services/burner-and-igniter-repair/) ## Hestan ranges. A California maker of professional-style gas and dual-fuel ranges with a restaurant-kitchen background. [Hestan range repair](https://rangerepair.center/brands/hestan/) More Hestan codes [ERR04](https://rangerepair.center/error-codes/hestan-range-err04/) [ERR20](https://rangerepair.center/error-codes/hestan-range-err20/) [ER01](https://rangerepair.center/error-codes/hestan-smart-burner-er01/) [ER03](https://rangerepair.center/error-codes/hestan-smart-burner-er03/) [ER06](https://rangerepair.center/error-codes/hestan-smart-burner-er06/) [Er 03](https://rangerepair.center/error-codes/hestan-induction-er03/) [Er 47](https://rangerepair.center/error-codes/hestan-induction-er47/) [E2](https://rangerepair.center/error-codes/hestan-induction-e2/) [E6](https://rangerepair.center/error-codes/hestan-induction-e6/) [E8](https://rangerepair.center/error-codes/hestan-induction-e8/) [U 400](https://rangerepair.center/error-codes/hestan-induction-u400/) Hestan 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. Hestan 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. Hestan 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 Hestan's own words > Burner could not be ignited after several reignition attempts. Cooking cycle terminated. [Hestan KRD dual-fuel range use and care manual, Smart Burner codes](https://cdn.brandfolder.io/W2HABDQZ/as/wnhpnwf3n939j79g2wfp2z7h/Dual_Fuel_Range_Use_and_Care_Manual.pdf) [Hestan KRD dual-fuel range use and care manual, re-ignition](https://cdn.brandfolder.io/W2HABDQZ/as/wnhpnwf3n939j79g2wfp2z7h/Dual_Fuel_Range_Use_and_Care_Manual.pdf) Every code on this site is taken from the manufacturer's documentation, never from a forum or a parts listing. Hestan KRDS smart ranges. Every Hestan sealed burner has its own spark module with flame sensing and automatic reignition. Hestan's 2026 indoor catalog no longer lists a KRDS model, so these codes concern smart ranges already installed. ## Hestan ER05 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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Turn the burner knob off. If you smell gas, leave the kitchen and call the gas utility from outside. If it comes back, it needs a visit. ### Is ER05 on my Hestan Smart Burner a gas safety issue? The range stopped the cycle after the burner would not light, which is the safe response. If you smell gas, leave and call the gas utility from outside; otherwise turn the knob off and let the burner cool. ### What usually causes ER05 on a Hestan Smart Burner? Hestan lists dirty burner ports or igniter, and a worn igniter. Cleaning is the owner's part; replacing the igniter is a job for a technician. --- **[Read on the site: Hestan Smart Burner showing ER05 | RangeRepair.center](https://rangerepair.center/error-codes/hestan-smart-burner-er05/)** **[Book a visit with RangeRepair.center](https://rangerepair.center/schedule/)**