{"product_id":"carrier-ph3znb024000ab-control-board-15t5bk","title":"OEM Carrier Defrost Control Board HK32EA007 for PH3ZNB024000AB","description":"\u003ch1\u003eOEM Carrier Defrost Control Board HK32EA007 for Model PH3ZNB024000AB\u003c\/h1\u003e\u003cp\u003eThis is the factory OEM defrost control board for the \u003cstrong\u003eCarrier PH3ZNB024000AB\u003c\/strong\u003e heat pump. The defrost control board manages and initiates timed defrost cycles to prevent ice accumulation on the outdoor coil — a critical function in heat pump operation during cold-weather heating. When this board fails, common symptoms include a heavily iced outdoor coil, the unit failing to enter defrost mode, erratic short-cycling, or the system locking out on a fault code. Replacing it with the correct OEM part restores factory-programmed defrost timing and sensor logic.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecs:\u003c\/strong\u003e OEM Part Number HK32EA007 | 24V control circuit | Factory-programmed defrost timing intervals | 1-phase | Compatible voltage: 230V system\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM vs Generic:\u003c\/strong\u003e This is a genuine Carrier OEM board with factory-calibrated defrost logic. Aftermarket boards may use non-matching timing intervals or sensor thresholds, leading to premature coil icing or overcooling of the refrigerant circuit — accelerating compressor wear.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall Difficulty: 3\/5\u003c\/strong\u003e — Disconnect power at the disconnect box and breaker before servicing. Tools needed: 1\/4\" and 5\/16\" nut drivers, needle-nose pliers, a phone camera to photograph all wiring harness positions before removal. Note all jumper or DIP switch settings on the old board and replicate exactly. A multimeter is recommended to verify 24V signal inputs post-installation.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWarranty:\u003c\/strong\u003e 1-year OEM manufacturer warranty. Ships same business day from our warehouse when ordered before 3 PM local time.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eCompatibility:\u003c\/strong\u003e Designed as the direct OEM replacement for \u003cstrong\u003eCarrier model PH3ZNB024000AB\u003c\/strong\u003e heat pump systems. Always verify your existing board's part number label matches HK32EA007 before ordering. Cross-references include CEPL130524-21 and CEBD430524-24A. Questions about fitment? Our HVAC parts specialists verify compatibility before you order — call or chat today.\u003c\/p\u003e","brand":"Carrier","offers":[{"title":"OEM","offer_id":62641340514675,"sku":"CARRIE-PH3ZNB024000AB-CONTROL_BOARD-HK32EA007","price":275.99,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62641340547443,"sku":"CARRIE-PH3ZNB024000AB-CONTROL_BOARD-HK32EA007-GEN","price":242.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0984\/1190\/5395\/files\/nhvac-control-board-HK32EA007_efe7349b-7504-4a14-808d-63cab739217f.jpg?v=1775027003","url":"https:\/\/nationalhvacparts.com\/products\/carrier-ph3znb024000ab-control-board-15t5bk","provider":"National HVAC Parts","version":"1.0","type":"link"}