Tecnogas Incomplete Combustion / Incorrect Gas Type or Air Mixture

Oven or cooktop produces yellow, sooty flames and leaves black residue on cookware.

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Safety Warning

This repair may involve working with high voltage components or water connections. Always unplug the appliance before removing any panels.

If you are not confident in your ability to perform this repair safely, we strongly recommend contacting a professional technician.

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Possible Causes

Incorrect gas jets (LPG vs NG), Blocked burner air inlets, Misadjusted air shutters, Low primary air supply

How to Fix / Troubleshooting

Safety first: Sooty flames indicate unsafe combustion; address promptly.

Steps:

  • Verify that the Tecnogas appliance is configured for the correct gas type (natural gas or LPG) and that the appropriate injectors are installed.
  • Clean burner air inlets and ensure no debris is blocking them.
  • Adjust the air shutters (if present) to achieve a stable blue flame with minimal yellow tips.

If you are unsure about gas type conversion or injector sizing, contact a qualified technician.

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Repair Difficulty

Hard 4/5

Required Part

Burner Injectors (Jets) Set
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