{"product_id":"carrier-ph13nb01900gaaaa-control-board-15t5bk","title":"OEM Carrier Defrost Control Board HK32EA007 for PH13NB01900GAAAA","description":"\u003ch1\u003eOEM Carrier Defrost Control Board HK32EA007 for Model PH13NB01900GAAAA\u003c\/h1\u003e\u003cp\u003eThis is the genuine OEM defrost control board (part number \u003cstrong\u003eHK32EA007\u003c\/strong\u003e), the factory-specified replacement for the \u003cstrong\u003eCarrier PH13NB01900GAAAA\u003c\/strong\u003e heat pump. The defrost control board is the brain of your heat pump's defrost cycle — it continuously monitors outdoor coil temperature and elapsed run time to determine when to initiate and terminate defrost, melting accumulated frost and ice from the outdoor coil. When this board fails, the outdoor unit will ice over completely, causing drastically reduced heating capacity, compressor overload, and eventual system lockout. Common symptoms of failure include: coil freezing solid in heating mode, the unit running continuously with little heat output, the system failing to switch into defrost mode, or erratic short-cycling of the defrost sequence.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePart Number \u0026amp; Specs:\u003c\/strong\u003e OEM part HK32EA007 | Also cross-references 1173636 and 1177927 | Monitors defrost demand via defrost thermostat and time-temperature logic | 24V control circuit compatible\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM vs Generic:\u003c\/strong\u003e This is a genuine Carrier OEM board, manufactured to exact factory tolerances and timing specifications. Aftermarket alternatives often use imprecise defrost timing logic, leading to under-defrosting (ice buildup) or over-defrosting (efficiency loss) — accelerating compressor and coil wear over time.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall Difficulty: 3\/5\u003c\/strong\u003e — Requires safely de-energizing the unit at the disconnect and thermostat before opening the control panel. Tools needed: #2 Phillips screwdriver, 1\/4\" nut driver, needle-nose pliers, and a multimeter to confirm 24V input. Photograph all wiring harness connections before removal. Transfer defrost thermostat and outdoor sensor leads carefully to matching terminals on the new board.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWarranty:\u003c\/strong\u003e Backed by Carrier's 1-year OEM manufacturer warranty. In stock and ships same business day from our warehouse — get your heat pump back online fast.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eCompatibility:\u003c\/strong\u003e Designed as a direct factory replacement for the \u003cstrong\u003eCarrier PH13NB01900GAAAA\u003c\/strong\u003e heat pump. Also compatible with select Bryant and Payne heat pump models sharing the HK32EA007 specification — verify your model data plate and existing board part number before ordering. Our team is available to confirm fitment prior to purchase. Order today for same-day shipping.\u003c\/p\u003e","brand":"Carrier","offers":[{"title":"OEM","offer_id":62641927848307,"sku":"CARRIE-PH13NB01900GAAAA-CONTROL_BOARD-HK32EA007","price":310.95,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62641927881075,"sku":"CARRIE-PH13NB01900GAAAA-CONTROL_BOARD-HK32EA007-GEN","price":273.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0984\/1190\/5395\/files\/nhvac-control-board-HK32EA007_7bb01248-1ee5-4bb9-9065-4fc23e12258b.jpg?v=1775026875","url":"https:\/\/nationalhvacparts.com\/products\/carrier-ph13nb01900gaaaa-control-board-15t5bk","provider":"National HVAC Parts","version":"1.0","type":"link"}