Zehnder PCB-MIN-CAQ 0550294 Printed Circuit Board

The Zehnder PCB-MIN-CAQ 0550294 Printed Circuit Board is an internal control circuit board used in Zehnder HVAC and air handling systems to manage system control, signal processing, and component communication, designed to sit as an internal PCB module within the unit. It handles sensor inputs and inter-component communication, serving as the control logic backbone that orchestrates the unit’s operation. Key details include MPN PCB-MIN-CAQ / 0550294 and Alternate Number 021.018.134; Product Type: Control Circuit Board, Brand: Zehnder (SIT Group manufactured); Function: system control, signal processing, and component communication; Applications: HVAC/ventilation control systems in residential and commercial settings, including heat recovery units and air quality management systems; Installation: internal PCB module within unit; Condition: typically available as new surplus or used; Packaging: often distributed in bulk packaging units. Common replacements include Zehnder 400502001 PCB (ComfoAir Q series control board), SIT Group control PCBs (model-specific equivalents), and OEM Zehnder ventilation control boards (unit-specific replacements).