If the inducer fan or pressure switches are failing

Thermal Protection: Includes an automatic reset thermal protector to prevent winding failure during temporary overload conditions

Designed to manage the ignition sequence and blower timing

the York S1-031-01955-000 Timer Board is the critical OEM replacement for managing CFM output and blower timing sequences

Trane RLY1663 Relay 319848-301 If the inducer fan orThe Trane RLY1663 Relay is a heavy duty, field proven HVAC enclosed relay designed for demanding commercial and residential applications. Operating at a 240V coil voltage with a 5A contact rating, this 3PDT general purpose relay provides critical isolation and switching for complex circuitry in air conditioners, heat pumps, and furnaces. The unit features fine wire gauge coils and a coil molded polyester housing to resist environmental degradation and