What Burner Goes Out When Knob Released Means
Bertazzoni fits flame failure devices to these burners as standard - a safety valve that only stays open while a sensor confirms there is a flame on it. The manual explains that the sensor needs a few seconds of heat before it holds, which is why the knob has to be held in after lighting.
Common Causes of Burner Goes Out When Knob Released
- The knob released too quickly for the flame failure sensor to warm up
- A sooted or corroded flame sensor tip no longer heating properly
- A burner cap sitting off-center so the flame misses the sensor tip
🔧 One Safe Check You Can Try
Light the burner and keep the knob pressed in for several seconds before letting go, giving the thermocouple time to warm. If it still drops out after a proper hold, turn the knob to OFF, close the gas shut-off valve to the range and let the burner cool before you look further.
⚠ Why You Shouldn't Go Further Than That
- Isolate the gas at the appliance valve before the burner assembly is disturbed, because this is the one part of a range where a mistake releases unburned gas into the room.
- The flame failure device is the safety that shuts the gas off when a flame blows out, so anything that bypasses or props it open removes exactly the protection it exists to give.
- Scraping at a sensor tip with abrasives takes off the surface it depends on, and a damaged sensor tends to fail closed, leaving the burner unusable rather than unsafe.
Opening a panel to inspect or repair something yourself doesn't automatically cancel your manufacturer's warranty — but it can risk accidental damage, and some manufacturers do have specific service conditions. Check your product's warranty terms, or ask us, before deciding.