OEM Carrier DCV Economizer Control Board Kit HH63AW001 for Model TCHC1850HE403350

This is a genuine OEM Carrier Economizer Control Board Kit (part #HH63AW001), the factory-authorized replacement for the Carrier TCHC1850HE403350 commercial rooftop unit. The economizer control board is the intelligent hub of your unit's demand-controlled ventilation (DCV) system — it continuously monitors outdoor air conditions and modulates the economizer damper to blend fresh outside air with return air, maximizing energy efficiency and maintaining indoor air quality. When this board fails, you may experience loss of economizer function, an economizer damper stuck open or closed, DCV sensor faults, or erratic outside air percentages that drive up energy costs and trigger code violations.

• Specs: OEM Part # HH63AW001 | Cross-Reference: W7212A1017 | Input Voltage: 120V / 60Hz | Dimensions: approx. 4" × 4" × 2" | Weight: 1 lb | All inputs Class 2 rated | Factory Authorized Parts, Carrier Corporation
• OEM vs Generic: This factory-original board is pre-configured to Carrier's exact DCV algorithm and sensor thresholds. Third-party alternatives may require manual calibration, lack firmware compatibility, or fail to communicate properly with the RTU's main control board — risking refrigerant waste and building code non-compliance.
• Install Difficulty: 3/5 — Commercial rooftop work; requires disconnect of 120V power at the unit disconnect before servicing. Tools needed: #2 Phillips and flat-blade screwdrivers, needle-nose pliers, multimeter, and wiring diagram (available on unit access panel). Photograph all wiring harness connections before removal. Recommend licensed commercial HVAC technician for installation.
• Warranty: 1-year OEM manufacturer warranty. In-stock and ships same business day from our warehouse.

Compatibility: Engineered as a direct OEM replacement for Carrier model TCHC1850HE403350 commercial packaged rooftop units equipped with a DCV economizer. Cross-references OEM part numbers HH63AW001 and W7212A1017. Verify your unit's existing part number on the economizer board or unit data plate before ordering. Our HVAC parts specialists are available to confirm fitment — contact us before you order.