UNITED TECHNOLOGIES CARRIER HK-35AA-003 CIRCUIT BOARD

Description:

The United Technologies Carrier HK-35AA-003 Circuit Board is a control relay board used in HVAC equipment to manage relay switching, control logic, and system operation functions within commercial and industrial climate control systems. Commonly installed in Carrier HVAC units, air handling equipment, and model SDA-2082-2 control systems requiring reliable relay-based control and monitoring. Maintenance technicians, HVAC service providers, and OEM integrators use this circuit board for replacement, retrofit, repair, and refurbishment of existing control assemblies.

Applications:

The United Technologies Carrier HK-35AA-003 is designed for commercial HVAC equipment, air conditioning systems, air handling units, and building automation applications where relay control and equipment management functions are required. The board serves as an interface between system controls and field devices, supporting reliable operation of heating, cooling, ventilation, and equipment protection functions within Carrier control platforms. 

Technical Specifications:

• Brand: United Technologies Carrier
• Part Number: HK-35AA-003
• Alternate Part Number: HK35AA003
• Product Type: Circuit Board
• Board Type: Control Relay Board
• Application: HVAC Control Systems
• Compatible Equipment: Carrier HVAC Systems
• Associated Model: SDA-2082-2
• Function: Relay Switching and Control Logic Processing
• Category: Controls and Indicators
• Assembly Type: Printed Circuit Board (PCB)
• Supports HVAC Equipment Monitoring and Control
• Designed for OEM Equipment Integration
• Suitable for Replacement and Maintenance Applications
• Engineered for Commercial and Industrial HVAC Operation
• Used in Repair, Retrofit, and Refurbishment Projects

Common Replacements:

• Carrier HK-35AA-005 Control Relay Board
• Carrier HK35EZ002 Input/Output Control Board
• Carrier HK50AA004 Controller Module