--- title: "Cooktop control & dial repair" description: "Bertazzoni cooktop control and dial repair — a knob that spins without doing anything, a touch panel that answers some presses and not others, a control lock…" url: "https://bertazzonimiami.support/services/cooktop-control-and-dial-repair/" date_modified: "2026-08-27" Appliance type: "Cooktops and rangetops, Ranges" --- # Bertazzoni cooktop control & dial repair ### Three different repairs wearing one complaint - **Mechanical.** A knob that spins, a collar that has cracked, a shaft that has worn. Visible, cheap, quick. - **Electrical.** The switch behind the knob — the one that fires the spark on gas, or meters the element on radiant. Also cheap, also stocked. - **Electronic.** A glass touch panel and the board it talks to. More expensive, and worth separating carefully because the panel and the board are different parts with very different prices. ### The free answers, which are commoner than they should be Control locks. Demo mode. A pan sitting on a touch surface. Water under a cloth. Between them these account for a genuine share of the calls that come in as a failed control, and every one of them is cleared in a minute at no cost. We would rather find one of those than sell you a board. ### Why we test every position Controls age together. A switch that has failed on one burner very often has siblings a few months behind it, and the marginal cost of checking all of them during a visit you are already paying for is nothing. It is the difference between one appointment and three. ### What the repair costs Control and dial work starts at $145. Touch panels and boards are quoted separately once the panel has been separated from the board, which is a measurement rather than a guess. What this involves Knobs, switches and touch panels treated as three different repairs Control locks and settings ruled out before any part is named Every position exercised through its full range before we leave Rule out the settings Control locks, demo modes and child locks account for a real share of "it has stopped responding" calls, and they cost nothing to clear. It is the first thing checked and occasionally the last. Separate the knob from the switch On a gas cooktop the knob turns a valve and its switch tells the spark to fire. A knob that spins loosely is a collar or a shaft; a knob that turns properly and does nothing is the switch or the valve behind it. Different parts, different prices. Test a touch panel section by section A glass touch control that responds to some areas and not others is usually the panel rather than the board underneath, and a panel that responds to nothing at all is more often the board. Moisture and a cracked overlay are the two things that produce both symptoms at once. Exercise everything, not just the complaint Controls tend to fail in groups because they age together. Every position is run from off to full and back before the visit ends, so the second one does not become a second call next month. Three different repairs wearing one complaint Mechanical. A knob that spins, a collar that has cracked, a shaft that has worn. Visible, cheap, quick. Electrical. The switch behind the knob — the one that fires the spark on gas, or meters the element on radiant. Also cheap, also stocked. Electronic. A glass touch panel and the board it talks to. More expensive, and worth separating carefully because the panel and the board are different parts with very different prices. The free answers, which are commoner than they should be Control locks. Demo mode. A pan sitting on a touch surface. Water under a cloth. Between them these account for a genuine share of the calls that come in as a failed control, and every one of them is cleared in a minute at no cost. We would rather find one of those than sell you a board. Why we test every position Controls age together. A switch that has failed on one burner very often has siblings a few months behind it, and the marginal cost of checking all of them during a visit you are already paying for is nothing. It is the difference between one appointment and three. What the repair costs Control and dial work starts at $145. Touch panels and boards are quoted separately once the panel has been separated from the board, which is a measurement rather than a guess. ### The knob turns but nothing happens. That points behind the knob rather than at it. On gas, the valve stem or the switch that fires the spark; on electric, the infinite switch that meters power to the element. Both are ordinary parts. What is worth telling us is whether the burner does anything at all — a burner that sparks but never lights is a different repair from one that does neither. ### My touch panel only works in one corner. Usually the panel, and usually moisture. These controls sense through the glass, and a film of water — or a cloth left across the surface, or steam from a pan directly beneath — will make a panel behave exactly like a failing one. Dry it thoroughly and try again before you call; if it persists with a dry, clean surface, the panel is the repair. ### There is a lock symbol and I cannot clear it. Every one of these has a documented way out and it is usually holding one specific pad for several seconds. It is worth finding rather than guessing, because repeated random presses on some controls trigger a further lockout. If the manual is gone, tell us the model number and we will tell you the sequence over the phone, at no charge — it is not a repair and we are not going to charge for it. ### Is a control repair worth doing on an older cooktop? Knobs, collars, switches and valves — yes, almost always, they are inexpensive and available. A full touch control assembly on a discontinued model is where the answer can turn, and we will tell you what the part costs before anything is ordered rather than after. --- **[Read full article: Cooktop control & dial repair](https://bertazzonimiami.support/services/cooktop-control-and-dial-repair/)**