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Error code · Range

Bertazzoni DFS XT Range Behavior “Flame Large, Distorted or Yellow”: clogged ports or wrong gas type

On Bertazzoni DFS XT dual-fuel ranges, such as the MAS304DFSXT and PRO366DFSXT, a burner that ignites but shows a large, distorted or yellow flame points to clogged burner ports, or to a range that is not…

High · stop use, call now
Code
Flame Large Distorted or Yellow
Appliance
Range
Brand
Bertazzoni
Warranty
30-day workmanship

What Flame Large Distorted or Yellow means

On Bertazzoni DFS XT dual-fuel ranges, such as the MAS304DFSXT and PRO366DFSXT, a burner that ignites but shows a large, distorted or yellow flame points to clogged burner ports, or to a range that is not set for the gas type supplied. The range may need a gas conversion done by a qualified technician. The owner sees an uneven, lazy yellow flame instead of a steady blue one.

Common causes of Flame Large Distorted or Yellow

  • Clogged burner ports from spills or food
  • Burner parts not seated or assembled correctly after cleaning
  • The range not set up for the gas type on site, natural gas or propane
✓ One safe check you can try

1. Turn the burner off and let it cool. 2. Remove the cap and ring and clean the ports with a soft brush or toothpick, then dry them. 3. Reassemble and seat everything flat. 4. If the flame is still yellow or uneven, stop using that burner and call us. 5. If you smell gas at any point, leave the house and call the gas utility from outside.

! Why to stop there
  • A yellow flame can mean incomplete combustion and carbon monoxide.
  • Gas conversion changes orifices and settings that must be done to code.
  • Poking at ports with a pin can enlarge them and ruin the flame.
  • A wrongly converted range is a fire risk.
Opening a panel yourself does not automatically cancel a manufacturer warranty, but it can cause accidental damage, and some manufacturers set their own service conditions. Check your warranty terms, or ask us, before deciding.
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Other Range codes

Flame Large Distorted or YellowFlame Large Distorted or Yellow questions
Why is my flame yellow instead of blue?

On these ranges the cause is clogged ports or the wrong gas setting. Clean and dry the burner first. If it stays yellow, the gas type setup should be checked.

Do I need a gas conversion?

Only if the range was set for natural gas and you use propane, or the reverse. That conversion has to be done by a qualified technician; we do it and quote the price in writing first.

Is a yellow flame dangerous?

It can produce carbon monoxide, so stop using the burner if cleaning does not fix it. Ventilate the kitchen and, if you smell gas, leave and call the gas utility from outside.

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Still seeing Flame Large Distorted or Yellow?

A technician diagnoses it on site and gives you the price in writing before any work starts.

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