The Amana-Goodman 20197311 Pressure Switch is a critical safety component designed for specific high-efficiency Goodman and Amana gas furnaces. This SPST (Single Pole Single Throw) induction draft pressure switch is factory-calibrated to trip at a -.60" WC (Water Column) set point, ensuring the inducer motor generates sufficient negative pressure before the ignition sequence begins. Built for durability in high-cycle environments, it features a 1/4" barb connection for seamless integration with standard vacuum tubing. This OEM replacement pressure switch prevents hazardous operation by monitoring for blocked vents, flue obstructions, or inducer motor failure. When diagnosing furnace error codes related to pressure switch stuck open or closed, installing this genuine 20197311 vacuum switch ensures the system maintains precise combustion air ratios and meets manufacturer specifications for air proving logic. Key Technical Benefits Precise Calibration: Factory-set at -.60" WC to ensure accurate safety cut-outs and prevent short-cycling. OEM Compatibility: Designed specifically for Goodman and Amana furnace models requiring a single-stage pressure switch. Durable Construction: Engineered to withstand the heat and moisture typical of condensing gas furnace applications. Standardized Fit: Features a 1/4" barb and spade terminal connections for quick field replacement and reduced downtime. Common Questions What are the symptoms of a failing 20197311 pressure switch? Common signs include the inducer motor running without ignition, furnace lockout with a 3-flash or 2-flash code, or the switch failing to close due to a ruptured diaphragm or moisture buildup. Can I use a switch with a different WC rating? No. Using a switch with a different Water Column set point will lead to unsafe operating conditions or nuisance trips. Always match the -.60" WC rating of the original 20197311 part. How do I test this Amana-Goodman vacuum switch? Technicians should use a manometer to verify the inducer is pulling at least -.60" WC and a multimeter to check for continuity across the terminals when the negative pressure is applied. Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.
