ZEHNDER PCB-MIN-CAQ 0550294 CONTROL SIT GROUP PCB 021.018.134

Description:

The Zehnder PCB-MIN-CAQ 0550294 control board (also referenced as SIT Group PCB 021.018.134) is used in HVAC and air handling systems as a control circuit board responsible for system operation and regulation. Commonly installed in Zehnder ventilation and air management units, this PCB manages control logic, sensor inputs, and communication between system components. Maintenance teams and HVAC technicians use this board for system repair, troubleshooting, and replacement of failed control electronics.

Applications:

The Zehnder PCB-MIN-CAQ 0550294 control PCB is typically used in ventilation systems, air handling units, and HVAC equipment where automated control of airflow, temperature, and system performance is required. It is commonly found in residential and commercial ventilation systems, including heat recovery units and air quality management systems.

Technical Specifications:

• Manufacturer Part Number (MPN): PCB-MIN-CAQ / 0550294
• Alternate Number: 021.018.134
• Product Type: Control Circuit Board (PCB)
• Brand: Zehnder (SIT Group manufactured)
• Function: System control, signal processing, and component communication
• Application: HVAC / ventilation control systems
• Installation: Internal PCB module within unit
• Operation: Controls sensors, fans, and system logic
• Condition Availability: Typically new surplus or used market
• Packaging: Often distributed in bulk packaging units 

Common Replacements:

• Zehnder 400502001 PCB (ComfoAir Q series control board)
• SIT Group control PCBs (model-specific equivalents)
• OEM Zehnder ventilation control boards (unit-specific replacements)