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The York S1-028-12403-700 Sheave is a professional-grade
Bidirectional Versatility: The ±0
While this is a Lennox OEM part
Rated for a flow capacity of 110 SCFM
High-Temperature Durability: Specialized ceramic insulation prevents electrical leakage in extreme heat
York S1-031-01955-000 Timer Board Refrigerant The York S1-028-12403-700 Sheave isFor service technicians and contractors maintaining York, Coleman, or Luxaire equipment, the York S1 031 01955 000 Timer Board is the critical OEM replacement for managing CFM output and blower timing sequences. This CFM Fan Timer Board serves as the central control logic for residential furnaces and air handlers, utilizing a 24V AC interface to synchronize fan "on" and "off" delays. By regulating the blower motor timing, this board ensures the heat
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