Always install the sensor on insulated conductors to ensure safe operation and compliance with local electrical codes

SPNO Close On Fall Logic: Direct electrical match for specific York and Coleman inducer motor pressure monitoring

Specifically designed for Watts Series 3001 and compatible with several other models in the RK-3000 collection

Thermal Protection: Prevents nuisance tripping by staggering the electrical draw of resistive heating elements

3 red flashes typically indicate a pressure switch that failed to close

Nordyne 664344R Check Valve 326070-701 Always install the sensor onThe Nordyne 664344R is a high performance R410A 3 Ton TXV Check Valve designed for precise refrigerant metering in residential and light commercial HVAC systems. This OEM Nordyne replacement part acts as a critical thermal expansion device, sensing evaporator temperature and pressure to regulate flow and maintain the ideal superheat. Engineered for 3 ton capacity units, the 664344R check valve ensures consistent cooling performance and prevents