{"product_id":"carrier-py1ppb036090aaaa-control-board-cyc67p","title":"OEM Carrier DSI Control Board LH33WP003 for PY1PPB036090AAAA","description":"\u003ch1\u003eOEM Carrier Direct Spark Ignition (DSI) Control Board LH33WP003 for Model PY1PPB036090AAAA\u003c\/h1\u003e\u003cp\u003eThis is the genuine OEM \u003cstrong\u003eCarrier LH33WP003 Direct Spark Ignition (DSI) Control Board\u003c\/strong\u003e, the factory-specified replacement for the \u003cstrong\u003eCarrier PY1PPB036090AAAA\u003c\/strong\u003e packaged gas\/electric unit. The DSI control board is the brain of your system's heating sequence — it orchestrates the combustion process by controlling the spark igniter and gas valve, managing blower and indoor motor operation, and continuously monitoring flame sensing, trial-for-ignition timing, and safety lockout logic. When this board fails, you'll typically experience a complete no-heat condition, repeated ignition lockouts, short-cycling after burner light-off, or a system that attempts ignition but shuts down immediately without establishing a stable flame.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePart Number \u0026amp; Type:\u003c\/strong\u003e OEM Carrier LH33WP003 | Direct Spark Ignition (DSI) Microprocessor-Based Control Board | Monitors combustion, blower, spark igniter, gas valve, flame sensing, and safety lockout\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM vs Generic:\u003c\/strong\u003e This is the genuine factory OEM board — not an aftermarket substitute. OEM boards carry the exact firmware, timing sequences, and safety trip points programmed for your unit. Generic boards may use mismatched lockout timing or flame-sense thresholds, leading to nuisance shutdowns or reduced safety margin.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall Difficulty: 4\/5\u003c\/strong\u003e — Control board replacement on a packaged rooftop\/gas-electric unit requires disconnecting 120V and 24V wiring harnesses, documenting all connector positions before removal, and confirming proper ground continuity post-install. Tools needed: flathead and Phillips screwdrivers, needle-nose pliers, multimeter, camera\/phone for wiring photo documentation. Recommend a licensed HVAC technician for this repair.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWarranty \u0026amp; Shipping:\u003c\/strong\u003e 1-year OEM factory warranty against defects. In stock — ships same business day from our warehouse.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eCompatibility:\u003c\/strong\u003e Directly fits Carrier model \u003cstrong\u003ePY1PPB036090AAAA\u003c\/strong\u003e packaged gas\/electric units. Also replaces LH33WP003A variant boards. Verify your existing board's part number on the board label before ordering. Our fitment team is available to confirm compatibility before you purchase — just reach out with your full model and serial number.\u003c\/p\u003e","brand":"Carrier","offers":[{"title":"OEM","offer_id":62640799875443,"sku":"CARRIE-PY1PPB036090AAAA-CONTROL_BOARD-LH33WP003","price":379.95,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62640799908211,"sku":"CARRIE-PY1PPB036090AAAA-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_6be472f6-3e12-4c00-af95-cf173387d333.jpg?v=1775027934","url":"https:\/\/nationalhvacparts.com\/products\/carrier-py1ppb036090aaaa-control-board-cyc67p","provider":"National HVAC Parts","version":"1.0","type":"link"}