{"product_id":"r40403-003-furnace-blower-control-circuit-board-st9120c","title":"R40403-003 Furnace Blower Control Circuit Board ST9120C","description":"\u003cp\u003eR40403-003 Furnace Blower Control Circuit Board directly replaces older models and works with ST9120C controls for Armstrong Allied and other brands reliably.\u003c\/p\u003e\u003cp\u003eThis board is designed for easy installation with no wiring modifications, making replacements quick and straightforward for compatible furnaces. It supports standard 24V control circuits and is intended for plug and play integration in updated or existing systems.\u003c\/p\u003e\u003cp\u003eIt is compatible with ST9120A, ST9120B and ST9120C controls and works with Armstrong Allied and other major brands, providing broad applicability across many furnace models. For best results, consider photographing your current wiring before disconnecting to simplify reinstallation.\u003c\/p\u003e\u003cp\u003eConstructed with high-quality PCB materials and precision welding for stable operation, the board resists moisture and corrosion to support long-term reliability. A 5-amp fuse protects the 24V circuit and a dip switch enables adjustable blower delay settings.\u003c\/p\u003e\n\u003ch3\u003eFeatures:\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eDirect replacement for R40403-001 R40403-002 R40403-003 and 20054502 with ST9120A\/B\/C compatibility and major-brand support\u003c\/li\u003e\n\u003cli\u003eUpgraded design with improved power components to reduce overheating and extend lifespan\u003c\/li\u003e\n\u003cli\u003e5-amp fuse for the 24V circuit and a dip switch for adjustable blower delay settings\u003c\/li\u003e\n\u003cli\u003eOperating Line Voltage 85–135 VAC and Secondary 18–30 VAC with max blower load 15FLA\/30LRA @120VAC\u003c\/li\u003e\n\u003cli\u003eEasy plug and play installation with no wiring modifications required, suggest taking a photo of current wiring\u003c\/li\u003e\n\u003cli\u003eMoisture and corrosion resistant PCB materials for reliable long-term operation\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003c!-- \n  SEO KEYWORDS START\n  R40403-003 furnace blower board\n  ST9120C compatible control board\n  Armstrong Allied furnace board replacement\n  furnace blower control circuit board replacement\n  SEO KEYWORDS END\n--\u003e","brand":"ROBOA","offers":[{"title":"Default Title","offer_id":68022265413886,"sku":"QjBDWTdZWkhWSA==","price":92.99,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0784\/3803\/9806\/files\/r40403-003-furnace-blower-board-01.jpg?v=1794311366","url":"https:\/\/canadianmarkt.com\/products\/r40403-003-furnace-blower-control-circuit-board-st9120c","provider":"CanadianMarkt","version":"1.0","type":"link"}