A gas burner flame should normally be stable and predominantly blue. An occasional orange flicker can come from salts, dust, or humidity, but a persistent yellow or orange flame, weak flame, soot, or accompanying odor may indicate poor combustion. Do not make internal gas-supply adjustments yourself.
Notice whether the color is brief or persistent
A few orange flickers after cleaning, humidifier use, or cooking with salts do not mean the same thing as burners staying yellow throughout operation. Turn the burner off and let it cool before any accessible cleaning.
Clean burner caps and ports only when cool
A misaligned cap or food debris can distort the flame. Remove only parts the manual identifies as user-removable, clean without enlarging ports, and reinstall them completely dry.
Soot or a persistently yellow flame needs service
If cookware develops soot, the flame lifts, combustion is irregular, or the color does not improve after basic cleaning, stop using that burner and arrange appliance and ventilation service.
If you smell gas, leave the home
Do not operate switches or try to test burners. Evacuate and contact the gas utility or emergency services from outside; a carbon monoxide (CO) alarm does not replace the response to a fuel-gas odor.
Sources
- U.S. Consumer Product Safety Commission — Winter Weather Safety Tips — If a gas leak is smelled or heard, leave and contact gas authorities from outside without operating electronics indoors.