If your boiler starts and then shuts off after a few seconds (short cycling) or displays a flame failure error code

Simplified Installation: Features standard wiring terminals for a direct fit in compatible HVAC cabinets

ensuring long-term system stability and safety compliance on the job site

Built to handle a maximum speed of 6000 RPM

Resideo R24AA3004 Heat Sequencer 322055-301 If your boiler starts andThe Resideo R24AA3004 Heat Sequencer is a field proven solution for staging electric heating elements in furnaces and heat pump applications. This single switch, solid state PTC (Positive Temperature Coefficient) heater provides precise control over the timing of heating banks to prevent circuit overload and ensure consistent discharge air temperatures. Operating on a 24Vac input voltage, this sequencer features a calibrated 30 90 second on timing