{"product_id":"carrier-control-board-gb3aav036070adja","title":"OEM Carrier Control Board HK42FZ034 for Model GB3AAV036070ADJA","description":"\u003cdiv\u003e\n\u003ch1\u003eOEM Carrier Control Board HK42FZ034 for Model GB3AAV036070ADJA\u003c\/h1\u003e\n\u003cp\u003eThis genuine OEM Carrier furnace control board (HK42FZ034) governs every step of your heating cycle — ignition sequencing, inducer and blower timing, safety lockouts, and onboard diagnostic codes. When the board fails you may see no response to a heat call, a blower that runs continuously or not at all, repeated short-cycling, or blinking fault lights. This board is pin-matched and programmed for the Carrier GB3AAV036070ADJA gas furnace, restoring proper relay logic and safety operation without guesswork. Difficulty is moderate, around 30-45 minutes: take a clear photo of the wiring, kill power at the disconnect, move each connector one at a time to the new board, and confirm the part number and any jumper settings match the original. The numerous low-voltage connections make careful labeling the difference between a smooth swap and a headache. A new board brings the furnace fully back to life and clears nuisance faults. In stock and ships same-day when ordered before 3PM CST, cutting your no-heat downtime.\u003c\/p\u003e\n\u003ch2\u003eCompatibility\u003c\/h2\u003e\n\u003cp\u003eThis part is compatible with Carrier model GB3AAV036070ADJA.\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":62942730649971,"sku":"carrier-control-board-gb3aav036070adja","price":189.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0984\/1190\/5395\/files\/nhvac-control-board-gb3aav036070adja.jpg?v=1781467736","url":"https:\/\/nationalhvacparts.com\/products\/carrier-control-board-gb3aav036070adja","provider":"National HVAC Parts","version":"1.0","type":"link"}