AERCO Control Modules are microprocessor-based circuit boards that manage boiler sequencing, burner operation, safety checks, and communication with building automation systems. Custom-programmed for each AERCO model, these modules monitor inputs such as temperature, pressure, and airflow to maintain optimal performance and safe operation. By replacing faulty controls with authentic AERCO Control Modules, service technicians can restore intelligent control functions, improve diagnostic capabilities, and ensure compliance with manufacturer safety protocols.