{"product_id":"carrier-py3pna036060nb-control-board-cyc67p","title":"OEM Carrier DSI Control Board LH33WP003 for PY3PNA036060NB","description":"\u003ch1\u003eOEM Carrier Direct Spark Ignition (DSI) Control Board LH33WP003 for Model PY3PNA036060NB\u003c\/h1\u003e\u003cp\u003eThe Carrier LH33WP003 is the factory-specified Direct Spark Ignition (DSI) control board for the \u003cstrong\u003ePY3PNA036060NB\u003c\/strong\u003e packaged rooftop unit. This microprocessor-based board is the nerve center of your heating system — it orchestrates spark ignition sequencing, gas valve activation, inducer and blower motor operation, flame sensing, and automatic safety lockout. When it fails, symptoms typically include a no-heat call with no spark attempt, the unit locking out after one ignition trial, erratic blower behavior, or complete system shutdown with no 24V control signal response.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePart Number:\u003c\/strong\u003e LH33WP003 (also supersedes LH33WP003A) | Factory Authorized Carrier OEM replacement | Honeywell cross-reference: 1068-11, 1068-83-119A\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM vs Generic:\u003c\/strong\u003e This is a genuine Carrier factory-authorized board built to exact design specifications — not an aftermarket substitute. OEM boards preserve original ignition timing sequences (pre-purge, trial-for-ignition, lockout thresholds) that protect your heat exchanger and gas valve from premature wear. Aftermarket boards may deviate from factory timing, voiding equipment warranties.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall Difficulty: 3\/5\u003c\/strong\u003e — Requires rooftop access and disconnecting 24V and line-voltage wiring harnesses. Tools needed: ¼\" and 5\/16\" nut drivers, needle-nose pliers, multimeter (to verify 24V coil and incoming line voltage before condemning board). Always photograph all wiring connections before removal. Recommend qualified HVAC technician for gas-appliance control board replacement.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWarranty:\u003c\/strong\u003e 1-year OEM factory warranty. Ships same business day from our climate-controlled warehouse. Securely packaged to prevent ESD and transit damage.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eCompatibility:\u003c\/strong\u003e Engineered as a direct drop-in replacement for Carrier model \u003cstrong\u003ePY3PNA036060NB\u003c\/strong\u003e packaged rooftop units. Also fits a wide range of Carrier, Bryant, and Payne packaged and split-system units using the LH33WP003\/3A board — verify your unit's data plate and existing board part number before ordering. Need fitment confirmation? Our HVAC parts specialists verify compatibility before you buy — contact us today. \u003cstrong\u003eIn stock and ships today.\u003c\/strong\u003e\u003c\/p\u003e","brand":"Carrier","offers":[{"title":"OEM","offer_id":62640390177139,"sku":"CARRIE-PY3PNA036060NB-CONTROL_BOARD-LH33WP003","price":596.95,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62640390209907,"sku":"CARRIE-PY3PNA036060NB-CONTROL_BOARD-LH33WP003-GEN","price":524.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0984\/1190\/5395\/files\/nhvac-control-board-LH33WP003_b0b5a0e0-f7bc-4e84-977f-a4a63c0420a4.jpg?v=1775028127","url":"https:\/\/nationalhvacparts.com\/products\/carrier-py3pna036060nb-control-board-cyc67p","provider":"National HVAC Parts","version":"1.0","type":"link"}