Copeland Comfort Control (White Rodgers) 24A34-3 Heat Sequencer

The Copeland Comfort Control (White Rodgers) 24A34-3 Heat Sequencer is a professional-grade 2-switch electric heat sequencer engineered for precise timing in electric furnaces and heat pump systems. Designed as a direct replacement for F77-5411, this unit manages 24V input control to activate heating elements and blower motors in a staggered sequence, preventing excessive inrush current. It features 1-20 second On timings and 40-110 second Off timings, ensuring the system maintains airflow until the heat exchangers have sufficiently cooled. For contractors, the multi-poise mounting and standard terminal markings allow for a seamless HVAC sequencer installation across various manufacturer platforms, including direct replacement for Honeywell, Mars, and TOD controls. This DPST electric heat sequencer supports combination loads with double quick-connect terminals, facilitating a reliable 24V furnace sequencer repair that restores proper fan-to-element synchronization in multi-stage electric heat applications.

• Broad Compatibility: Serves as a universal electric furnace sequencer replacement for major brands like Honeywell, Klixon, and Gemline.
• Reliable Fan Interlock: The M1-M2 contacts ensure the blower initiates first and terminates last for safe heat dissipation.
• High Load Capacity: Rated for 25.0A resistive and 14.0 FLA / 72.0 LRA at 120VAC, accommodating heavy heating element demands.
• Industrial Durability: Maintains operational integrity within a wide ambient temperature range of -50°F to 165°F.

What does a heat sequencer do in an electric furnace?
It provides a time-delayed sequence for energized heating elements to prevent electrical overloads and ensures the blower motor continues running until the residual heat is cleared from the plenum.

Can the 24A34-3 replace a sequencer with more switches?
This model is a 2-switch sequencer. While multiple units can sometimes be wired in series for staging, it is best practice to match the switch count of the original OEM part unless the circuit is specifically redesigned by a qualified HVAC technician.

Is the 24A34-3 compatible with 240V systems?
Yes, while the control heater uses 24V, the contacts are rated for 120V, 240V, and 480V loads, making it standard for residential 240V electric furnaces.

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.