{"product_id":"carrier-ph13nr042000ahaa-control-board-15t5bk","title":"OEM Carrier Defrost Control Board HK32EA001 for PH13NR042000AHAA","description":"\u003ch1\u003eOEM Carrier Defrost Control Board HK32EA001 for Model PH13NR042000AHAA\u003c\/h1\u003e\u003cp\u003eThis OEM defrost control board (part number \u003cstrong\u003eHK32EA001\u003c\/strong\u003e) is the factory-specified replacement for the \u003cstrong\u003eCarrier PH13NR042000AHAA\u003c\/strong\u003e heat pump. The defrost control board manages the automatic defrost cycle, monitoring outdoor coil temperature and time intervals to prevent ice buildup on the heat pump's outdoor unit. When this board fails, common symptoms include a heat pump stuck in defrost mode, a unit that never initiates a defrost cycle (leading to heavy ice accumulation on the coil), erratic heating performance, or a complete system lockout with a fault code on the thermostat.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecs:\u003c\/strong\u003e OEM Part # HK32EA001 | Factory defrost control board | Compatible with Carrier R-410A heat pump systems | Includes integrated defrost timing and temperature logic circuitry\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM vs Generic:\u003c\/strong\u003e This is a genuine OEM Carrier board engineered to exact factory specifications. Aftermarket boards may not replicate Carrier's precise defrost timing algorithms, risking coil damage, compressor strain, and shortened system life.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall Difficulty: 3\/5\u003c\/strong\u003e — Requires disconnecting power at the breaker and discharging any residual voltage before accessing the control compartment. Tools needed: Phillips and flathead screwdrivers, 1\/4\" nut driver, needle-nose pliers, and a multimeter for post-install verification. Photograph all wiring connections before disconnecting the old board. A licensed HVAC technician is recommended for this repair.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWarranty:\u003c\/strong\u003e 1-year OEM factory warranty against defects in materials and workmanship. In-stock and ships same business day from our warehouse.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eCompatibility:\u003c\/strong\u003e Designed specifically for the \u003cstrong\u003eCarrier PH13NR042000AHAA\u003c\/strong\u003e heat pump. Always verify your existing board's part number against \u003cstrong\u003eHK32EA001\u003c\/strong\u003e before ordering. If you need fitment confirmation, our HVAC parts specialists are available to verify compatibility before your purchase — no guesswork required.\u003c\/p\u003e","brand":"Carrier","offers":[{"title":"OEM","offer_id":62641863950707,"sku":"CARRIE-PH13NR042000AHAA-CONTROL_BOARD-HK32EA001","price":193.95,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62641863983475,"sku":"CARRIE-PH13NR042000AHAA-CONTROL_BOARD-HK32EA001-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-HK32EA001_dcc329ab-1464-4625-ab98-db829890b7f9.jpg?v=1775026459","url":"https:\/\/nationalhvacparts.com\/products\/carrier-ph13nr042000ahaa-control-board-15t5bk","provider":"National HVAC Parts","version":"1.0","type":"link"}