{"product_id":"carrier-pg8haa048075aaja-control-board-1wvedz","title":"OEM Carrier Fan Timer Control Board 20054502 — PG8HAA048075AAJA","description":"\u003ch1\u003eOEM Carrier Fan Timer Control Board 20054502 for Model PG8HAA048075AAJA\u003c\/h1\u003e\u003cp\u003eThis OEM fan timer control board (part# \u003cstrong\u003e20054502\u003c\/strong\u003e) is the factory-specified replacement for the \u003cstrong\u003eCarrier PG8HAA048075AAJA\u003c\/strong\u003e gas furnace. Manufactured by Honeywell for Carrier, this board governs all critical sequencing functions — including inducer pre-purge, hot surface ignition timing, gas valve activation, blower on\/off delays, and fault code diagnostics. When the board fails, common symptoms include the furnace locking out after ignition attempts, the blower running continuously or not at all, incorrect fan-on\/fan-off timing, or a complete loss of heating function with no status LED activity.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePart Number:\u003c\/strong\u003e 20054502 | Replaces: 20054501, ST9120C2010 | Manufactured by Honeywell for Carrier\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM vs Generic:\u003c\/strong\u003e This is a genuine OEM board built to exact factory tolerances. Aftermarket boards may lack precise timing calibration, increasing the risk of nuisance lockouts, premature component wear, and voided equipment warranties.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall Difficulty: 3\/5\u003c\/strong\u003e — Requires disconnecting 24V control wiring, line-voltage blower leads, and multiple harness connectors. Always photograph all wiring before removal. Tools needed: flathead and Phillips screwdrivers, needle-nose pliers, multimeter. Recommended for experienced DIYers or qualified HVAC technicians.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWarranty:\u003c\/strong\u003e 1-year OEM factory warranty. In-stock and ships same business day from our warehouse.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eCompatibility:\u003c\/strong\u003e Designed as a direct OEM replacement for the \u003cstrong\u003eCarrier PG8HAA048075AAJA\u003c\/strong\u003e gas furnace (4-ton, 75,000 BTU, single-stage). Verify your unit's existing part number against the data plate before ordering. Not sure it fits? Our HVAC parts specialists confirm fitment before you buy — order with confidence today.\u003c\/p\u003e","brand":"Carrier","offers":[{"title":"OEM","offer_id":62643226542451,"sku":"CARRIE-PG8HAA048075AAJA-CONTROL_BOARD-20054502","price":145.95,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62643226575219,"sku":"CARRIE-PG8HAA048075AAJA-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_7bc6c6c7-08bd-4c98-8b5e-cab9bc2216b9.jpg?v=1775029234","url":"https:\/\/nationalhvacparts.com\/products\/carrier-pg8haa048075aaja-control-board-1wvedz","provider":"National HVAC Parts","version":"1.0","type":"link"}