{"product_id":"carrier-py1ppa030060adba-control-board-cyc67p","title":"OEM Carrier DSI Control Board LH33WP003 for PY1PPA030060ADBA","description":"\u003ch1\u003eOEM Carrier Direct Spark Ignition (DSI) Control Board LH33WP003 for Model PY1PPA030060ADBA\u003c\/h1\u003e\u003cp\u003eThis is the genuine OEM Carrier \u003cstrong\u003eDirect Spark Ignition (DSI) Control Board\u003c\/strong\u003e (part number \u003cstrong\u003eLH33WP003\u003c\/strong\u003e), factory-specified for the \u003cstrong\u003eCarrier PY1PPA030060ADBA\u003c\/strong\u003e packaged rooftop unit. The DSI control board is the operational brain of your unit's heating system — it manages spark ignition sequencing, gas valve activation, inducer and blower motor operation, flame sensing, and safety lockout logic. When this board fails, common symptoms include a no-heat call with no ignition attempt, the system entering hard lockout after repeated failed ignition trials, or the unit shutting down within seconds of a heat call due to a false flame-sense fault. Replacing with the correct OEM board ensures factory-timed sequencing and full safety compliance.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecs:\u003c\/strong\u003e Direct Spark Ignition (DSI) microprocessor-based board | Control voltage: 24 VAC (18–30 VAC), 60 Hz | Line voltage: 208\/230 VAC, 60 Hz | Pre-purge: 45 sec | Trial for ignition: 5+2 sec | Retry period: every 20 sec for 15 min | Lockout: manual reset | Post-purge: 45 sec | LED fault-code diagnostics\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM vs. Generic:\u003c\/strong\u003e This is the genuine Carrier factory board, built to exact design tolerances. Aftermarket boards (e.g., ICM291) offer a lower-cost alternative but may exhibit timing variances that can cause nuisance lockouts or void equipment warranties. OEM is always recommended for commercial rooftop applications.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall difficulty: 3\/5\u003c\/strong\u003e — Disconnect all power before servicing. Tools needed: Phillips and flathead screwdrivers, needle-nose pliers, phone or camera to photograph all wiring harness connections before removal. Verify 24 VAC transformer output before condemning the board. Recommended for qualified HVAC technicians.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWarranty:\u003c\/strong\u003e 1-year OEM factory 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 Designed for the \u003cstrong\u003eCarrier PY1PPA030060ADBA\u003c\/strong\u003e packaged rooftop unit. Also cross-references to part suffix variant \u003cstrong\u003eLH33WP003A\u003c\/strong\u003e. Verify your unit's data plate and existing board part number before ordering. Our HVAC parts specialists are available to confirm fitment — contact us before you order for peace of mind. \u003cstrong\u003eIn stock and ready to ship today.\u003c\/strong\u003e\u003c\/p\u003e","brand":"Carrier","offers":[{"title":"OEM","offer_id":62640898310515,"sku":"CARRIE-PY1PPA030060ADBA-CONTROL_BOARD-LH33WP003","price":600.95,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62640898343283,"sku":"CARRIE-PY1PPA030060ADBA-CONTROL_BOARD-LH33WP003-GEN","price":528.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0984\/1190\/5395\/files\/nhvac-control-board-LH33WP003_ad31fa89-9859-4011-b176-dba92f659ff2.jpg?v=1775027910","url":"https:\/\/nationalhvacparts.com\/products\/carrier-py1ppa030060adba-control-board-cyc67p","provider":"National HVAC Parts","version":"1.0","type":"link"}