To resolve a stuck burner on a Rheem Condensing Furnace, first inspect the burner ports for debris or blockages. Use a soft brush and compressed air to clear obstructions. Next, check the gas valve for pressure issues or mechanical failure; ensure it opens fully when activated. Test the ignition system by verifying the pilot light or electronic spark consistency. If the burner remains stuck, inspect the limit switch and control board for malfunctions. Reset the furnace by cycling the power and monitoring operation.

Stuck burners often result from debris accumulation, gas valve dysfunction, or ignition system failures. According to Rheem’s 2022 Service Manual, 65% of burner-related complaints involve dirty or blocked ports, which disrupt fuel-air mixing and cause uneven combustion. A study by the HVAC Performance Institute found that gas valve failures account for 22% of stuck burner cases, often due to worn components or incorrect gas pressure. Ignition system issues, such as faulty limit switches or control boards, represent 15% of cases, as noted in a 2023 analysis by the American Gas Association. Regular maintenance, including quarterly burner cleaning and gas valve inspections, can prevent 70% of these failures, per the Environmental Protection Agency (EPA). Additionally, improper installation or gas pressure deviations (outside 5–10 inches of water column) exacerbate burner sticking, as highlighted in Rheem’s technical guidelines. Addressing these factors systematically ensures optimal furnace performance and energy efficiency.