{"product_id":"carrier-pg8haa036050aaja-control-board-1wvedz","title":"OEM Carrier Fan Timer Control Board 24V for PG8HAA036050AAJA","description":"\u003ch1\u003eOEM Carrier Fan Timer Control Board 20054502 for Model PG8HAA036050AAJA\u003c\/h1\u003e\u003cp\u003eThis is the factory OEM Fan Timer Control Board (part #20054502) for the \u003cstrong\u003eCarrier PG8HAA036050AAJA\u003c\/strong\u003e gas furnace. Manufactured by Honeywell for Carrier, this board — also cross-referenced as the \u003cstrong\u003eHoneywell ST9120C2010\u003c\/strong\u003e — is the brain of the furnace's fan and ignition sequencing circuit. It controls blower on\/off timing, hot surface ignition sequencing, inducer operation, and safety lockout logic. When this board fails, symptoms typically include the furnace powering on but failing to fire, the blower running continuously or not at all, fault codes flashing on the LED indicator, or the system going into hard lockout after ignition attempts.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM Part Number:\u003c\/strong\u003e 20054502 | Replaces: 20054501, ST9120C2010 | Manufacturer: Honeywell for Carrier | Voltage: 24V AC control circuit | Board Type: Fan Timer \/ Integrated Furnace Control (IFC)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM vs Generic:\u003c\/strong\u003e This is a genuine OEM board programmed with Carrier-specific fan timing delays and safety lockout sequences. Aftermarket boards may use generic timing tables that cause nuisance lockouts, shortened heat exchanger life, or voided unit warranties — OEM is always the recommended choice.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall Difficulty: 3\/5\u003c\/strong\u003e — Shut off power and gas before starting. Photograph all wiring harness connections before disconnecting. Transfer all connector plugs one-to-one to the new board. Tools needed: flat-head and Phillips screwdrivers, needle-nose pliers, phone camera. Allow 5 minutes after power-off before handling board to allow capacitors to discharge.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWarranty:\u003c\/strong\u003e 1-year OEM factory warranty against manufacturing defects. 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 Engineered as the direct OEM replacement for \u003cstrong\u003eCarrier model PG8HAA036050AAJA\u003c\/strong\u003e gas furnaces. Also fits a wide range of Carrier, Bryant, and Payne furnace models using the ST9120C2010 board platform — verify your existing board part number against 20054502 or ST9120C2010 before ordering. Not sure? Our HVAC parts specialists confirm fitment before you buy — reach out via chat or phone. \u003cstrong\u003eOrder now and get same-day shipping on all in-stock units.\u003c\/strong\u003e\u003c\/p\u003e","brand":"Carrier","offers":[{"title":"OEM","offer_id":62643226837363,"sku":"CARRIE-PG8HAA036050AAJA-CONTROL_BOARD-20054502","price":145.95,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62643226870131,"sku":"CARRIE-PG8HAA036050AAJA-CONTROL_BOARD-20054502-GEN","price":128.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0984\/1190\/5395\/files\/nhvac-control-board-20054502_1c8a580b-7a23-457b-bde8-b417bb2cedc5.jpg?v=1775029239","url":"https:\/\/nationalhvacparts.com\/products\/carrier-pg8haa036050aaja-control-board-1wvedz","provider":"National HVAC Parts","version":"1.0","type":"link"}