{"product_id":"carrier-py3pna036060aa-control-board-cyc67p","title":"OEM Carrier DSI Control Board LH33WP003 for PY3PNA036060AA","description":"\u003ch1\u003eOEM Carrier Direct Spark Ignition (DSI) Control Board LH33WP003 for Model PY3PNA036060AA\u003c\/h1\u003e\u003cp\u003eThis is the factory OEM Direct Spark Ignition (DSI) control board for the \u003cstrong\u003eCarrier PY3PNA036060AA\u003c\/strong\u003e packaged rooftop unit. As the brain of the heating system, this microprocessor-based board orchestrates the entire ignition sequence — controlling the combustion and blower motors, firing the spark igniter, opening the gas valve, and monitoring flame sensing and lockout logic. When this board fails, symptoms include a complete no-heat condition, repeated ignition lockouts, erratic blower behavior, or a unit that sparks but never establishes or holds a flame. Replacing it with the correct OEM board restores factory-precise timing and safety logic.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM Part Number:\u003c\/strong\u003e LH33WP003 (also supersedes LH33WP003A) | Direct Spark Ignition (DSI) type | Microprocessor-based combustion control | Factory-matched for Carrier \u003cstrong\u003ePY3PNA036060AA\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM vs Generic:\u003c\/strong\u003e This OEM board preserves exact ignition timing windows, trial-for-ignition durations, and safety lockout thresholds specified by Carrier engineering. Aftermarket boards may use looser tolerances that can cause nuisance lockouts or, worse, unsafe ignition timing — never compromise on a control board.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall Difficulty: 3\/5\u003c\/strong\u003e — Requires shutting off 115V power and gas supply before beginning. Photograph all wiring harness connections before disconnecting. Tools needed: 1\/4\" and 5\/16\" nut driver, needle-nose pliers, multimeter. Verify all connector seating and restore power\/gas before test firing. Recommend a qualified HVAC technician for this repair.\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 — get your unit back online fast.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eCompatibility:\u003c\/strong\u003e Direct OEM replacement for Carrier model \u003cstrong\u003ePY3PNA036060AA\u003c\/strong\u003e packaged rooftop units. This board also fits select Carrier, Bryant, and Day \u0026amp; Night rooftop models using the LH33WP003\/3A ignition control. Always verify your existing board's part number on the label before ordering. Need help confirming fitment? Our HVAC parts team is ready to verify before you buy.\u003c\/p\u003e","brand":"Carrier","offers":[{"title":"OEM","offer_id":62640391684467,"sku":"CARRIE-PY3PNA036060AA-CONTROL_BOARD-LH33WP003","price":367.95,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62640391717235,"sku":"CARRIE-PY3PNA036060AA-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_6a3e3dcb-d96e-482c-af1a-07b7fa7858ba.jpg?v=1775028125","url":"https:\/\/nationalhvacparts.com\/products\/carrier-py3pna036060aa-control-board-cyc67p","provider":"National HVAC Parts","version":"1.0","type":"link"}