OEM Carrier DCV Economizer Control Board Kit HH63AW001 for Model TCHC1850HE401027

This is a genuine OEM Carrier Factory Authorized Part — the DCV Economizer Control Board Kit (part number HH63AW001) — engineered as the factory-specified replacement for the Carrier TCHC1850HE401027 commercial rooftop unit. The economizer control board serves as the intelligent hub of your unit's economizer system, continuously monitoring outdoor air conditions and modulating the economizer damper to blend return and outdoor air optimally. When this board fails, symptoms include economizer dampers stuck open or closed, loss of demand-controlled ventilation (DCV), active fault codes on the unit controller, excessive energy consumption, and degraded indoor air quality (IAQ).

• Part Specs: OEM Part # HH63AW001 | Cross-reference: W7212A1017 | Input voltage: 120V / 60Hz | All inputs Class 2 | Dimensions approx. 4" × 4" × 2" | Weight: 1 lb | Factory Authorized Parts by Carrier Corporation
• OEM vs Generic: This is a genuine Carrier OEM board — not an aftermarket substitute. OEM boards are factory-programmed with the exact control logic for your unit's economizer sequence. Third-party boards frequently misinterpret sensor inputs, causing damper hunting, DCV failures, or voided equipment warranties.
• Install Difficulty: 3/5 — Disconnect power at the disconnect and verify zero voltage with a multimeter before opening the control panel. Tools needed: flathead and Phillips screwdrivers, needle-nose pliers, multimeter, phone or camera to photograph all wiring harness connections before removal. Label all connectors. Commercial RTU work — qualified HVAC technician strongly recommended.
• Warranty: 1-year OEM factory warranty on parts. Orders ship same business day from our warehouse when placed before 3 PM local time.

Compatibility: Designed for the Carrier TCHC1850HE401027 commercial rooftop HVAC unit. Cross-references include Honeywell W7212A1017. Verify your existing board's part number against the unit data plate before ordering. Our HVAC parts specialists are available to confirm fitment — contact us before you order if you have any questions.