check for an open internal coil

if the diagnostic trace indicates a failure in the relay's ability to switch between high and low speed taps

Key Benefits: Factory-Balanced Geometry: The 3-blade design is OEM-precision balanced to eliminate mechanical vibration and extend the service life of the fan motor

Vault-Ready Design: The sealed spring cage protects internal components from external environmental hazards

York S1-031-01955-000 Timer Board THPU32HP7Y check for an open internalFor 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