{"product_id":"carrier-control-board-gb1aav036055aaja","title":"OEM Carrier Control Board HK42FZ009 for Model GB1AAV036055AAJA","description":"\u003cdiv\u003e\n\u003ch1\u003eOEM Carrier Control Board HK42FZ009 for Model GB1AAV036055AAJA\u003c\/h1\u003e\n\u003cp\u003eThis OEM Carrier furnace control board (HK42FZ009) governs your entire heating sequence — ignition timing, blower and inducer control, safety interlocks, and diagnostic fault codes. Built for the GB1AAV036055AAJA gas furnace, it orchestrates the igniter, gas valve, flame sensor, and pressure switch to produce safe, efficient heat each cycle. A failed board can leave the furnace completely dead, stuck short-cycling, or running the blower nonstop. Its onboard diagnostic LED makes pinpointing faults easier both before and after the swap. This genuine factory part guarantees the correct firmware, relay configuration, and connector layout your model requires — essential for the system's central controller. Installation is moderate: photograph all wiring first, cut power, move connectors one at a time to the new board, and remount it. Most technicians finish in 30-45 minutes. Choosing OEM ensures full timing and feature compatibility that aftermarket boards can't reliably match. In stock and ships same-day on orders before 3PM CST. Compatibility guaranteed for your GB1AAV036055AAJA furnace.\u003c\/p\u003e\n\u003ch2\u003eCompatibility\u003c\/h2\u003e\n\u003cp\u003eThis part is compatible with Carrier model GB1AAV036055AAJA.\u003c\/p\u003e\n\u003ch2\u003eShipping\u003c\/h2\u003e\n\u003cp\u003eSame-day shipping before 3 PM CST. 30-day returns on uninstalled parts.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Carrier","offers":[{"title":"Default Title","offer_id":62942819418483,"sku":"carrier-control-board-gb1aav036055aaja","price":149.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0984\/1190\/5395\/files\/nhvac-control-board-gb1aav036055aaja.jpg?v=1781467515","url":"https:\/\/nationalhvacparts.com\/products\/carrier-control-board-gb1aav036055aaja","provider":"National HVAC Parts","version":"1.0","type":"link"}