{"product_id":"carrier-py1ppa048120afba-control-board-cyc67p","title":"OEM Carrier DSI Control Board LH33WP003 for PY1PPA048120AFBA","description":"\u003ch1\u003eOEM Carrier Direct Spark Ignition (DSI) Control Board LH33WP003 for Model PY1PPA048120AFBA\u003c\/h1\u003e\u003cp\u003eThis is the genuine OEM Direct Spark Ignition (DSI) control board for the \u003cstrong\u003eCarrier PY1PPA048120AFBA\u003c\/strong\u003e packaged gas\/electric unit. As the brain of the heating system, this microprocessor-based board orchestrates the entire combustion sequence — controlling the spark igniter, gas valve, combustion blower, and indoor blower motors while continuously monitoring flame sensing, trial-for-ignition timing, and safety lockout conditions. When this board fails, symptoms typically include a complete no-heat condition, repeated ignition lockout faults, erratic short-cycling, or the system failing to advance past the inducer pre-purge stage.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePart Number:\u003c\/strong\u003e LH33WP003 (also supersedes LH33WP003A) | OEM-matched microprocessor logic | Direct Spark Ignition (DSI) architecture\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM vs Generic:\u003c\/strong\u003e This factory-original board uses Carrier-validated firmware and timing sequences. Aftermarket boards may deviate in trial-for-ignition timing and lockout logic, risking nuisance faults or unsafe operation. OEM is always the recommended replacement for combustion control.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall Difficulty: 3\/5\u003c\/strong\u003e — Disconnect power and gas before servicing. Tools needed: 1\/4\" and 5\/16\" nut drivers, needle-nose pliers, smartphone for wiring photo. Label all connector positions before removal. Always verify 24V control circuit integrity after installation.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWarranty:\u003c\/strong\u003e 1-year OEM factory warranty against defects. Ships same business day from our climate-controlled warehouse.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eCompatibility:\u003c\/strong\u003e Factory-specified replacement for Carrier model \u003cstrong\u003ePY1PPA048120AFBA\u003c\/strong\u003e packaged units. Also fits select Bryant and Payne rooftop and packaged gas units using the LH33WP003\/LH33WP003A control board. Verify your existing board's part number on the board label before ordering. Not sure it fits? Our HVAC parts specialists confirm fitment before you buy — contact us before placing your order.\u003c\/p\u003e","brand":"Carrier","offers":[{"title":"OEM","offer_id":62640825270643,"sku":"CARRIE-PY1PPA048120AFBA-CONTROL_BOARD-LH33WP003","price":367.95,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62640825303411,"sku":"CARRIE-PY1PPA048120AFBA-CONTROL_BOARD-LH33WP003-GEN","price":323.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0984\/1190\/5395\/files\/nhvac-control-board-LH33WP003_9433fa4c-9610-41fb-8e09-07602b27dcd2.jpg?v=1775027921","url":"https:\/\/nationalhvacparts.com\/products\/carrier-py1ppa048120afba-control-board-cyc67p","provider":"National HVAC Parts","version":"1.0","type":"link"}