{"product_id":"carrier-control-board-gb3aav036050abja","title":"OEM Carrier Control Board HK42FZ011 for Model GB3AAV036050ABJA","description":"\u003cdiv\u003e\n\u003ch1\u003eOEM Carrier Control Board HK42FZ011 for Model GB3AAV036050ABJA\u003c\/h1\u003e\n\u003cp\u003eThis OEM Carrier furnace control board (HK42FZ011) is the brain of the GB3AAV036050ABJA gas furnace. It manages the ignition sequence, blower timing, safety interlocks, and diagnostic LED fault codes, coordinating the igniter, gas valve, pressure switch, and blower for safe, efficient heating. Symptoms of a failing board include no ignition, a furnace that short-cycles, a blower that won't start or won't shut off, or flashing error codes at the inspection window. This genuine Carrier board is factory-programmed to match your furnace's exact firmware and relay layout, so it plugs into the existing harness connectors without jumpers or rewiring. Installation is moderate: cut power, photograph and label the wiring, remove the mounting screws, transfer connectors one at a time to the new board, and remount. Plan on 30–45 minutes. This part is compatible with Carrier model GB3AAV036050ABJA. In stock and ships same-day when ordered before 3PM CST. Replace a faulty board and restore full, reliable furnace operation.\u003c\/p\u003e\n\u003ch2\u003eCompatibility\u003c\/h2\u003e\n\u003cp\u003eThis part is compatible with Carrier model GB3AAV036050ABJA.\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":62942737367411,"sku":"carrier-control-board-gb3aav036050abja","price":189.95,"currency_code":"USD","in_stock":true}],"url":"https:\/\/nationalhvacparts.com\/products\/carrier-control-board-gb3aav036050abja","provider":"National HVAC Parts","version":"1.0","type":"link"}