{"product_id":"carrier-ph3gnaa30000aa-control-board-15t5bk","title":"OEM Carrier Defrost Control Board HK32EA003 for PH3GNAA30000AA","description":"\u003ch1\u003eOEM Carrier Defrost Control Board HK32EA003 for Heat Pump Model PH3GNAA30000AA\u003c\/h1\u003e\u003cp\u003eThis is the factory OEM defrost control board for the \u003cstrong\u003eCarrier PH3GNAA30000AA\u003c\/strong\u003e heat pump. The defrost control board manages the automatic defrost cycle that prevents the outdoor coil from becoming encased in ice during heating operation. It monitors run time and outdoor coil temperature, then initiates and terminates defrost mode as needed. When this board fails, common symptoms include a heavily iced outdoor coil, a heat pump that never enters defrost mode, a unit stuck in continuous defrost, loss of heating capacity, or fault codes on the thermostat or air handler display.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecs:\u003c\/strong\u003e OEM Part Number HK32EA003 | Factory defrost control board | Direct drop-in replacement | Matched to Carrier PH3GNAA30000AA factory wiring harness and control logic\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM vs Generic:\u003c\/strong\u003e This is the genuine OEM Carrier board — not an aftermarket substitute. OEM boards use factory-programmed defrost timing and temperature thresholds. Aftermarket boards may have mismatched logic that causes short-cycling, improper defrost termination, or voided equipment warranties.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall Difficulty: 3\/5\u003c\/strong\u003e — Requires disconnecting and restoring multiple low-voltage control wiring connections. Tools needed: 1\/4\" and 5\/16\" nut drivers, needle-nose pliers, phone\/camera for photographing wiring layout before removal. Always disconnect power at the disconnect box and confirm voltage is absent before handling the board.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWarranty:\u003c\/strong\u003e 1-year OEM factory warranty against defects. Orders placed before cutoff ship same business day from our warehouse.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eCompatibility:\u003c\/strong\u003e Engineered as a direct OEM replacement for \u003cstrong\u003eCarrier model PH3GNAA30000AA\u003c\/strong\u003e heat pumps. Confirm your existing board's part number matches HK32EA003 before ordering. Not sure? Our fitment team is standing by to verify compatibility before you buy — same-day shipping available on in-stock orders.\u003c\/p\u003e","brand":"Carrier","offers":[{"title":"OEM","offer_id":62641363583347,"sku":"CARRIE-PH3GNAA30000AA-CONTROL_BOARD-HK32EA003","price":193.95,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62641363616115,"sku":"CARRIE-PH3GNAA30000AA-CONTROL_BOARD-HK32EA003-GEN","price":170.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0984\/1190\/5395\/files\/nhvac-control-board-HK32EA003_30a11d04-cd59-4b6b-940b-255fea17f5f2.jpg?v=1775026815","url":"https:\/\/nationalhvacparts.com\/products\/carrier-ph3gnaa30000aa-control-board-15t5bk","provider":"National HVAC Parts","version":"1.0","type":"link"}