Description
The York S90-380 SPST Fan Relay 24V 50/60Hz is an electrical switching part used to control fan motor operation. It receives a low-voltage signal from the thermostat or control board, and uses an internal coil to open or close contacts that supply power to the blower or condenser fan circuit in HVAC systems. It is commonly installed in furnaces air handlers, and packaged units where precise fan activation is required during heating cooling or circulation modes. As part of the control relay assembly it ensures coordinated fan operation proper air flow delivery, and timed switching based on system demand.
