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Chrome-bevel sheet on grid paper — specs and return notes filed under the bay.
Automatic Reset: Self-correcting design restores system power without requiring a manual service call
High-Durability Construction: Built to withstand the harsh environment of a furnace plenum
This HVAC ignition module features flash code diagnostics via a dedicated LED to streamline troubleshooting for field technicians
Using an OEM pressure switch ensures the safety circuit functions exactly as the engineers intended
Armstrong Furnace R07489B003 Relay Automatic Reset: Self-correcting design restoresThe Armstrong Furnace R07489B003 Relay is a critical 24V electromechanical component designed for precise switching in residential heating systems. This HVAC blower relay serves as a direct replacement for specific Armstrong and Concord furnace models, ensuring reliable signal transmission between the thermostat and the high voltage blower motor or inducer. Operating on a 24VAC coil voltage, this relay is engineered for high duty cycles, managing the