OEM Carrier DCV Economizer Control Board Kit HH63AW001 for Model TCHC1850HE403395

This is a genuine OEM Carrier Economizer Control Board Kit (part# HH63AW001), the factory-authorized replacement for the Carrier TCHC1850HE403395 commercial rooftop unit. The DCV (Demand-Controlled Ventilation) economizer control board serves as the intelligence center of your unit's economizer system — it continuously monitors outdoor air conditions, CO₂ levels (when a DCV sensor is present), and enthalpy to determine when free-cooling with outside air is both possible and energy-efficient. When this board fails, symptoms include the economizer damper becoming stuck open or closed, fault codes related to the economizer circuit, loss of free-cooling operation, or the unit failing to meet ventilation code requirements entirely.

• Part Number & Specs: OEM Carrier HH63AW001 | DCV Economizer Control Board Kit | Input Voltage: 120V / 60Hz | Cross-reference: W7212A1017 | Dimensions: approx. 4" × 4" × 2" | Weight: ~1 lb | All inputs Class 2
• OEM vs Generic: This factory-authorized OEM board is pre-programmed to Carrier's exact DCV logic and enthalpy algorithms. Aftermarket substitutes may lack proper DCV calibration, leading to ventilation code violations and increased energy consumption — particularly critical in commercial applications subject to ASHRAE 62.1 compliance.
• Install Difficulty: 3/5 — Commercial rooftop economizer board replacement requires safe rooftop access and lockout/tagout procedures. Tools needed: flathead and Phillips screwdrivers, needle-nose pliers, multimeter, and a laptop with Carrier service software if DCV sensor recalibration is required. Always photograph all wiring harness connections before removal. Recommended for qualified HVAC technicians.
• Warranty & Shipping: Backed by a 1-year OEM factory warranty. Ships same business day from our warehouse — get your commercial system back online fast.

Compatibility: Designed as a direct OEM replacement for the Carrier TCHC1850HE403395 commercial rooftop unit. Also cross-references Honeywell W7212A1017. Verify your existing board's part number against HH63AW001 before ordering. Have a question about fitment? Our HVAC parts specialists verify compatibility before every order — contact us today and we'll ship today.