{"product_id":"carrier-control-board-fb4bnl024l00aaaa","title":"OEM Carrier Control Board HK42FZ Series for Model FB4BNL024L00AAAA","description":"\u003cdiv\u003e\n\u003ch1\u003eOEM Carrier Control Board HK42FZ Series for Model FB4BNL024L00AAAA\u003c\/h1\u003e\n\u003cp\u003eThis OEM Carrier control board is the integrated furnace control (IFC) for the FB4BNL024L00AAAA fan coil unit, managing blower operation, relay sequencing, and safety interlocks. When your air handler fails to power on, the blower won't cycle, or you see erratic fan behavior, a faulty board is the most common cause. Engineered to exact Carrier specifications, this board restores reliable communication between your thermostat, blower motor, and heating elements on the FB4BNL024L00AAAA. Installation is moderate difficulty: a competent DIYer with basic electrical knowledge can swap it in about 30-45 minutes by photographing wire positions, transferring connectors one at a time, and confirming the board model match. We strongly recommend cutting power at the breaker first. Using a genuine OEM board protects your warranty and ensures proper fit, unlike generic substitutes. In stock and ships same-day when you order before 3PM CST. Order with confidence from National HVAC Parts for guaranteed Carrier compatibility and fast, reliable delivery to your door.\u003c\/p\u003e\n\u003ch2\u003eCompatibility\u003c\/h2\u003e\n\u003cp\u003eThis part is compatible with Carrier model FB4BNL024L00AAAA.\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":62951196361075,"sku":"carrier-control-board-fb4bnl024l00aaaa","price":189.95,"currency_code":"USD","in_stock":true}],"url":"https:\/\/nationalhvacparts.com\/products\/carrier-control-board-fb4bnl024l00aaaa","provider":"National HVAC Parts","version":"1.0","type":"link"}