--- title: "Wolf legacy dual-fuel range showing COMM ERR" description: "What COMM ERR means on Wolf legacy dual-fuel ranges, what to check before booking, and when it is not a failure at all." url: "https://rangerepair.center/error-codes/wolf-df-comm-err/" --- # Wolf legacy dual-fuel range showing COMM ERR COMM ERR is Wolf's message for lost communication between the display and the oven controller on a legacy dual-fuel range. ## What COMM ERR actually means. COMM ERR is Wolf's message for lost communication between the display and the oven controller on a legacy dual-fuel range. Owners usually find the control panel stops responding at the same time. Wolf range display What to do when COMM ERR shows on the range ### Kind of code Controls and communication The display, the main board or the induction power board lost contact with one another, or one of them failed its own self-check. A power dip, a loose cable or moisture from a boil-over is ruled out before a board is replaced, and a range that keeps heating while this code shows is switched off at the breaker. ### Usually leads to Knobs, switches and controls Knobs that spin or crack, touch keys that do nothing, blank displays, clocks that reset and control boards that switch the wrong thing. ### Shows up as Range Control Panel Not Responding The touch keys or knobs on the range do nothing, only some keys work, the display is blank or frozen, or it beeps without starting. ### Make Wolf The cooking brand of the Wisconsin-based Sub-Zero Group, known for red-knobbed gas, dual-fuel and induction ranges. ### Source Wolf answer: legacy dual-fuel range, COMM ERR Legacy Wolf dual-fuel ranges. ## Before you book, in this order. Each step comes from Wolf's own guidance for COMM ERR on its ranges. Follow it to the end: the last card says whether this is a visit. 01 Switch the breaker off for about 30 seconds and back on, then try the oven. 02 If COMM ERR stays, book a visit and describe what the panel does when you touch it. ### Still there? It usually turns into [knobs, switches and controls](https://rangerepair.center/services/knobs-switches-and-controls/). Book with the code and the model number. ### What not to do COMM ERR is not a Wi-Fi or app problem; it describes a link inside the range. ## What you may notice with it. The range problems COMM ERR tends to arrive with. Answer these at the range before anyone is booked. [All problems](https://rangerepair.center/problems/) Before you call ### [Range Control Panel Not Responding](https://rangerepair.center/problems/control-panel-not-responding/) [All 5 causes, cheapest first](https://rangerepair.center/problems/control-panel-not-responding/) It also comes with - [**Range Oven Not Heating**](https://rangerepair.center/problems/range-oven-not-heating/) - [**Range Error Code**](https://rangerepair.center/problems/range-error-code/) Problem ### Range Control Panel Not Responding 5 causes, cheapest first Where COMM ERR usually leads ## Knobs, switches and controls. **Knobs, keypad or control board · moderate.** Book a visit [What the job involves](https://rangerepair.center/services/knobs-switches-and-controls/) ## Wolf ranges. The cooking brand of the Wisconsin-based Sub-Zero Group, known for red-knobbed gas, dual-fuel and induction ranges. [Wolf range repair](https://rangerepair.center/brands/wolf/) More Wolf codes [01](https://rangerepair.center/error-codes/wolf-df-01/) [02](https://rangerepair.center/error-codes/wolf-df-02/) [03](https://rangerepair.center/error-codes/wolf-df-03/) [0E](https://rangerepair.center/error-codes/wolf-df-0e/) [COOL FAN](https://rangerepair.center/error-codes/wolf-df-cool-fan/) [ERR OC](https://rangerepair.center/error-codes/wolf-df-err-oc/) [PF](https://rangerepair.center/error-codes/wolf-df-pf/) [03](https://rangerepair.center/error-codes/wolf-ir-03/) [E2](https://rangerepair.center/error-codes/wolf-ir-e2/) [E8](https://rangerepair.center/error-codes/wolf-ir-e8/) [47](https://rangerepair.center/error-codes/wolf-ir-47/) Controls and communication on other makes [AGA FE](https://rangerepair.center/error-codes/aga-fe/) [BlueStar F20](https://rangerepair.center/error-codes/bluestar-range-f20/) [Bosch e005](https://rangerepair.center/error-codes/bosch-e005/) [Café F7](https://rangerepair.center/error-codes/cafe-f7/) [Dacor C-d0](https://rangerepair.center/error-codes/dacor-range-c-d0/) [Electrolux Err](https://rangerepair.center/error-codes/electrolux-err-number/) [Fisher & Paykel F + number](https://rangerepair.center/error-codes/fisher-and-paykel-range-f-number/) [Frigidaire F1](https://rangerepair.center/error-codes/frigidaire-f1/) [All 67 codes of this kind](https://rangerepair.center/error-codes/#family-communication) Wolf 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. Wolf 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. Wolf 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 Wolf's own words > Communication lost with the oven controller [Wolf answer: legacy dual-fuel range, COMM ERR](https://www.subzero-wolf.com/assistance/answers/dual-fuel-range-comm-err-error) [Wolf answer: legacy dual-fuel range, COMM ERR](https://www.subzero-wolf.com/assistance/answers/dual-fuel-range-comm-err-error) Every code on this site is taken from the manufacturer's documentation, never from a forum or a parts listing. Legacy Wolf dual-fuel ranges. ## Wolf COMM ERR 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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Switch the breaker off for about 30 seconds and back on, then try the oven. If it comes back, it needs a visit. ### Does COMM ERR mean my Wolf range needs a new control board? Not necessarily. The message only says the display and oven controller stopped talking, and a loose connection can do that as well as a board. Try the breaker reset first, then let a technician trace the link. ### Why does my Wolf control panel ignore me when COMM ERR is shown? Wolf ties the unresponsive panel to this same lost link: your touches reach the display, but the display cannot pass them on to the oven controller. --- **[Read on the site: Wolf legacy dual-fuel range showing COMM ERR](https://rangerepair.center/error-codes/wolf-df-comm-err/)** **[Book a visit with RangeRepair.center](https://rangerepair.center/schedule/)**