York S1-7990-317P/A Motor

The York S1-7990-317P/A Motor is a high-performance inducer motor specifically engineered for gas downflow and mobile home furnace applications. Operating at 120Vac with a single phase configuration, this unit delivers a consistent 2950 RPM to ensure optimal drafting and proper combustion venting. Designed with a robust C-frame construction and a CCW lead end rotation, this booster motor is an essential component for maintaining static pressure and clearing flu gases before the ignition cycle begins.

For field installations and direct swaps, the York S1-7990-317P/A is primarily utilized in DGAM (056-075), DGAT (056-090), and DLAS (056-075) series models. Its precise counter-clockwise rotation and reliable 120V power draw make it a staple for contractors servicing Coleman and York furnace lines that require a high-speed venter to prevent pressure switch trip-outs. When troubleshooting restricted airflow or motor seizure in downflow configurations, this OEM replacement motor provides the technical specs necessary for a seamless fit and long-term mechanical reliability.

Key Benefits

• Specifically designed for York and Coleman furnace inducer assembly integration in DGAM, DGAT, and DLAS models.
• Operates at a high-speed 2950 RPM to maintain necessary flue gas velocity and prevent combustion staging errors.
• Compatible with standard 120V single-phase residential and mobile home electrical systems.
• Durable C-frame inducer motor design ensures heat dissipation during continuous heating cycles.
• Precision CCW rotation matches factory specifications for specialized downflow venting requirements.

Common Questions

Will this motor fix a furnace that is "clicking" but not igniting?
If your furnace diagnostic codes indicate a "pressure switch stuck open" error, the York S1-7990-317P/A inducer may have failed. This motor must pull a vacuum to close the pressure switch before the burners ignite.

Is the S1-7990-317P/A compatible with variable speed systems?
No, this is a single-phase 2950 RPM motor designed for on/off operation in specific DGAM, DGAT, and DLAS series furnaces. Always verify the voltage and shaft rotation (CCW) before installation.

Does this motor include the fan blade or housing?
This part number refers to the 120V motor itself. Technicians typically reuse the existing blower wheel and mounting plate unless they are also damaged or out of balance.

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.