{"product_id":"carrier-tchc1850he403352-control-board-11kz9v","title":"OEM Carrier Economizer Control Board Kit HH63AW001 — TCHC1850HE403352","description":"\u003ch1\u003eOEM Carrier DCV Economizer Control Board Kit HH63AW001 for Model TCHC1850HE403352\u003c\/h1\u003e\u003cp\u003eThis is a genuine OEM Carrier Factory Authorized Part — the \u003cstrong\u003eHH63AW001 DCV Economizer Control Board Kit\u003c\/strong\u003e — factory-specified for the \u003cstrong\u003eCarrier TCHC1850HE403352\u003c\/strong\u003e commercial rooftop unit. The economizer control board is the intelligence center of your unit's free-cooling and demand-controlled ventilation (DCV) system. It continuously monitors outdoor air conditions, CO₂ levels (when DCV-enabled), and damper position feedback to optimize the blend of outside and recirculated air — reducing mechanical cooling load and improving indoor air quality. When this board fails, common symptoms include a stuck-open or stuck-closed economizer damper, loss of DCV functionality, erratic or hunting damper behavior, fault codes on the unit controller, or a complete inability to bring in outside air. Left unresolved, a failed board can drive up energy costs significantly or cause indoor air quality compliance failures in commercial applications.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecs:\u003c\/strong\u003e OEM Part # HH63AW001 | Cross-ref: W7212A1017 | Input Voltage: 120V \/ 60Hz | Board Dimensions: approx. 4\" × 4\" × 2\" | Weight: 1 lb | All inputs Class 2 | Factory Authorized Parts — Carrier Corporation\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM vs Generic:\u003c\/strong\u003e This is a genuine Carrier Factory Authorized replacement. Third-party economizer boards frequently lack the precise firmware calibration required for DCV sensor integration and damper actuator feedback loops, risking non-compliance with ASHRAE 62.1 ventilation standards and building energy codes.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall Difficulty: 3\/5\u003c\/strong\u003e — Requires disconnecting 24V and 120V wiring harnesses and documenting all sensor leads before removal. Tools needed: flathead and Phillips screwdrivers, needle-nose pliers, multimeter, wiring labels. Always de-energize the unit at the disconnect before servicing. Recommend verifying damper actuator and CO₂ sensor integrity before condemning the board.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWarranty:\u003c\/strong\u003e 1-year OEM factory warranty on this genuine Carrier part. In stock and ships same business day from our warehouse.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eCompatibility:\u003c\/strong\u003e Direct OEM replacement for Carrier model \u003cstrong\u003eTCHC1850HE403352\u003c\/strong\u003e commercial packaged rooftop units equipped with the DCV economizer option. Cross-references Honeywell W7212A1017. Verify your existing board's part number on the label before ordering. Our fitment team is available to confirm compatibility — contact us before you buy.\u003c\/p\u003e","brand":"Carrier","offers":[{"title":"OEM","offer_id":62640278110579,"sku":"CARRIE-TCHC1850HE403352-CONTROL_BOARD-HH63AW001","price":350.95,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62640278143347,"sku":"CARRIE-TCHC1850HE403352-CONTROL_BOARD-HH63AW001-GEN","price":308.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0984\/1190\/5395\/files\/nhvac-control-board-HH63AW001_cc6449a7-cc0d-4b72-99ee-e3691d234f0a.jpg?v=1775028993","url":"https:\/\/nationalhvacparts.com\/products\/carrier-tchc1850he403352-control-board-11kz9v","provider":"National HVAC Parts","version":"1.0","type":"link"}