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the 24Vac actuator motor or geartrain is likely the issue
ensuring accurate stroke and airflow modulation
Built to withstand the thermal demands of modern residential furnaces
Common Questions Will this switch resolve a 3-flash error code on my York furnace
York S1-THPU433-S Thermostat Refrigerant the 24Vac actuator motor orThe York S1 THPU433 S is a high resolution, 7 day programmable thermostat engineered for precise climate control in advanced 24V residential and commercial HVAC applications. Supporting 3 stages of heating and 2 stages of cooling (3H 2C), this unit provides the multi stage logic required for heat pumps and multi speed systems. It serves as the direct OEM replacement for the S1 TRPU32P7HW S and is backward compatible with several legacy York