OEM Carrier DCV Economizer Control Board Kit HH63AW001 for Model TCHC1850HE401020

This is a genuine OEM Carrier DCV (Demand-Controlled Ventilation) Economizer Control Board Kit, part number HH63AW001, factory-specified for the Carrier TCHC1850HE401020 commercial rooftop unit. The economizer control board is the command center for your unit's free-cooling and ventilation strategy — it continuously monitors outdoor air conditions, interprets CO₂ or dry-bulb sensor signals, and modulates the economizer damper to maximize energy savings while maintaining indoor air quality. When this board fails, you may experience symptoms such as the economizer damper stuck open or closed, loss of free-cooling mode, HVAC system lockout faults, erratic damper hunting, or complete loss of DCV functionality in occupied spaces.

• OEM Part Number: HH63AW001 | Cross-reference: W7212A1017 | Factory Authorized Carrier Replacement Components Division
• OEM vs Generic: This genuine Carrier OEM board is pre-configured to factory control logic and communication protocols. Third-party boards often require manual parameter setup and may lack compatibility with your RTU's BACnet or proprietary sensor inputs, risking repeat failures or warranty voidance.
• Install Difficulty: 3/5 — Requires de-energizing the rooftop unit at the disconnect and safely labeling all low-voltage wiring harnesses before removal. Tools needed: flathead and Phillips screwdrivers, needle-nose pliers, multimeter, and laptop or controller if sensor re-commissioning is required post-install. Recommend verifying CO₂ sensor and actuator operation after board replacement.
• Warranty: 1-year OEM factory warranty through Carrier. Ships same business day from our warehouse in original factory packaging.

Compatibility: Engineered as the direct factory replacement for Carrier model TCHC1850HE401020 commercial rooftop units equipped with the DCV economizer option. Also cross-references Honeywell/Resideo W7212A1017. Verify your existing board's part number label before ordering — if you have questions, our HVAC parts specialists confirm fitment before you buy. Order now and ship today.