Staff Answer
Sep 27, 2026 - 11:56 AM
There's no adjustment on that valve. Carbon building up on the burner usually means a dirty or wrong orifice, a missing or sooty flue baffle, or low or wrong LP pressure. Clean the flue with a flue brush, check the baffle, and have the LP pressure checked. The 639572/50859 assembly replaces the valve, burner, orifice and electrode together, and it's in stock.
If you have any questions, just reach out at info@rvfridgeguys.com or call us at 800-712-8822. You can find everything we carry at www.rvfridgeguys.com.
