{"product_id":"520840-suburban-rv-furnace-fan-control-wiring-kit-nt12-20","title":"520840 Suburban RV furnace FAN CONTROL WIRING KIT, NT12-20","description":"\u003ch1\u003e520840 Suburban RV furnace FAN CONTROL WIRING KIT, NT12-20\u003c\/h1\u003e\n\u003ch2\u003e\u003cspan style=\"background-color: rgb(255, 255, 0);\"\u003eNormal stock Item \u003c\/span\u003e\u003c\/h2\u003e\n\u003cp\u003e\u003cspan\u003eThe \u003cstrong\u003e520840 Suburban RV Furnace Fan Control Wiring Kit (NT12–20 Series)\u003c\/strong\u003e is the OEM wiring harness and control‑interface kit used on Suburban’s \u003cstrong\u003eNT12, NT16, and NT20\u003c\/strong\u003e furnaces. It provides the correct factory wiring layout, connectors, and control logic needed for proper blower operation, ignition sequencing, and thermostat communication in the smaller NT‑series furnaces. This kit is essential when replacing an older NT12–20 furnace, repairing heat‑damaged wiring, or correcting miswired systems that cause blower‑only operation or failed ignition.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eIt restores OEM‑correct connections between the \u003cstrong\u003ethermostat, limit switch, sail switch, time‑delay relay, and ignition board\u003c\/strong\u003e, ensuring the furnace runs through its heat cycle safely and reliably. Technicians rely on this kit to bring compact NT‑series furnaces back to proper operation without guesswork.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3\u003eWhat the 520840 Kit Supports\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cspan\u003eOEM wiring harness for \u003cstrong\u003eSuburban NT12, NT16, and NT20\u003c\/strong\u003e furnaces\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cspan\u003eEnsures correct \u003cstrong\u003eblower start‑up and shutdown timing\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cspan\u003eProvides proper connections for \u003cstrong\u003elimit switch, sail switch, ignition board, and relay\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cspan\u003ePrevents miswiring that causes \u003cstrong\u003eno‑heat\u003c\/strong\u003e, \u003cstrong\u003eblower‑only\u003c\/strong\u003e, or \u003cstrong\u003eshort‑cycling\u003c\/strong\u003e issues\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cspan\u003eDesigned specifically for NT12–20 models (not universal)\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cspan\u003eIdeal for furnace replacements, rebuilds, or restoring damaged wiring\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Laurelhurst","offers":[{"title":"Default Title","offer_id":43051383193666,"sku":"S520840","price":24.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1071\/8320\/files\/OIP_20_aabe2e95-bf1c-4003-8543-b7ff9e7ea471.webp?v=1772586917","url":"https:\/\/hvacpartstore.com\/products\/520840-suburban-rv-furnace-fan-control-wiring-kit-nt12-20","provider":"HVACpartstore","version":"1.0","type":"link"}