{"product_id":"oem-goodman-manual-reset-limit-switch-for-gch90905dxab-10123518","title":"OEM Goodman Manual Reset Limit Switch for GCH90905DXAB — 10123518","description":"\u003ch2\u003eGoodman 10123518 Manual Reset Limit Switch\u003c\/h2\u003e\u003cp\u003eThe Goodman 10123518 is a factory OEM manual-reset high-limit switch for the \u003cstrong\u003eGCH90905DXAB\u003c\/strong\u003e gas furnace and compatible Goodman\/Amana models. This safety control opens the burner circuit if the heat exchanger area exceeds its rated temperature, protecting against overheating from restricted airflow or blower failure. Unlike auto-reset limits, the manual-reset design requires a physical button press to restore operation — a deliberate safeguard that flags a genuine fault for inspection.\u003c\/p\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eOEM Part Number: 10123518\u003c\/li\u003e\n\u003cli\u003eFits: Goodman GCH90905DXAB and compatible furnaces\u003c\/li\u003e\n\u003cli\u003eType: Manual reset high-limit thermal cutout\u003c\/li\u003e\n\u003cli\u003eAction: Normally closed, opens on overtemp\u003c\/li\u003e\n\u003cli\u003eBrand: Goodman (OEM)\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eOEM vs. Generic\u003c\/h3\u003e\u003cp\u003eThe \u003cstrong\u003egenuine Goodman OEM\u003c\/strong\u003e switch carries the exact trip temperature and mounting flange specified for this furnace. Because this is a safety-critical component, using a generic switch with a mismatched trip point can allow dangerous overheating or cause nuisance trips. For safety controls, always install OEM.\u003c\/p\u003e\u003ch3\u003eInstallation Difficulty\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eModerate (2\/5)\u003c\/strong\u003e — Shut off power and gas, remove the mounting screws, transfer the wiring, and confirm the trip rating matches. About 20 minutes. Diagnose the root cause of any trip before returning the furnace to service.\u003c\/p\u003e","brand":"Goodman","offers":[{"title":"Default Title","offer_id":63058055004531,"sku":"GOODMAN-9753","price":9.95,"currency_code":"USD","in_stock":true}],"url":"https:\/\/nationalhvacparts.com\/products\/oem-goodman-manual-reset-limit-switch-for-gch90905dxab-10123518","provider":"National HVAC Parts","version":"1.0","type":"link"}