{"product_id":"carrier-py1pna048080aeba-control-board-cyc67p","title":"OEM Carrier DSI Control Board LH33WP003 for PY1PNA048080AEBA","description":"\u003ch1\u003eOEM Carrier Direct Spark Ignition (DSI) Control Board LH33WP003 for Model PY1PNA048080AEBA\u003c\/h1\u003e\u003cp\u003eThis is the genuine OEM Direct Spark Ignition (DSI) Control Board for the \u003cstrong\u003eCarrier PY1PNA048080AEBA\u003c\/strong\u003e packaged unit. As the central brain of the heating system, this board manages the entire ignition sequence — commanding the spark igniter, controlling the gas valve, monitoring flame sensing, and timing each trial-for-ignition attempt. It also governs blower and indoor motor operation while continuously monitoring safety inputs. When this board fails, common symptoms include a hard lockout with no ignition attempt, the unit starting then shutting down mid-cycle, erratic blower behavior, or a complete loss of heating with no fault codes cycling correctly.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM Part Number:\u003c\/strong\u003e LH33WP003 | Also supersedes LH33WP003A | Carrier factory-original replacement\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFunction:\u003c\/strong\u003e Microprocessor-based DSI control — manages spark ignition, gas valve sequencing, flame sensing, trial-for-ignition timing, blower motor staging, and safety lockout logic\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM vs Generic:\u003c\/strong\u003e This factory-original board ships pre-programmed with exact ignition timing, lockout thresholds, and blower delay profiles for the PY1PNA048080AEBA. Aftermarket boards may require jumper configuration and often deviate on lockout timing, risking nuisance trips or unsafe ignition retries.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall Difficulty: 4\/5\u003c\/strong\u003e — Requires shutting off gas supply and 120V power at disconnect before beginning work. Tools needed: flat-head and Phillips screwdrivers, 1\/4\" nut driver, needle-nose pliers, multimeter for 24V control circuit verification. Photograph all harness connections before removal. Confirm fault code history before board replacement to rule out upstream causes (flame sensor, gas valve, pressure switch).\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWarranty:\u003c\/strong\u003e 1-year OEM factory warranty. In-stock and ships same business day from our warehouse.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eCompatibility:\u003c\/strong\u003e Engineered as a direct drop-in replacement for \u003cstrong\u003eCarrier model PY1PNA048080AEBA\u003c\/strong\u003e. Verify your existing board's part number (LH33WP003 or LH33WP003A) against your unit's data plate before ordering. Need help confirming fitment? Our HVAC parts specialists verify compatibility before every order — reach out before you buy.\u003c\/p\u003e","brand":"Carrier","offers":[{"title":"OEM","offer_id":62640945234291,"sku":"CARRIE-PY1PNA048080AEBA-CONTROL_BOARD-LH33WP003","price":412.95,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62640945267059,"sku":"CARRIE-PY1PNA048080AEBA-CONTROL_BOARD-LH33WP003-GEN","price":363.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0984\/1190\/5395\/files\/nhvac-control-board-LH33WP003_c1ca160a-3572-448c-b153-4c0495fffffe.jpg?v=1775027887","url":"https:\/\/nationalhvacparts.com\/products\/carrier-py1pna048080aeba-control-board-cyc67p","provider":"National HVAC Parts","version":"1.0","type":"link"}