{"product_id":"nordyne-903429a-control-board","title":"Nordyne 903429A Control Board","description":"\u003cdiv class=\"qMYqUG_convSearchResultHighlightRoot\"\u003e\n\u003cdiv class=\"\"\u003e\n\u003csection class=\"text-token-text-primary w-full focus:outline-none has-data-writing-block:pointer-events-none [\u0026amp;:has([data-writing-block])\u0026gt;*]:pointer-events-auto R6Vx5W_threadScrollVars scroll-mb-[calc(var(--scroll-root-safe-area-inset-bottom,0px)+var(--thread-response-height))] scroll-mt-[calc(var(--header-height)+min(200px,max(70px,20svh)))]\" dir=\"auto\"\u003e\n\u003cdiv class=\"text-base my-auto mx-auto pb-8 [--thread-content-margin:var(--thread-content-margin-xs,calc(var(--spacing)*4))] @w-sm\/main:[--thread-content-margin:var(--thread-content-margin-sm,calc(var(--spacing)*6))] @w-lg\/main:[--thread-content-margin:var(--thread-content-margin-lg,calc(var(--spacing)*16))] px-(--thread-content-margin)\"\u003e\n\u003cdiv class=\"[--thread-content-max-width:40rem] @w-lg\/main:[--thread-content-max-width:48rem] mx-auto max-w-(--thread-content-max-width) flex-1 group\/turn-messages focus-visible:outline-hidden min-h-8 relative flex w-full min-w-0 flex-col agent-turn\"\u003e\n\u003cdiv class=\"flex max-w-full flex-col gap-4 [\u0026amp;\u0026gt;div:has([data-free-thinking-preview-answer=true])+:is(.text-message,.relative:has(\u0026gt;.text-message))]:-mt-2 grow\"\u003e\n\u003cdiv dir=\"auto\" class=\"min-h-8 text-message relative flex w-full flex-col items-end gap-2 text-start break-words whitespace-normal outline-none keyboard-focused:focus-ring [.text-message+\u0026amp;]:mt-1\" tabindex=\"0\"\u003e\n\u003cdiv class=\"flex w-full flex-col gap-1 empty:hidden\"\u003e\n\u003cdiv class=\"streaming-animation LR5Y_W_content markdown prose dark:prose-invert wrap-break-word w-full light markdown-new-styling\"\u003e\n\u003cp dir=\"auto\"\u003eThe \u003cstrong\u003eNordyne 903429A Control Board\u003c\/strong\u003e is an OEM furnace control designed for compatible Nordyne M-Series furnace applications. This \u003cstrong\u003efurnace control board\u003c\/strong\u003e regulates power and operating signals to key furnace components, making it an important replacement when diagnosing control-related heating, blower, or ignition problems.\u003c\/p\u003e\n\u003cp dir=\"auto\"\u003ePart 903429A is used with Nordyne M-Series equipment and is commonly specified for M1 Series furnaces, with additional M-Series applications depending on the equipment model. The \u003cstrong\u003eNordyne furnace control board\u003c\/strong\u003e replaces legacy part numbers \u003cstrong\u003e903429, 624602, and 624640\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp dir=\"auto\"\u003eFor contractors replacing an existing board, verify the furnace model, serial number, wiring connections, and original control-board number before ordering. This \u003cstrong\u003eOEM HVAC control board\u003c\/strong\u003e is intended to restore proper furnace control functions when the existing board has been confirmed defective. Always match the replacement against the unit data and existing board rather than relying on appearance alone.\u003c\/p\u003e\n\u003ch3 dir=\"auto\"\u003eKey Benefits\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eOEM Nordyne control board for compatible M-Series furnace applications\u003c\/li\u003e\n\u003cli\u003eDirect replacement for Nordyne \u003cstrong\u003e903429\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eAlso replaces legacy part numbers \u003cstrong\u003e624602 and 624640\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eControls power and operating signals to furnace components\u003c\/li\u003e\n\u003cli\u003eSuitable for professional furnace repair and control-board replacement\u003c\/li\u003e\n\u003cli\u003eDesigned for M-Series equipment; verify exact furnace model and serial number before installation\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3 dir=\"auto\"\u003eCommon Questions\u003c\/h3\u003e\n\u003cp dir=\"auto\"\u003e\u003cstrong\u003eWhat does the Nordyne 903429A control board fit?\u003c\/strong\u003e\u003cbr\u003eThe 903429A is used with compatible Nordyne M-Series furnaces, including M1 Series applications. Compatibility can vary by furnace model, so confirm the model, serial number, and existing board number before ordering.\u003c\/p\u003e\n\u003cp dir=\"auto\"\u003e\u003cstrong\u003eWhat part numbers does the 903429A replace?\u003c\/strong\u003e\u003cbr\u003eThe 903429A is a replacement for Nordyne 903429 and is also cross-referenced as replacing 624602 and 624640.\u003c\/p\u003e\n\u003cp dir=\"auto\"\u003e\u003cstrong\u003eCan a bad furnace control board cause blower or heating problems?\u003c\/strong\u003e\u003cbr\u003eYes. A failed control board can affect power and control signals to furnace components and may contribute to improper blower operation, failure to start, heating problems, or abnormal cycling. Other furnace components should be diagnosed before replacing the board.\u003c\/p\u003e\n\u003cp dir=\"auto\"\u003e\u003cstrong\u003eHow do I confirm that 903429A is correct for my furnace?\u003c\/strong\u003e\u003cbr\u003eCheck the furnace model and serial number along with the part number printed on the existing control board. Do not select a replacement based only on physical appearance.\u003c\/p\u003e\n\u003cp dir=\"auto\"\u003e\u003cstrong\u003eDisclaimer:\u003c\/strong\u003e While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/section\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cp\u003e\u003cspan\u003e903429A is the cross for 903429\u003c\/span\u003e\u003c\/p\u003e\n\u003ch2\u003e\n\u003cspan style=\"color: red;\"\u003eThis item is not eligible for free shipping.\u003c\/span\u003e\u003cspan style=\"font-size: 10.0pt; font-family: 'Arial',sans-serif; color: red; background: white;\"\u003e\u003c\/span\u003e\n\u003c\/h2\u003e","brand":"Nordyne","offers":[{"title":"Default Title","offer_id":35648533900,"sku":"903429A","price":178.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1838\/2375\/files\/Image_0d95eee4-5eb6-4691-aac5-f4986cf6226f.png?v=1790202012","url":"https:\/\/www.gsistore.com\/en-ca\/products\/nordyne-903429a-control-board","provider":"GSIstore","version":"1.0","type":"link"}