{"product_id":"carrier-tchc1850he403397-control-board-11kz9v","title":"OEM Carrier DCV Economizer Control Board Kit HH63AW001 — TCHC1850HE403","description":"\u003ch1\u003eOEM Carrier DCV Economizer Control Board Kit HH63AW001 for Model TCHC1850HE403397\u003c\/h1\u003e\u003cp\u003eThis is a \u003cstrong\u003egenuine OEM Carrier Economizer Control Board Kit (part #HH63AW001)\u003c\/strong\u003e, the factory-specified replacement for the \u003cstrong\u003eCarrier TCHC1850HE403397\u003c\/strong\u003e commercial rooftop unit. The DCV (Demand Control Ventilation) economizer control board is the intelligent hub of your unit's free-cooling and ventilation strategy — it continuously monitors outdoor air conditions, CO₂ levels (when a DCV sensor is present), and damper position to maximize energy savings while maintaining code-compliant indoor air quality. When this board fails, you may see symptoms including: economizer damper stuck open or closed, free-cooling lockout faults, loss of DCV response, or the unit defaulting to minimum ventilation with no outdoor-air modulation.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePart Number \u0026amp; Cross-Reference:\u003c\/strong\u003e OEM Carrier HH63AW001 | Cross-references W7212A1017 | Factory Authorized Part — exact drop-in replacement with no modifications required.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecs:\u003c\/strong\u003e Voltage: 120V | Frequency: 60Hz | Board Dimensions: ~4\" × 4\" × 2\" | Weight: 1 lb | All inputs Class 2 | Compatible with DCV CO₂ sensor inputs for demand-controlled ventilation applications.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM vs Generic:\u003c\/strong\u003e OEM boards ship pre-configured to Carrier factory specifications, ensuring accurate sensor calibration, damper stroke timing, and fault-code communication with the main control board. Third-party substitutes often lack DCV logic firmware and may void unit warranty.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall Difficulty: 4\/5\u003c\/strong\u003e — Commercial rooftop board replacement. Requires lockout\/tagout procedure, disconnecting 24V and 120V control wiring harnesses, and verifying DCV sensor wiring post-install. Tools needed: insulated screwdrivers, nut driver set, multimeter, wiring diagram from unit service label. Recommended for qualified commercial HVAC technicians only.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWarranty:\u003c\/strong\u003e 1-year OEM factory warranty against defects. Ships same business day from our stocked warehouse.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eCompatibility:\u003c\/strong\u003e Engineered as a direct OEM replacement for the \u003cstrong\u003eCarrier TCHC1850HE403397\u003c\/strong\u003e commercial rooftop unit. Always verify your existing board's part number on the component label before ordering. Cross-reference W7212A1017 is also superseded by HH63AW001. In stock and ready to ship — order before 3 PM for same-day dispatch. Questions about fitment? Our HVAC parts specialists verify compatibility before you buy.\u003c\/p\u003e","brand":"Carrier","offers":[{"title":"OEM","offer_id":62640277651827,"sku":"CARRIE-TCHC1850HE403397-CONTROL_BOARD-HH63AW001","price":366.95,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62640277684595,"sku":"CARRIE-TCHC1850HE403397-CONTROL_BOARD-HH63AW001-GEN","price":322.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0984\/1190\/5395\/files\/nhvac-control-board-HH63AW001_92901dce-1036-4504-a17c-60699fdde7d9.jpg?v=1775026255","url":"https:\/\/nationalhvacparts.com\/products\/carrier-tchc1850he403397-control-board-11kz9v","provider":"National HVAC Parts","version":"1.0","type":"link"}