{"product_id":"carrier-py1ppa036100adba-control-board-cyc67p","title":"OEM Carrier DSI Control Board LH33WP003 — PY1PPA036100ADBA","description":"\u003ch1\u003eOEM Carrier Direct Spark Ignition (DSI) Control Board LH33WP003 for Model PY1PPA036100ADBA\u003c\/h1\u003e\u003cp\u003eThis is the factory OEM Direct Spark Ignition (DSI) control board for the \u003cstrong\u003eCarrier PY1PPA036100ADBA\u003c\/strong\u003e packaged rooftop unit. As the brain of the heating system, this board manages every critical ignition sequence function — from spark generation and gas valve activation to blower motor staging, flame sensing, and safety lockout. When this board fails, you may experience a complete no-heat condition, repeated ignition lockouts, incorrect blower timing, or persistent fault codes on the unit's LED diagnostic display.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePart Number:\u003c\/strong\u003e LH33WP003 | Direct Spark Ignition (DSI) Integrated Circuit Board | Factory OEM — engineered to Carrier's original design specifications for the PY1PPA036100ADBA\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eKey Functions:\u003c\/strong\u003e Controls spark ignition, gas valve activation, combustion blower and indoor fan motors, flame sensing, trial-for-ignition timing, and safety lockout sequences — with microprocessor-based LED fault code diagnostics for faster troubleshooting\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM vs Generic:\u003c\/strong\u003e The OEM LH33WP003 is built to exact factory tolerances, ensuring proper timing sequences, flame-sensing sensitivity, and motor staging. Generic aftermarket boards may have mismatched timing parameters that cause nuisance lockouts or accelerated secondary component wear.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall Difficulty: 3\/5\u003c\/strong\u003e — Requires disconnecting 120V line power and 24V control wiring harnesses. Tools needed: nut driver set, needle-nose pliers, multimeter, phone\/camera to photograph all wiring before removal. Recommend verifying gas valve wiring polarity before powering on. Professional installation strongly advised.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWarranty:\u003c\/strong\u003e 1-year OEM factory warranty. Ships same business day from our NationalHVACParts.com warehouse.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eCompatibility:\u003c\/strong\u003e This OEM control board is the factory-specified replacement for the \u003cstrong\u003eCarrier PY1PPA036100ADBA\u003c\/strong\u003e packaged rooftop unit. Always verify your existing board's part number (LH33WP003 or LH33WP003A) against your unit's data plate before ordering. Have a question about fitment? Our HVAC parts specialists verify compatibility before you buy — contact us today and get your unit back online fast.\u003c\/p\u003e","brand":"Carrier","offers":[{"title":"OEM","offer_id":62640873079155,"sku":"CARRIE-PY1PPA036100ADBA-CONTROL_BOARD-LH33WP003","price":562.95,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62640873111923,"sku":"CARRIE-PY1PPA036100ADBA-CONTROL_BOARD-LH33WP003-GEN","price":494.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0984\/1190\/5395\/files\/nhvac-control-board-LH33WP003_2e0b4a8b-2d39-46d4-80e5-81203cc6f61a.jpg?v=1775028256","url":"https:\/\/nationalhvacparts.com\/products\/carrier-py1ppa036100adba-control-board-cyc67p","provider":"National HVAC Parts","version":"1.0","type":"link"}