{"product_id":"carrier-ph4rng018000baaa-control-board-15t5bk","title":"OEM Carrier Defrost Control Board HK32EA001 — PH4RNG018000BAAA","description":"\u003ch1\u003eOEM Carrier Defrost Control Board HK32EA001 for Model PH4RNG018000BAAA\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 PH4RNG018000BAAA\u003c\/strong\u003e heat pump system. The defrost control board manages the automatic defrost cycle, monitoring outdoor coil temperatures and initiating timed defrost sequences to prevent ice buildup on the outdoor unit. When this board fails, common symptoms include the outdoor coil freezing solid, the unit failing to enter or exit defrost mode, erratic short-cycling, system lockout faults, or a complete loss of heating capacity in cold weather conditions.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecs:\u003c\/strong\u003e OEM Part Number HK32EA001 | Factory-matched defrost timing and temperature logic | Direct plug-and-play connector replacement | Compatible with Carrier PH4RNG018000BAAA heat pump platform\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM vs Generic:\u003c\/strong\u003e This is a genuine OEM Carrier board — not an aftermarket substitute. OEM boards preserve factory-calibrated defrost timing intervals and termination logic. Generic boards frequently use off-spec components that cause premature failure or incorrect defrost behavior, risking compressor damage from sustained ice loading.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall Difficulty: 3\/5\u003c\/strong\u003e — Requires disconnecting 24V control wiring, line-voltage connections, and multiple harness plugs. Tools needed: flathead and Phillips screwdrivers, needle-nose pliers, multimeter, and camera\/phone to photograph all wiring before disconnection. Always disconnect power at the breaker and verify zero voltage before handling. If unfamiliar with heat pump control wiring, consult a licensed HVAC technician.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWarranty:\u003c\/strong\u003e 1-year OEM factory warranty against manufacturing defects. Ships same business day from our NationalHVACParts.com warehouse when ordered before cutoff.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eCompatibility:\u003c\/strong\u003e Engineered as a direct OEM replacement for Carrier model \u003cstrong\u003ePH4RNG018000BAAA\u003c\/strong\u003e. Always cross-reference your unit's data plate and existing board part number against HK32EA001 before ordering. Our parts team is available to verify fitment — contact us before you buy if you have any questions. \u003cstrong\u003eOrder now and ship today.\u003c\/strong\u003e\u003c\/p\u003e","brand":"Carrier","offers":[{"title":"OEM","offer_id":62641213047155,"sku":"CARRIE-PH4RNG018000BAAA-CONTROL_BOARD-HK32EA001","price":193.95,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62641213079923,"sku":"CARRIE-PH4RNG018000BAAA-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_62d6caab-5db5-450d-b6c0-cd9390d25b88.jpg?v=1775026795","url":"https:\/\/nationalhvacparts.com\/products\/carrier-ph4rng018000baaa-control-board-15t5bk","provider":"National HVAC Parts","version":"1.0","type":"link"}