{"product_id":"carrier-ph3znb036000aa-control-board-15t5bk","title":"OEM Carrier Defrost Control Board HK32EA007 for PH3ZNB036000AA","description":"\u003ch1\u003eOEM Carrier Defrost Control Board HK32EA007 for Model PH3ZNB036000AA\u003c\/h1\u003e\u003cp\u003eThis is the genuine OEM Carrier defrost control board (part number \u003cstrong\u003eHK32EA007\u003c\/strong\u003e), factory-specified for the \u003cstrong\u003eCarrier PH3ZNB036000AA\u003c\/strong\u003e heat pump. The defrost control board monitors outdoor coil temperature and initiates timed defrost cycles to shed ice buildup from the evaporator coils — a critical function in any heat pump operating in cold climates. When this board fails, symptoms include excessive ice accumulation on the outdoor coil, the unit running in permanent heating or cooling mode without reversing, or the heat pump locking out entirely due to incomplete defrost cycles.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePart Specs:\u003c\/strong\u003e OEM Part No. HK32EA007 | Replaces cross-reference numbers 1173636 and 1177927 | Factory-matched timing and temperature logic for Carrier heat pump defrost sequences\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM vs Generic:\u003c\/strong\u003e This is a genuine Carrier board — not an aftermarket clone. OEM boards carry factory-calibrated defrost timing and coil sensor thresholds. Generic boards may ship with incorrect defrost intervals, leading to premature compressor wear or recurring icing.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall Difficulty: 3\/5\u003c\/strong\u003e — Turn off power at the disconnect and breaker before beginning. Tools needed: Phillips and flathead screwdrivers, needle-nose pliers, phone\/camera to photograph all wiring connections prior to removal. Label all wires before disconnecting. The board mounts inside the air handler cabinet; allow 30–60 minutes for a careful swap.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWarranty:\u003c\/strong\u003e 1-year OEM manufacturer warranty from date of purchase. Ships same business day from our warehouse when ordered by cutoff.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eCompatibility:\u003c\/strong\u003e Engineered as a direct OEM replacement for the \u003cstrong\u003eCarrier PH3ZNB036000AA\u003c\/strong\u003e heat pump. This board also cross-references HK32EA001 in many Carrier, Bryant, and Payne heat pump applications — always verify your existing part number against the unit's wiring diagram before ordering. Have questions about fitment? Our HVAC parts specialists confirm compatibility before you buy. \u003cstrong\u003eOrder now — in stock and ships today.\u003c\/strong\u003e\u003c\/p\u003e","brand":"Carrier","offers":[{"title":"OEM","offer_id":62641337729395,"sku":"CARRIE-PH3ZNB036000AA-CONTROL_BOARD-HK32EA007","price":310.95,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62641337762163,"sku":"CARRIE-PH3ZNB036000AA-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_757d547a-bf3e-41f0-ae7f-90cb12ae9e50.jpg?v=1775027008","url":"https:\/\/nationalhvacparts.com\/products\/carrier-ph3znb036000aa-control-board-15t5bk","provider":"National HVAC Parts","version":"1.0","type":"link"}