{"product_id":"carrier-control-board-gb3aav036035aaja","title":"OEM Carrier Control Board HK42FZ011 for Model GB3AAV036035AAJA","description":"\u003cdiv\u003e\n\u003ch1\u003eOEM Carrier Control Board HK42FZ011 for Model GB3AAV036035AAJA\u003c\/h1\u003e\n\u003cp\u003eThis OEM Carrier furnace control board (HK42FZ011) is the central controller for the GB3AAV036035AAJA gas furnace, sequencing ignition, blower on\/off delays, safety lockouts, and diagnostic fault codes. It ties together the igniter, gas valve, pressure switch, flame sensor, and blower so every heating cycle runs in the correct, safe order. A failed board shows up as no ignition, repeated short-cycling, a blower stuck on or off, or blinking error codes at the sight glass. This genuine Carrier board is factory-programmed to your furnace's exact specification and uses the original connector layout, so it installs into the existing harness without jumpers or rewiring. Installation is moderate: cut power, photograph and label every plug, remove the mounting screws, move connectors one at a time to the new board, and remount—roughly 30–45 minutes. This part is compatible with Carrier model GB3AAV036035AAJA. In stock and ships same-day when ordered before 3PM CST. Swap a bad board and bring the furnace back to full reliable operation.\u003c\/p\u003e\n\u003ch2\u003eCompatibility\u003c\/h2\u003e\n\u003cp\u003eThis part is compatible with Carrier model GB3AAV036035AAJA.\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":62942737531251,"sku":"carrier-control-board-gb3aav036035aaja","price":189.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0984\/1190\/5395\/files\/nhvac-control-board-gb3aav036035aaja.jpg?v=1781467623","url":"https:\/\/nationalhvacparts.com\/products\/carrier-control-board-gb3aav036035aaja","provider":"National HVAC Parts","version":"1.0","type":"link"}