{"product_id":"carrier-py3gna042060ab-control-board-cyc67p","title":"OEM Carrier DSI Control Board LH33WP003 for PY3GNA042060AB","description":"\u003ch1\u003eOEM Carrier Direct Spark Ignition (DSI) Control Board LH33WP003 for Model PY3GNA042060AB\u003c\/h1\u003e\u003cp\u003eThis is the OEM factory-specified \u003cstrong\u003eDirect Spark Ignition (DSI) Control Board\u003c\/strong\u003e (part number \u003cstrong\u003eLH33WP003\u003c\/strong\u003e) for the \u003cstrong\u003eCarrier PY3GNA042060AB\u003c\/strong\u003e packaged rooftop unit. \u003ccite index=\"8-2\"\u003eThis microprocessor-based board controls combustion, blower and indoor motors, the spark igniter, and the gas valve, while monitoring timing, trial for ignition, flame sensing, and lockout.\u003c\/cite\u003e \u003ccite index=\"2-1\"\u003eIt also monitors safety sensors in order to detect unsafe conditions and shut down the system if necessary to prevent hazards.\u003c\/cite\u003e Common failure symptoms include the unit entering hard lockout after one or more ignition attempts, the furnace failing to produce heat entirely, or error codes indicating ignition fault or flame-sensing failure.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM Part Number:\u003c\/strong\u003e LH33WP003 | Also supersedes LH33WP003A | Factory-original Carrier component with exact firmware and connector layout for the PY3GNA042060AB\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM vs Generic:\u003c\/strong\u003e \u003ccite index=\"2-2\"\u003eUsing real OEM controls enhances your HVAC unit's operational and energy efficiency, contributing to increased output and decreased costs over time.\u003c\/cite\u003e Generic aftermarket boards may lack model-specific timing calibration, risking repeated lockouts or unsafe ignition sequences.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall Difficulty: 3\/5\u003c\/strong\u003e — Disconnect power and gas before beginning. Label all wire harness connectors before removal. Tools needed: flat-head and Phillips screwdrivers, needle-nose pliers, phone or camera (photo wiring before disconnecting). Verify gas valve wiring polarity. Recommend professional installation for rooftop units.\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 cutoff.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eCompatibility:\u003c\/strong\u003e Designed for the Carrier \u003cstrong\u003ePY3GNA042060AB\u003c\/strong\u003e packaged rooftop gas\/electric unit. Always cross-reference your unit's data plate and confirm the part number printed on your existing board before ordering. Our fitment team is available to verify compatibility before you purchase — no guesswork required.\u003c\/p\u003e","brand":"Carrier","offers":[{"title":"OEM","offer_id":62640478716275,"sku":"CARRIE-PY3GNA042060AB-CONTROL_BOARD-LH33WP003","price":373.95,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62640478749043,"sku":"CARRIE-PY3GNA042060AB-CONTROL_BOARD-LH33WP003-GEN","price":328.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0984\/1190\/5395\/files\/nhvac-control-board-LH33WP003_58b327c3-0a20-4c73-af97-543ad903b9b1.jpg?v=1775028083","url":"https:\/\/nationalhvacparts.com\/products\/carrier-py3gna042060ab-control-board-cyc67p","provider":"National HVAC Parts","version":"1.0","type":"link"}