York S1-024-19082-039 Sequencer Relay

The York S1-024-19082-039 Sequencer Relay is a mission-critical 24V electric heat sequencer engineered for precise staging of heating elements and blower motors in residential air handlers and furnaces. This single-pole double-throw (SPDT) component features a thermal bimetal disc design, providing reliable M1-M2 on-delay timings to prevent high amperage spikes during initial startup. Designed as a direct O.E.M. replacement for York heating systems, this sequencer relay ensures the blower motor engages only after the heat strips have reached operating temperature, maximizing airflow efficiency and preventing cold drafts. Field technicians prefer this HVAC contactor alternative for its robust terminal construction and consistent cycle rates under varying electrical loads. Replacing a faulty heating element sequencer with this genuine S1-024-19082-039 prevents premature heater bank failure and maintains the integrity of the control circuit within the HVAC cabinet.

• Ensures staggered element activation to protect the primary circuit breaker from excessive inrush current.
• Compatible with both constant torque and PSC blower motors in various York and Coleman localized air handlers.
• Features high-temp resistant quick-connect terminals for secure wiring in high-density control boxes.
• Operates on a standard 24V AC control voltage signal from the thermostat or furnace control board.
• Constructed with a heavy-duty mounting bracket for universal orientation within the air handler chassis.

What are the typical timing specs for this York sequencer?
The York S1-024-19082-039 typically operates with an on-delay of 1 to 20 seconds and an off-delay ranging from 40 to 90 seconds, ensuring the heat exchanger cools sufficiently before the blower shuts down.

Can this relay replace a multi-stack sequencer?
This is a single-timing heat sequencer. If your current unit controls multiple stages with different timings, you may need a multi-pole stack or multiple S1-024-19082-039 units wired in a series-parallel configuration.

Will this fix a blower motor that stays on constantly?
If the M1-M2 terminals are fused shut, the blower will run continuously. Testing for continuity across these terminals while the 24V coil is de-energized will confirm if the sequencer requires replacement.

Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.