{"product_id":"oem-goodman-primary-limit-switch-purple-for-gdh80403anaa-0130f00035","title":"OEM Goodman Primary Limit Switch (Purple) for GDH80403ANAA — 0130F00035","description":"\u003ch2\u003eGoodman 0130F00035 Primary Limit Switch (Purple)\u003c\/h2\u003e\u003cp\u003eThe Goodman \u003cstrong\u003e0130F00035\u003c\/strong\u003e is a genuine OEM primary high-limit switch — identified by its purple housing — engineered for the \u003cstrong\u003eGDH80403ANAA\u003c\/strong\u003e gas furnace. Mounted on the heat exchanger \/ supply plenum, this auto-reset control monitors supply-air temperature and cuts power to the gas valve if the furnace overheats, typically due to restricted airflow from a dirty filter, blocked ducts, or a failing blower. It is a critical safety device that protects the heat exchanger from cracking.\u003c\/p\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eType: Primary high-limit switch (auto-reset)\u003c\/li\u003e\n\u003cli\u003eHousing color: Purple (model-specific trip setpoint)\u003c\/li\u003e\n\u003cli\u003eFits: Goodman GDH80403ANAA 80% gas furnace\u003c\/li\u003e\n\u003cli\u003eFunction: Overheat \/ high-limit safety cutout\u003c\/li\u003e\n\u003cli\u003eBrand: Goodman OEM\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eOEM vs. Generic\u003c\/h3\u003e\u003cp\u003eThe color-coded \u003cstrong\u003eOEM 0130F00035\u003c\/strong\u003e is factory-calibrated to your furnace's exact trip temperature — the purple coding matters, as substituting a different setpoint compromises safety. Generic limits with the wrong calibration cause nuisance trips or fail to protect the heat exchanger. For this safety-critical part, use genuine OEM.\u003c\/p\u003e\u003ch3\u003eInstallation Difficulty\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eEasy (1\/5).\u003c\/strong\u003e Disconnect two wires, remove two screws, and mount the replacement in the same orientation. If the limit keeps tripping, replace your air filter and have airflow checked before assuming the switch is bad. Always shut off power before servicing.\u003c\/p\u003e","brand":"Goodman","offers":[{"title":"Default Title","offer_id":63058069848435,"sku":"GOODMAN-10154","price":32.95,"currency_code":"USD","in_stock":true}],"url":"https:\/\/nationalhvacparts.com\/products\/oem-goodman-primary-limit-switch-purple-for-gdh80403anaa-0130f00035","provider":"National HVAC Parts","version":"1.0","type":"link"}