Whirlpool Incomplete Combustion / Venting Issue

Sooting or yellow lazy flame on gas Whirlpool water heater

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

Restricted flue, insufficient combustion air, dirty burner, incorrect gas pressure

Safety first: Turn OFF gas and power. Sooting can indicate carbon monoxide risk.

Checks:

Inspect burner for dust, lint, or rust; clean thoroughly.
Verify combustion air openings are clear and heater is not in a confined, unventilated space.
Check vent connector and chimney for obstructions.

Corrective actions:

After cleaning and ensuring proper air supply, relight and observe flame; it should be mostly blue with small yellow tips.
If flame remains yellow or sooting continues, have a qualified technician check gas pressure and venting system.

Hard 4/5

Main Burner / Vent System

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