{"product_id":"oem-goodman-150-f-primary-limit-switch-for-ameh800805dxab-20162903","title":"OEM Goodman 150°F Primary Limit Switch for AMEH800805DXAB — 20162903","description":"\u003cp\u003eThe Goodman \u003cstrong\u003e20162903 Primary Limit Switch\u003c\/strong\u003e is a 150°F factory-original high-limit safety control for the Amana\/Goodman \u003cstrong\u003eAMEH800805DXAB\u003c\/strong\u003e gas furnace. This normally-closed switch monitors heat-exchanger and plenum temperature and opens the gas\/burner circuit if the furnace overheats — typically from restricted airflow, a dirty filter, or blower failure — protecting the heat exchanger from cracking.\u003c\/p\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eType: Primary high-limit switch, normally closed\u003c\/li\u003e\n\u003cli\u003eTrip point: 150°F (opens on rise)\u003c\/li\u003e\n\u003cli\u003eReset: Automatic\u003c\/li\u003e\n\u003cli\u003eFit: AMEH800805DXAB and 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\u003eOEM ensures the exact temperature calibration, terminal orientation, and mounting bracket this furnace requires. Generic limit switches with a different trip point or footprint can trip early, fail to protect the heat exchanger, or not seat correctly against the panel. Because this is a safety device, correct calibration matters.\u003c\/p\u003e\u003ch3\u003eInstallation Difficulty\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eEasy — 1 of 5.\u003c\/strong\u003e Cut power at the disconnect, unplug the two spade terminals, remove the mounting screws, and install the replacement in the same orientation. No tools beyond a nut driver are needed. Verify furnace cycling after replacement.\u003c\/p\u003e","brand":"Goodman","offers":[{"title":"Default Title","offer_id":63057586618739,"sku":"GOODMAN-4496","price":14.95,"currency_code":"USD","in_stock":true}],"url":"https:\/\/nationalhvacparts.com\/products\/oem-goodman-150-f-primary-limit-switch-for-ameh800805dxab-20162903","provider":"National HVAC Parts","version":"1.0","type":"link"}