Gas hob burner produces yellow, sooty, or uneven flame

Gas safety: Turn off burners and allow them to cool before disassembly.

Cleaning and setup:

• Remove burner caps and crowns; clean all ports and slots with a soft brush and non-metallic tool.
• Ensure burner caps are correctly seated and level.
• Check that the hob is installed for the correct gas type (natural gas vs LPG) and that the appropriate injectors are fitted (see rating plate and manual).
• Ensure adequate ventilation in the kitchen; do not block air inlets.

If flames remain yellow or noisy after cleaning, a gas technician should check gas pressure and injector sizing.