{"product_id":"oem-goodman-150-f-primary-limit-switch-for-amh80904bxca-20162903","title":"OEM Goodman 150°F Primary Limit Switch for AMH80904BXCA — 20162903","description":"\u003cp\u003eThe Goodman \u003cstrong\u003e20162903 Primary Limit Switch\u003c\/strong\u003e is a genuine OEM high-limit safety control engineered for the \u003cstrong\u003eAMH80904BXCA\u003c\/strong\u003e 80% AFUE gas furnace and compatible Goodman\/Amana models. Mounted on the heat exchanger bulkhead, this normally-closed switch opens the gas valve and burner circuit if supply-air temperature exceeds its factory trip point, protecting the heat exchanger from overheating and preventing dangerous operation.\u003c\/p\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eTrip temperature: 150°F (auto-reset)\u003c\/li\u003e\n\u003cli\u003eFunction: Primary high-limit \/ temperature safety cutout\u003c\/li\u003e\n\u003cli\u003eConfiguration: Normally closed (opens on temperature rise)\u003c\/li\u003e\n\u003cli\u003eMount: Snap-disc, bracket mount\u003c\/li\u003e\n\u003cli\u003eFits: AMH80904BXCA and cross-compatible Goodman\/Amana furnaces\u003c\/li\u003e\n\u003cli\u003eOEM Part Number: 20162903\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eOEM vs. Generic\u003c\/h3\u003e\u003cp\u003eThe genuine OEM 20162903 is calibrated to the exact 150°F trip point your furnace's control sequence expects, ensuring correct cycling and code-compliant safety response. Aftermarket snap-discs may carry a nominal temperature rating but often differ in reset behavior, disc tolerance, and bracket geometry — leading to nuisance lockouts or delayed trips. For a safety-critical limit, OEM is the recommended choice.\u003c\/p\u003e\u003ch3\u003eInstallation Difficulty\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eEasy (1\/5).\u003c\/strong\u003e Two wire leads and one or two mounting screws. Always shut off power and gas at the furnace before servicing. Verify continuity with a multimeter and confirm the replacement matches the original temperature stamp. If your limit trips repeatedly, inspect airflow, filters, and blower operation — a tripping limit is usually a symptom, not the root cause.\u003c\/p\u003e","brand":"Goodman","offers":[{"title":"Default Title","offer_id":63057633575283,"sku":"GOODMAN-5815","price":8.95,"currency_code":"USD","in_stock":true}],"url":"https:\/\/nationalhvacparts.com\/products\/oem-goodman-150-f-primary-limit-switch-for-amh80904bxca-20162903","provider":"National HVAC Parts","version":"1.0","type":"link"}