CTC Improper Combustion / Incomplete Burning

CTC gas water heater has a yellow or sooty flame

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.

Possible Causes

Dirty burner, Blocked air intake, Incorrect gas pressure, Wrong orifice size

Safety first: Turn off power and gas. Sooting can indicate dangerous carbon monoxide production; ventilate the area.

Steps to check:

Inspect and clean the burner assembly to remove dust, lint, or rust.
Check the combustion air intake for obstructions.
Have a licensed technician verify gas pressure and orifice sizing and adjust as needed.

Professional Required 5/5

Burner Assembly

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