OEM Carrier DCV Economizer Control Board Kit HH63AW001 for Model TCHC1850HE401026

This is a genuine OEM Carrier Factory Authorized Part — the HH63AW001 DCV Economizer Control Board Kit — engineered as the factory-specified replacement for the Carrier TCHC1850HE401026 commercial rooftop unit. The economizer control board is the intelligence center of your unit's free-cooling system: it continuously monitors outdoor air enthalpy and CO₂ (DCV) sensor inputs, then modulates the economizer damper to maximize the use of outdoor air for cooling while minimizing compressor runtime. When this board fails, symptoms include erratic or stuck damper positioning, loss of demand-controlled ventilation response, fault codes related to the economizer circuit, or complete free-cooling lockout — all of which drive up energy costs and can trigger code-compliance failures in commercial applications.

• Part Specs: OEM Part # HH63AW001 | Cross-reference: W7212A1017 | Input Voltage: 120V / 60Hz | Dimensions: ~4" × 4" × 2" | Weight: 1 lb | Factory Authorized Parts (FAP) designation
• OEM vs Generic: The HH63AW001 is a genuine Carrier Factory Authorized Part with firmware and calibration matched to the TCHC series RTU. Third-party boards may lack DCV logic compatibility, risking damper over-travel, ventilation code violations, or premature board failure.
• Install Difficulty: 3/5 — Disconnect all power before servicing. Tools needed: ¼" and 5/16" nut drivers, needle-nose pliers, multimeter, and a laptop with Carrier service software if DCV re-commissioning is required. Document and photograph all low-voltage wiring terminations before removal. Re-commissioning the economizer sequence post-install is strongly recommended.
• Warranty: 1-year OEM manufacturer warranty. Ships same business day from our warehouse in original Carrier factory packaging.

Compatibility: Engineered for the Carrier TCHC1850HE401026 commercial rooftop unit. Cross-references OEM part W7212A1017. Verify your unit's data plate and existing board label match part number HH63AW001 before ordering. Have a question about fitment? Our HVAC parts team confirms compatibility before you buy — reach out today and we'll get you the right part, fast.