OEM Carrier DCV Economizer Control Board Kit HH63AW001 for Model TCHC1850HE401022

This is a genuine OEM Carrier Factory Authorized Part (HH63AW001), the direct factory-specified replacement economizer control board kit for the Carrier TCHC1850HE401022 commercial rooftop unit. The economizer control board serves as the intelligence center of your unit's economizer system — continuously monitoring outdoor air conditions via CO₂ and enthalpy sensors, modulating the outdoor air damper, and managing demand-controlled ventilation (DCV) to maximize energy efficiency and indoor air quality. When this board fails, the economizer may lock in a fixed damper position, trigger ventilation fault codes, fail to respond to CO₂ demand signals, or cause the unit to run inefficiently by conditioning unnecessary outdoor air.

• Specs: OEM Part# HH63AW001 | Cross-reference: W7212A1017 | Input Voltage: 120V / 60Hz | All inputs Class 2 rated | Dimensions: approx. 4" × 4" × 2" | Weight: 1 lb | Factory Authorized Parts — Carrier Corporation
• OEM vs Generic: This OEM board is pre-configured and firmware-matched to Carrier's DCV economizer logic. Aftermarket substitutes may lack proprietary sensor calibration routines, leading to persistent fault codes or inaccurate damper modulation that defeats energy savings.
• Install difficulty: 3/5 — Commercial RTU board swap. Requires disconnecting 24V and 120V control wiring — label or photograph all terminals before removal. Tools needed: ¼" and 5/16" nut drivers, needle-nose pliers, multimeter. De-energize unit and verify zero voltage before handling. CO₂ sensor recalibration may be required post-installation per unit service manual.
• Warranty: 1-year OEM manufacturer warranty on parts. Ships same business day from our stocked warehouse — no waiting on special orders.

Compatibility: Directly fits Carrier model TCHC1850HE401022 commercial packaged rooftop unit with DCV economizer configuration. Also cross-references Honeywell W7212A1017. Always verify your existing board's part number label before ordering. Our HVAC parts specialists are available to confirm fitment — reach out before you order if you have any questions.