OEM Carrier Economizer Control Board Kit HH63AW001 for Model TCHC1850HE403401

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 TCHC1850HE403401 commercial rooftop unit. The economizer control board is the dedicated intelligence module that governs the unit's economizer damper operation, continuously monitoring outdoor air conditions (temperature and/or CO₂/DCV sensors) and orchestrating the blend of outdoor and return air to maximize free-cooling potential and optimize indoor air quality. When this board fails, you'll typically see economizer fault codes, a damper stuck open or closed, erratic mixed-air temperatures, or a complete loss of free-cooling mode — all of which drive up energy costs and can trigger building automation system alarms.

• 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 — Carrier Corporation
• OEM vs Generic: This is a genuine Carrier Factory Authorized Part, manufactured to exact firmware and hardware specifications. Third-party boards often lack proper DCV (Demand Controlled Ventilation) calibration tables, leading to compliance failures with ASHRAE 62.1 ventilation requirements in commercial applications. Always insist on OEM for economizer controls.
• Install Difficulty: 3/5 — Commercial rooftop application. Power down and lock out the unit at the disconnect before accessing the control compartment. Tools needed: insulated screwdrivers, needle-nose pliers, multimeter, and a smartphone to photograph all wiring and connector positions before removal. DCV sensor re-pairing or damper actuator re-calibration may be required after board swap — consult the unit's service manual.
• Warranty: 1-year OEM manufacturer warranty. Ships same business day from our warehouse. Secure packaging to protect board traces and connectors in transit.

Compatibility: Designed for the Carrier TCHC1850HE403401 commercial packaged rooftop unit. Cross-references OEM part numbers HH63AW001 and W7212A1017. Verify your existing board's part number on the board label or unit data plate before ordering. Need fitment confirmation? Our HVAC parts specialists verify compatibility before every order — contact us and we'll confirm in minutes.