{"product_id":"carrier-tchc1850he400984-control-board-11kz9v","title":"OEM Carrier Economizer Control Board Kit HH63AW001 — TCHC1850HE400984","description":"\u003ch1\u003eOEM Carrier DCV Economizer Control Board Kit HH63AW001 for Model TCHC1850HE400984\u003c\/h1\u003e\u003cp\u003eThis is a genuine OEM Carrier Factory Authorized Part — the DCV Economizer Control Board Kit (part# \u003cstrong\u003eHH63AW001\u003c\/strong\u003e) — designed as a direct, factory-matched replacement for the \u003cstrong\u003eCarrier TCHC1850HE400984\u003c\/strong\u003e commercial rooftop unit. The economizer control board is the intelligence center of your unit's economizer system: it continuously monitors outdoor and return-air conditions, modulates the outdoor air damper to maximize free cooling, and enforces demand-controlled ventilation (DCV) to maintain indoor air quality while minimizing mechanical cooling loads. When this board fails, common symptoms include a stuck-open or stuck-closed damper, inability to enter economizer mode, erratic outdoor air percentages, fault codes on the unit controller, or a complete economizer lockout that forces full mechanical cooling — driving up energy costs and reducing occupant comfort.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM Part Number:\u003c\/strong\u003e HH63AW001 | Cross-reference: W7212A1017 | Factory Authorized Parts — Carrier Corporation\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecs:\u003c\/strong\u003e Input voltage 120V | 60 Hz | All inputs Class 2 | Dimensions approx. 4.7\" L × 3.2\" W | Weight: 1 lb | Compatible with DCV (CO₂-based demand-controlled ventilation) economizer assemblies\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM vs Generic:\u003c\/strong\u003e This is a genuine Carrier OEM board — not an aftermarket clone. OEM boards carry factory firmware, correct I\/O logic for your specific RTU platform, and validated sensor thresholds. Aftermarket boards may use incompatible firmware or miscalibrated analog inputs that cause phantom fault codes or damper over-travel.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall Difficulty: 3\/5\u003c\/strong\u003e — Requires disconnection of 24V and Class 2 low-voltage wiring harnesses plus the damper actuator link. Always de-energize the unit at the disconnect before servicing. Recommended tools: #2 Phillips and flathead screwdrivers, needle-nose pliers, multimeter, wiring camera\/phone for photo documentation. A qualified HVAC technician is strongly recommended for this repair.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWarranty:\u003c\/strong\u003e 1-year OEM factory warranty. Ships same business day from our warehouse when ordered before 3 PM local time.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eCompatibility:\u003c\/strong\u003e Engineered for the Carrier \u003cstrong\u003eTCHC1850HE400984\u003c\/strong\u003e commercial rooftop unit economizer assembly. Also cross-references to Bryant and Payne commercial RTU platforms using the W7212A1017 control. Verify your existing board's part number label before ordering — our parts specialists are available to confirm fitment at no charge. \u003cstrong\u003eOrder today and ship today — in stock and ready to go.\u003c\/strong\u003e\u003c\/p\u003e","brand":"Carrier","offers":[{"title":"OEM","offer_id":62640280207731,"sku":"CARRIE-TCHC1850HE400984-CONTROL_BOARD-HH63AW001","price":366.95,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62640280240499,"sku":"CARRIE-TCHC1850HE400984-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_c4eb49a1-3452-4946-ad18-5dc0ed5d99df.jpg?v=1775028951","url":"https:\/\/nationalhvacparts.com\/products\/carrier-tchc1850he400984-control-board-11kz9v","provider":"National HVAC Parts","version":"1.0","type":"link"}