{"product_id":"oem-goodman-170-f-primary-limit-switch-for-amh80704bxaa-b1370188","title":"OEM Goodman 170°F Primary Limit Switch for AMH80704BXAA — B1370188","description":"\u003cp\u003eThe \u003cstrong\u003eGoodman B1370188 Primary Limit Switch\u003c\/strong\u003e is a genuine OEM 170°F auto-reset high-limit designed for the \u003cstrong\u003eAMH80704BXAA\u003c\/strong\u003e gas furnace and compatible Goodman\/Amana models. Mounted on the heat-exchanger bulkhead, it is the main overheat protection: if supply-air temperature climbs past the set point due to low airflow, a dirty filter, or a stalled blower, it opens the control circuit to shut off the burners and prevent heat-exchanger cracking. A furnace that fires briefly then shuts down often points to a tripping or failed primary limit.\u003c\/p\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eTrip temperature:\u003c\/strong\u003e 170°F (opens on rise)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eReset:\u003c\/strong\u003e Automatic (closes on cool-down)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFunction:\u003c\/strong\u003e Primary high-limit safety\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM part number:\u003c\/strong\u003e B1370188\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFits:\u003c\/strong\u003e Goodman\/Amana AMH80704BXAA and select furnace models\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eOEM vs. Generic\u003c\/h3\u003e\u003cp\u003eThe \u003cstrong\u003eOEM B1370188\u003c\/strong\u003e is factory-set to the exact 170°F trip point and disc length Goodman specifies for this heat exchanger. A \u003cstrong\u003egeneric\u003c\/strong\u003e switch with a different set point or insertion depth can cause nuisance short-cycling or fail to protect the exchanger. For this safety-critical part, OEM is the right call.\u003c\/p\u003e\u003ch3\u003eInstallation Difficulty\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eEasy\u003c\/strong\u003e — two mounting screws and spade terminals. Note the wiring, install in the same position, and reconnect. Achievable by an experienced homeowner. Always shut off power and gas, and resolve any airflow problem that caused the limit to trip.\u003c\/p\u003e","brand":"Goodman","offers":[{"title":"Default Title","offer_id":63057613685107,"sku":"GOODMAN-5384","price":12.95,"currency_code":"USD","in_stock":true}],"url":"https:\/\/nationalhvacparts.com\/products\/oem-goodman-170-f-primary-limit-switch-for-amh80704bxaa-b1370188","provider":"National HVAC Parts","version":"1.0","type":"link"}