{"product_id":"carrier-tchc1850he403398-control-board-11kz9v","title":"OEM Carrier Economizer Control Board Kit HH63AW001 — TCHC1850HE403398","description":"\u003ch1\u003eOEM Carrier Economizer Control Board Kit HH63AW001 for Model TCHC1850HE403398\u003c\/h1\u003e\u003cp\u003eThis is the factory OEM \u003cstrong\u003eEconomizer Control Board Kit (HH63AW001)\u003c\/strong\u003e, the direct-replacement control board specified by Carrier for the \u003cstrong\u003eTCHC1850HE403398\u003c\/strong\u003e commercial HVAC unit. The economizer control board manages the automated outdoor air damper system — monitoring enthalpy or dry-bulb conditions to determine when free cooling from outside air is available. When this board fails, the unit may lose all economizer function, trigger diagnostic fault codes, default to a fixed damper position, or cause the entire system to lock out, resulting in poor indoor air quality and lost energy savings.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecs:\u003c\/strong\u003e OEM Part Number HH63AW001 | Economizer Control Board Kit (includes board and associated harness\/hardware) | Factory-matched input\/output logic for Carrier commercial systems | 24V control circuit compatible\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM vs Generic:\u003c\/strong\u003e This is a genuine Carrier OEM kit — firmware, relay ratings, and sensor input thresholds are factory-calibrated to exact specification. Aftermarket boards frequently lack enthalpy sensor compatibility or proper fault-code communication, leading to repeat failures and failed inspections.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall Difficulty: 3\/5\u003c\/strong\u003e — Disconnect all power (line voltage and control voltage) before beginning. Tools needed: flathead and Phillips screwdrivers, 1\/4\" nut driver, needle-nose pliers, multimeter. Photograph all wiring harness connections before removal. Refer to unit wiring diagram located inside the control access panel. A qualified HVAC technician is strongly recommended for commercial economizer board replacements.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWarranty:\u003c\/strong\u003e 1-year OEM factory warranty against defects in materials and workmanship. Orders ship same business day from our warehouse when placed before 3 PM local time.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eCompatibility:\u003c\/strong\u003e Engineered as the direct OEM replacement for Carrier model \u003cstrong\u003eTCHC1850HE403398\u003c\/strong\u003e. Verify your existing board's part number stamped on the board label before ordering to confirm fitment. For compatibility questions, our HVAC parts specialists verify fitment before you order — contact us before purchasing.\u003c\/p\u003e","brand":"Carrier","offers":[{"title":"OEM","offer_id":62640277586291,"sku":"CARRIE-TCHC1850HE403398-CONTROL_BOARD-HH63AW001","price":206.95,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62640277619059,"sku":"CARRIE-TCHC1850HE403398-CONTROL_BOARD-HH63AW001-GEN","price":181.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0984\/1190\/5395\/files\/nhvac-control-board-HH63AW001_939e39ca-482c-4334-9ee9-3ab17d72e1b5.jpg?v=1775029004","url":"https:\/\/nationalhvacparts.com\/products\/carrier-tchc1850he403398-control-board-11kz9v","provider":"National HVAC Parts","version":"1.0","type":"link"}