{"product_id":"carrier-py1rpa048074aawa-control-board-cyc67p","title":"OEM Carrier DSI Control Board LH33WP003 for PY1RPA048074AAWA","description":"\u003ch1\u003eOEM Carrier Direct Spark Ignition (DSI) Control Board LH33WP003 for Model PY1RPA048074AAWA\u003c\/h1\u003e\u003cp\u003eThis is the genuine OEM Carrier Direct Spark Ignition (DSI) control board, part number \u003cstrong\u003eLH33WP003\u003c\/strong\u003e, factory-specified for the \u003cstrong\u003eCarrier PY1RPA048074AAWA\u003c\/strong\u003e packaged rooftop unit. As the central intelligence of the heating system, this microprocessor-based board manages spark ignition sequencing, gas valve activation, combustion blower control, indoor fan motor operation, flame sensing, and safety lockout logic. When this board fails, typical symptoms include a complete no-heat condition, repeated ignition lockout faults, short-cycling, or the unit failing to advance past the trial-for-ignition stage. Fault codes displayed via onboard LED indicators will help pinpoint the failure during diagnosis.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePart Type:\u003c\/strong\u003e Direct Spark Ignition (DSI) Integrated Control Board | OEM Part # \u003cstrong\u003eLH33WP003\u003c\/strong\u003e | Also supersedes LH33WP003A\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM vs Generic:\u003c\/strong\u003e This is the factory Carrier OEM board — engineered to exact timing, flame-sensing thresholds, and safety lockout specifications for the PY1RPA048074AAWA. Aftermarket substitutes may exhibit mis-timed ignition trials, nuisance lockouts, or incompatible blower delay profiles that shorten system life.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall Difficulty: 3\/5\u003c\/strong\u003e — Requires disconnecting 120V line power and 24V control wiring. Tools needed: flat-head and Phillips screwdrivers, needle-nose pliers, multimeter. Photograph all harness connections before removal. Verify all safety interlocks are reconnected before restoring power. Recommended for qualified HVAC technicians.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWarranty:\u003c\/strong\u003e 1-year OEM factory warranty. In stock — ships same business day from our warehouse.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eCompatibility:\u003c\/strong\u003e Designed for the Carrier \u003cstrong\u003ePY1RPA048074AAWA\u003c\/strong\u003e packaged rooftop gas\/electric unit. Verify your unit's data plate and existing board part number before ordering. Cross-references include LH33WP003A. Have a question about fitment? Our HVAC parts specialists confirm compatibility before you buy — contact us today and get your system back online fast.\u003c\/p\u003e","brand":"Carrier","offers":[{"title":"OEM","offer_id":62640663527795,"sku":"CARRIE-PY1RPA048074AAWA-CONTROL_BOARD-LH33WP003","price":450.95,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62640663560563,"sku":"CARRIE-PY1RPA048074AAWA-CONTROL_BOARD-LH33WP003-GEN","price":396.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0984\/1190\/5395\/files\/nhvac-control-board-LH33WP003_d0a0ecc3-1750-4e0b-aaaa-1ff4215ea3a1.jpg?v=1775027978","url":"https:\/\/nationalhvacparts.com\/products\/carrier-py1rpa048074aawa-control-board-cyc67p","provider":"National HVAC Parts","version":"1.0","type":"link"}