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To prevent furnace short cycling or nuisance "no-flame" error codes
snap-action switch for mission-critical environmental control applications
Technicians should verify lead length and capacitor ratings during installation to prevent premature stator failure or overheating in restricted venting scenarios
which reduces diagnostic time and ensures the electric furnace control relay maintains the manufacturer-specified sequence of operation for optimal discharge air temperatures and component longevity
Lennox 49W64 Reversing Valve 30067439-890 To prevent furnace short cyclingThe Lennox 49W64 Reversing Valve is a critical 4 way component engineered for heat pump refrigerant flow control in residential and light commercial systems. Operating with a 24V solenoid coil, this valve facilitates the essential transition between heating and cooling modes by redirecting discharge gas from the compressor. Designed as a direct OEM replacement part, the 49W64 is electrically and mechanically identical to Lennox 49W6401, ensuring