{"product_id":"carrier-cp48p448p405011cp-control-board-cyc67o","title":"OEM Carrier DSI Control Board LH33WP002 for CP48P448P405011CP","description":"\u003ch1\u003eOEM Carrier Direct Spark Ignition (DSI) Control Board LH33WP002 for Model CP48P448P405011CP\u003c\/h1\u003e\u003cp\u003eThis is the factory OEM Direct Spark Ignition (DSI) control board for the \u003cstrong\u003eCarrier CP48P448P405011CP\u003c\/strong\u003e packaged unit. The DSI control board serves as the brain of the heating system, orchestrating the ignition sequence including inducer startup, spark ignition timing, flame verification, and gas valve activation. When this board fails, common symptoms include repeated ignition lockout, no-heat calls with a running inducer but no spark, erratic cycling, or a completely unresponsive heating system despite a functioning thermostat and power supply.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecs:\u003c\/strong\u003e Direct Spark Ignition (DSI) control board | OEM Part Number: LH33WP002 | Factory-matched board layout and terminal configuration | 24V control circuit compatible | Designed for Carrier CP48 series packaged gas\/electric units\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM vs Generic:\u003c\/strong\u003e This OEM board is programmed with Carrier's exact ignition timing, lockout retry logic, and fault detection parameters. Aftermarket boards often use generic timing curves that can cause nuisance lockouts, improper flame response, or voided equipment warranties — always choose OEM for control boards.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall difficulty: 3\/5\u003c\/strong\u003e — Requires disconnecting 24V and line-voltage wiring harnesses. Tools needed: flathead and Phillips screwdrivers, needle-nose pliers, phone or camera to document wiring before removal, and a multimeter to verify 24V supply. Always disconnect power at the disconnect switch before servicing. Not recommended for DIY without prior HVAC experience.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWarranty:\u003c\/strong\u003e 1-year OEM factory warranty against defects. In-stock units ship same business day when ordered before 3PM local time.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eCompatibility:\u003c\/strong\u003e This control board is the OEM-specified replacement for the \u003cstrong\u003eCarrier CP48P448P405011CP\u003c\/strong\u003e packaged gas\/electric unit. The CP48 series is a commercial-grade Carrier packaged rooftop\/ground-level unit. Confirm your existing board's part number matches \u003cstrong\u003eLH33WP002\u003c\/strong\u003e before ordering. If your data plate or existing board label differs, contact our fitment team — we verify compatibility before every order ships.\u003c\/p\u003e","brand":"Carrier","offers":[{"title":"OEM","offer_id":62909596205427,"sku":"CARRIE-CP48P448P405011CP-CONTROL_BOARD-LH33WP002","price":156.0,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62909596238195,"sku":"CARRIE-CP48P448P405011CP-CONTROL_BOARD-LH33WP002-GEN","price":90.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0984\/1190\/5395\/files\/nhvac-control-board-furnace-LH33WP002_a312ddac-6114-4d01-a0cf-6999676a96d4.jpg?v=1782914362","url":"https:\/\/nationalhvacparts.com\/products\/carrier-cp48p448p405011cp-control-board-cyc67o","provider":"National HVAC Parts","version":"1.0","type":"link"}