{"product_id":"carrier-py1pjb048130abaa-control-board-cyc67p","title":"OEM Carrier DSI Control Board LH33WP003 for PY1PJB048130ABAA","description":"\u003ch1\u003eOEM Carrier Direct Spark Ignition (DSI) Control Board LH33WP003 for Model PY1PJB048130ABAA\u003c\/h1\u003e\u003cp\u003eThis is the genuine OEM Direct Spark Ignition (DSI) control board for the \u003cstrong\u003eCarrier PY1PJB048130ABAA\u003c\/strong\u003e packaged rooftop unit. The DSI control board is the central brain of your unit's heating system — it manages the full ignition sequence including spark timing, gas valve activation, flame sensing, and safety lockout logic. When this board fails, common symptoms include: no heat with no visible spark attempt, repeated ignition lockout faults, the system starting then shutting off unexpectedly, or total loss of heating-stage control. If your unit is stuck in a lockout condition or throwing fault codes related to ignition failure, this board is the first component to diagnose.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePart Number:\u003c\/strong\u003e LH33WP003 (also replaces LH33WP003A) | OEM Carrier DSI Control Board | Microprocessor-based design\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM vs Generic:\u003c\/strong\u003e This OEM board is factory-matched to the exact timing, lockout thresholds, and flame-sensing sensitivity required by the \u003cstrong\u003ePY1PJB048130ABAA\u003c\/strong\u003e. Aftermarket boards may use looser tolerances that lead to nuisance lockouts, premature gas valve cycling, or reduced flame-sensing reliability — always specify OEM for commercial rooftop applications.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall difficulty: 3\/5\u003c\/strong\u003e — Requires disconnecting 24V control wiring, gas valve leads, igniter harness, and flame sensor wire. Label all connectors before removal. Tools needed: #2 Phillips screwdriver, 1\/4\" nut driver, multimeter, and camera for wiring documentation. Power down and verify zero voltage before touching any board terminals.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWarranty:\u003c\/strong\u003e 1-year OEM manufacturer warranty. Ships same business day from our warehouse when ordered before 3 PM local time.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eCompatibility:\u003c\/strong\u003e Engineered for the Carrier \u003cstrong\u003ePY1PJB048130ABAA\u003c\/strong\u003e packaged rooftop unit. Verify your existing board's part number against LH33WP003 or LH33WP003A before ordering. Cross-references include ICM Controls ICM291 as an aftermarket equivalent. For fitment questions, our HVAC parts specialists confirm compatibility before your order ships — contact us with your full model and serial number.\u003c\/p\u003e","brand":"Carrier","offers":[{"title":"OEM","offer_id":62641009328499,"sku":"CARRIE-PY1PJB048130ABAA-CONTROL_BOARD-LH33WP003","price":379.95,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62641009361267,"sku":"CARRIE-PY1PJB048130ABAA-CONTROL_BOARD-LH33WP003-GEN","price":333.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0984\/1190\/5395\/files\/nhvac-control-board-LH33WP003_8f58b4ea-ff86-46cd-ae5e-a9300e8bb5da.jpg?v=1775027871","url":"https:\/\/nationalhvacparts.com\/products\/carrier-py1pjb048130abaa-control-board-cyc67p","provider":"National HVAC Parts","version":"1.0","type":"link"}