{"product_id":"carrier-dhmshaq30xa301-control-board-1um9gh","title":"OEM Carrier Main Control Board 17122000A20391 for DHMSHAQ30XA301","description":"\u003ch1\u003eOEM Carrier Main Control Board 17122000A20391 for Model DHMSHAQ30XA301\u003c\/h1\u003e\u003cp\u003eThis is the factory OEM main control board (part number \u003cstrong\u003e17122000A20391\u003c\/strong\u003e) for the \u003cstrong\u003eCarrier DHMSHAQ30XA301\u003c\/strong\u003e system. The main control board is the central brain of your HVAC unit — it orchestrates every operational sequence including thermostat signal interpretation, blower and compressor staging, safety circuit monitoring, and fault code diagnostics. When the control board fails, symptoms can range from a completely unresponsive system to intermittent lockouts, incorrect staging, or error codes that cannot be cleared. Replacing the board with a genuine OEM unit ensures all logic, timing, and safety thresholds match factory specifications exactly.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecs:\u003c\/strong\u003e OEM part number 17122000A20391 | Factory-programmed logic | 24V control circuit compatible | Direct drop-in replacement with matching terminal layout for Carrier DHMSHAQ30XA301\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM vs Generic:\u003c\/strong\u003e Generic control boards frequently use off-spec firmware and lower-grade components that can misinterpret thermostat signals or fail safety lockout sequences. This OEM board is factory-tested and guaranteed to match original performance and longevity.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall difficulty: 3\/5\u003c\/strong\u003e — Disconnect power at the breaker and verify zero voltage before handling. Tools needed: flathead and Phillips screwdrivers, needle-nose pliers, phone or camera to document all wiring connections prior to removal. Transfer wiring harnesses one at a time to avoid miswiring. Some boards require a firmware initialization sequence on first power-up — consult the service manual.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWarranty:\u003c\/strong\u003e 1-year OEM factory warranty against defects in materials and workmanship. Ships same business day from our climate-controlled warehouse in anti-static packaging.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eCompatibility:\u003c\/strong\u003e Designed specifically for the Carrier \u003cstrong\u003eDHMSHAQ30XA301\u003c\/strong\u003e. Verify your existing board's part number against \u003cstrong\u003e17122000A20391\u003c\/strong\u003e before ordering. If you're unsure of fitment, our HVAC parts specialists can confirm compatibility before your order ships — contact us today and get back up and running fast.\u003c\/p\u003e","brand":"Carrier","offers":[{"title":"OEM","offer_id":62909576905075,"sku":"CARRIE-DHMSHAQ30XA301-CONTROL_BOARD-17122000A20391","price":156.0,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62909576937843,"sku":"CARRIE-DHMSHAQ30XA301-CONTROL_BOARD-17122000A20391-GEN","price":90.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0984\/1190\/5395\/files\/nhvac-control-board-furnace-17122000A20391.jpg?v=1782928781","url":"https:\/\/nationalhvacparts.com\/products\/carrier-dhmshaq30xa301-control-board-1um9gh","provider":"National HVAC Parts","version":"1.0","type":"link"}