{"product_id":"carrier-py3pna060115ab-control-board-cyc67p","title":"OEM Carrier DSI Control Board LH33WP003 for PY3PNA060115AB","description":"\u003ch1\u003eOEM Carrier Direct Spark Ignition (DSI) Control Board LH33WP003 for Model PY3PNA060115AB\u003c\/h1\u003e\u003cp\u003eThis is the factory OEM \u003cstrong\u003eDirect Spark Ignition (DSI) Control Board\u003c\/strong\u003e (part number \u003cstrong\u003eLH33WP003\u003c\/strong\u003e) for the \u003cstrong\u003eCarrier PY3PNA060115AB\u003c\/strong\u003e packaged gas\/electric unit. As the brain of the heating system, this microprocessor-based board orchestrates every stage of the ignition sequence — commanding the inducer motor, opening the gas valve, firing the spark igniter, verifying flame via the flame-sensing rod, and managing timed lockout and retry sequences. When this board fails, symptoms typically include a no-heat condition, repeated ignition lockouts, an inducer motor that runs but never advances to ignition, or error codes flashing on the board's diagnostic LED.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePart Number:\u003c\/strong\u003e LH33WP003 (also supersedes LH33WP003A) | OEM Direct Spark Ignition (DSI) type | Microprocessor-based logic | Factory-matched timing and lockout parameters for Carrier PY3PNA060115AB\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM vs Generic:\u003c\/strong\u003e This is the genuine Carrier OEM board — not an aftermarket substitute. OEM boards ship with factory-calibrated ignition timing, trial-for-ignition duration, and flame-sensing thresholds. Aftermarket boards may use approximate timing values that can cause nuisance lockouts or, worse, unsafe ignition behavior.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall Difficulty: 3\/5\u003c\/strong\u003e — Requires disconnecting line-voltage wiring (always shut off power at the breaker and gas supply before beginning). Tools needed: ¼\" and 5\/16\" nut drivers, needle-nose pliers, multimeter, phone\/camera to photograph all wiring harness positions before removal. Note and match all terminal labels before disconnecting harnesses. Typical technician install time: 30–60 minutes.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWarranty:\u003c\/strong\u003e 1-year OEM factory warranty against defects in materials and workmanship. In-stock in our warehouse — ships same business day when ordered before 3 PM local time.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eCompatibility:\u003c\/strong\u003e Engineered as the direct factory replacement for \u003cstrong\u003eCarrier model PY3PNA060115AB\u003c\/strong\u003e packaged gas\/electric units. Also fits select Bryant and Day \u0026amp; Night units using the LH33WP003 \/ LH33WP003A board. Always verify your existing board's part number against the data plate inside the unit access panel before ordering. Have a question about fit? Our HVAC parts specialists confirm compatibility before you buy — reach us via chat or phone.\u003c\/p\u003e","brand":"Carrier","offers":[{"title":"OEM","offer_id":62640373956979,"sku":"CARRIE-PY3PNA060115AB-CONTROL_BOARD-LH33WP003","price":368.95,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62640373989747,"sku":"CARRIE-PY3PNA060115AB-CONTROL_BOARD-LH33WP003-GEN","price":324.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0984\/1190\/5395\/files\/nhvac-control-board-LH33WP003_0d95b1e5-2701-4b8b-9f2a-ab6882270c61.jpg?v=1775028172","url":"https:\/\/nationalhvacparts.com\/products\/carrier-py3pna060115ab-control-board-cyc67p","provider":"National HVAC Parts","version":"1.0","type":"link"}