Description
The York S1-02419082030 Relay Sequencer Heating 24V is an electrical control part used in HVAC systems, for heating to manage the timing of heating elements. It operates by using a low-voltage signal to control higher-voltage circuits, allowing staged activation of heaters, blowers, or related components. Commonly installed in electric furnaces and air handlers, it ensures that heating elements energize in a controlled sequence rather than all at once. Within the system, the relay sequencer support regulates electrical load supports safe operation, and maintains consistent heating performance in HVAC systems
