{"product_id":"carrier-gb3aav024070adja-control-board-4zd3t7","title":"OEM Carrier Integrated Furnace Control Board HK42FZ016 — GB3AAV024070A","description":"\u003ch1\u003eOEM Carrier Integrated Furnace Control Board HK42FZ016 for Model GB3AAV024070ADJA\u003c\/h1\u003e\u003cp\u003eThis is the factory OEM integrated furnace control board (IFC) for the \u003cstrong\u003eCarrier GB3AAV024070ADJA\u003c\/strong\u003e gas furnace. The control board is the brain of your heating system — it sequences the inducer motor, hot surface igniter, gas valve, and blower fan through every heating cycle. When this board fails, you may experience symptoms including a hard lockout with a blinking fault code, no ignition attempts, random short-cycling, or a furnace that simply won't respond to a thermostat call for heat. Replacing with the correct OEM board ensures every timing sequence, safety interlock, and diagnostic LED function performs exactly as Carrier engineered.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecs:\u003c\/strong\u003e OEM Part Numbers: \u003cstrong\u003eHK42FZ016\u003c\/strong\u003e \/ \u003cstrong\u003e325878-751\u003c\/strong\u003e | Integrated Furnace Control (IFC) board | 24V control circuit | Compatible with single-stage gas valve and HSI ignition sequence | Onboard diagnostic fault-code LED\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM vs Generic:\u003c\/strong\u003e OEM control boards are programmed with Carrier's exact timing algorithms for inducer pre-purge, igniter warm-up, and flame-proving delay. Aftermarket boards frequently use approximated timing that can trigger nuisance lockouts, void equipment warranties, or — in worst cases — compromise safety shutoff sequences.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall Difficulty: 3\/5\u003c\/strong\u003e — Requires disconnecting 120V line voltage. Always shut off the furnace disconnect switch and confirm power is off with a multimeter before starting. Tools needed: Phillips and flat-head screwdrivers, needle-nose pliers, phone\/camera to photograph all wiring harness connections before removal. Transfer wiring harnesses one connector at a time to avoid miswiring.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWarranty:\u003c\/strong\u003e 1-year OEM factory warranty against defects. Orders placed before our daily cutoff ship same business day from our stocked warehouse.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eCompatibility:\u003c\/strong\u003e This board is the direct OEM replacement for the \u003cstrong\u003eCarrier GB3AAV024070ADJA\u003c\/strong\u003e gas furnace. Cross-references OEM part numbers HK42FZ016 and kit number 325878-751. Always verify your existing board's part number against the data label inside your furnace's control compartment before ordering. Our fitment team is available to confirm compatibility — reach out before you buy if you have any questions. \u003cstrong\u003eIn stock and ready to ship today.\u003c\/strong\u003e\u003c\/p\u003e","brand":"Carrier","offers":[{"title":"OEM","offer_id":62909403038067,"sku":"CARRIE-GB3AAV024070ADJA-CONTROL_BOARD-HK42FZ016","price":180.0,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62909403070835,"sku":"CARRIE-GB3AAV024070ADJA-CONTROL_BOARD-HK42FZ016-GEN","price":102.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0984\/1190\/5395\/files\/nhvac-control-board-furnace-HK42FZ016_f1994895-11e0-4dbe-aae5-ec5a20b52877.jpg?v=1782928333","url":"https:\/\/nationalhvacparts.com\/products\/carrier-gb3aav024070adja-control-board-4zd3t7","provider":"National HVAC Parts","version":"1.0","type":"link"}