{"product_id":"carrier-py3pna042060ab-control-board-cyc67p","title":"OEM Carrier DSI Control Board LH33WP003 for PY3PNA042060AB","description":"\u003ch1\u003eOEM Carrier Direct Spark Ignition (DSI) Control Board LH33WP003 for Model PY3PNA042060AB\u003c\/h1\u003e\u003cp\u003eThis is the genuine OEM \u003cstrong\u003eCarrier LH33WP003\u003c\/strong\u003e Direct Spark Ignition (DSI) Control Board, the factory-specified replacement for the \u003cstrong\u003eCarrier PY3PNA042060AB\u003c\/strong\u003e packaged unit. As the brain of the heating system, this microprocessor-based board orchestrates every stage of the ignition sequence — commanding the spark igniter, opening the gas valve, monitoring flame sensing, and timing the blower and inducer motors. When this board fails, symptoms include persistent ignition lockout, failure to ignite after the trial period, erratic blower operation, or a complete no-heat condition with no error codes responding normally.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePart Number:\u003c\/strong\u003e LH33WP003 (also supersedes LH33WP003A) | Direct Spark Ignition (DSI) type | Microprocessor-based logic board | Factory-matched for Carrier PY3PNA042060AB\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM vs Generic:\u003c\/strong\u003e The genuine OEM board ensures exact timing parameters for ignition trial, lockout thresholds, and flame-sense sensitivity. Aftermarket boards may use wider tolerances, risking nuisance lockouts or unsafe fault-handling behavior.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall Difficulty: 3\/5\u003c\/strong\u003e — Disconnect power and gas before servicing. Document all wiring harness connections with photos before removal. Tools needed: 1\/4\" nut driver, flathead screwdriver, needle-nose pliers, and a multimeter for pre\/post verification. We recommend a licensed HVAC technician for this repair.\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 warehouse when ordered before 3 PM EST.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eCompatibility:\u003c\/strong\u003e Engineered for the \u003cstrong\u003eCarrier PY3PNA042060AB\u003c\/strong\u003e packaged unit. This board also fits select Carrier, Bryant, Payne, and Day \u0026amp; Night rooftop and packaged gas units that utilize the LH33WP003\/LH33WP003A DSI control. Always verify your existing board's part number against your unit's data plate before ordering. Not sure it fits? Contact our HVAC parts specialists — we verify fitment before you buy.\u003c\/p\u003e","brand":"Carrier","offers":[{"title":"OEM","offer_id":62640387096947,"sku":"CARRIE-PY3PNA042060AB-CONTROL_BOARD-LH33WP003","price":372.95,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62640387129715,"sku":"CARRIE-PY3PNA042060AB-CONTROL_BOARD-LH33WP003-GEN","price":327.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0984\/1190\/5395\/files\/nhvac-control-board-LH33WP003_97c39cee-cdfd-4e60-bc6c-6acfc711e19e.jpg?v=1775028133","url":"https:\/\/nationalhvacparts.com\/products\/carrier-py3pna042060ab-control-board-cyc67p","provider":"National HVAC Parts","version":"1.0","type":"link"}