{"product_id":"carrier-py1pjb048130aaaa-control-board-cyc67p","title":"OEM Carrier DSI Control Board LH33WP003 for PY1PJB048130AAAA","description":"\u003ch1\u003eOEM Carrier Direct Spark Ignition (DSI) Control Board LH33WP003 for Model PY1PJB048130AAAA\u003c\/h1\u003e\u003cp\u003eThis is the OEM factory-specified \u003cstrong\u003eDirect Spark Ignition (DSI) control board\u003c\/strong\u003e for the \u003cstrong\u003eCarrier PY1PJB048130AAAA\u003c\/strong\u003e packaged unit. The DSI control board is the brain of your unit's heating system — it sequences the entire ignition cycle from pre-purge through flame sensing, and commands the gas valve, combustion blower, and indoor fan motor. When this board fails, you'll typically experience a no-heat condition, repeated ignition lockouts, or a furnace that attempts to light but shuts down and flashes a fault code. A failed board may also cause erratic blower behavior or a system that appears completely unresponsive to thermostat calls for heat.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecs:\u003c\/strong\u003e Direct Spark Ignition (DSI) microprocessor-based control | Control Voltage: 24 VAC (18–30 VAC), 60 Hz | Line Voltage: 208\/230 VAC, 60 Hz | Pre-Purge: 45 seconds | Trial for Ignition: 5+2 seconds | Manual reset lockout | Compatible with LP and Natural Gas | Status LED for fault code diagnostics | Dimensions: 5 × 7 × 1.875 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM vs Generic:\u003c\/strong\u003e This is the genuine Carrier OEM part number \u003cstrong\u003eLH33WP003\u003c\/strong\u003e, engineered to exact factory specifications for the PY1PJB048130AAAA. OEM boards feature precise timing sequences and safety lockout thresholds calibrated to your unit — generic aftermarket boards can introduce mismatched timing that accelerates wear on the gas valve and igniter.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall Difficulty: 3\/5\u003c\/strong\u003e — Disconnect power and gas before starting. Label all low-voltage wiring harnesses and photograph the board before disconnecting. Tools needed: 1\/4\" and 5\/16\" nut drivers, needle-nose pliers, multimeter. Verify all fault codes are cleared after installation before returning unit to service.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWarranty:\u003c\/strong\u003e 1-year OEM factory warranty. In-stock orders ship same business day from our warehouse when ordered before cutoff.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eCompatibility:\u003c\/strong\u003e Engineered as the direct OEM replacement for the \u003cstrong\u003eCarrier PY1PJB048130AAAA\u003c\/strong\u003e packaged unit. Also cross-references part number LH33WP003A. Verify your existing board's part number on the label before ordering. Our HVAC specialists are available to confirm fitment — contact us before you order if you have any questions.\u003c\/p\u003e","brand":"Carrier","offers":[{"title":"OEM","offer_id":62641010639219,"sku":"CARRIE-PY1PJB048130AAAA-CONTROL_BOARD-LH33WP003","price":249.95,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62641010671987,"sku":"CARRIE-PY1PJB048130AAAA-CONTROL_BOARD-LH33WP003-GEN","price":219.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0984\/1190\/5395\/files\/nhvac-control-board-LH33WP003_fe3428d9-67df-43f2-9498-7270f9193e7a.jpg?v=1775027868","url":"https:\/\/nationalhvacparts.com\/products\/carrier-py1pjb048130aaaa-control-board-cyc67p","provider":"National HVAC Parts","version":"1.0","type":"link"}