OEM Carrier DCV Economizer Control Board Kit HH63AW001 for Model TCHC1850HE403359

This is a genuine OEM Carrier Factory Authorized Part — the HH63AW001 DCV Economizer Control Board Kit — designed as the direct factory replacement for the Carrier TCHC1850HE403359 commercial rooftop unit. The economizer control board is the command center of your unit's free-cooling strategy: it continuously monitors outdoor air quality and enthalpy conditions, modulates the damper actuator, and manages the blend of outdoor and recirculated air to minimize mechanical cooling loads. When this board fails, you'll typically see symptoms such as the economizer damper stuck open or closed, loss of demand-controlled ventilation (DCV) response, fault codes on the unit controller, erratic damper hunting, or a complete loss of free-cooling — all of which drive up energy costs and compromise indoor air quality in commercial spaces.

• Specs: OEM Part# HH63AW001 | Cross-reference: W7212A1017 | Input voltage: 120V / 60Hz | Dimensions: approx. 4" × 4" × 2" | Weight: 1 lb | All inputs Class 2 | Factory Authorized Parts — Carrier Corporation
• OEM vs Generic: This is a genuine Carrier OEM board — not a third-party clone. OEM boards are pre-programmed with the correct control logic, damper calibration parameters, and safety thresholds for your unit. Aftermarket substitutes may lack DCV firmware compatibility, leading to improper damper modulation and potential building code non-compliance.
• Install difficulty: 3/5 — Shut off all power and lockout/tagout before servicing. Tools needed: flathead and Phillips screwdrivers, needle-nose pliers, multimeter, phone/camera for wiring documentation. Label and photograph all harness connectors before removal. Recalibrate the damper actuator after board replacement per the unit service manual. Recommended for qualified HVAC technicians.
• Warranty: 1-year OEM factory warranty against defects. Ships same business day from our warehouse. Note: Electrical control boards are non-returnable once installed — verify part number against your unit's data plate before ordering.

Compatibility: Designed for the Carrier TCHC1850HE403359 commercial rooftop unit economizer assembly. Cross-references OEM part W7212A1017. Verify your existing board's part number on the component label before ordering. Our team is available to confirm fitment — contact us before you buy if you have any questions.