{"product_id":"oem-goodman-150-f-primary-limit-switch-for-dms81155cna-b1370198","title":"OEM Goodman 150°F Primary Limit Switch for DMS81155CNA — B1370198","description":"\u003ch2\u003eGoodman B1370198 150°F Primary Limit Switch\u003c\/h2\u003e\u003cp\u003eThe genuine Goodman B1370198 is a \u003cstrong\u003e150°F primary high-limit switch\u003c\/strong\u003e for the \u003cstrong\u003eDMS81155CNA\u003c\/strong\u003e and compatible Goodman\/Amana furnaces. Mounted on the heat-exchanger\/supply-plenum wall, this auto-reset switch is the furnace's main overheat safeguard. If supply-air temperature climbs past the rated limit — from a failing blower, dirty filter, or blocked ductwork — it opens the 24V circuit to shut off the burners and protect the heat exchanger from thermal damage.\u003c\/p\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eOEM Part Number: B1370198\u003c\/li\u003e\n\u003cli\u003eTrip Temperature: 150°F\u003c\/li\u003e\n\u003cli\u003eReset Type: Automatic\u003c\/li\u003e\n\u003cli\u003eCircuit: 24V normally-closed\u003c\/li\u003e\n\u003cli\u003eFunction: Primary high-limit overheat protection\u003c\/li\u003e\n\u003cli\u003eFits: Goodman DMS81155CNA and compatible furnaces\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eOEM vs. Generic\u003c\/h3\u003e\u003cp\u003eAs the primary safety limit, this switch must trip at exactly its rated temperature. The genuine Goodman part guarantees factory calibration; generic replacements risk off-spec trip points that either short-cycle the furnace or fail to protect the heat exchanger. OEM is strongly recommended.\u003c\/p\u003e\u003ch3\u003eInstall Difficulty\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eEasy to Moderate\u003c\/strong\u003e — Turn off power, transfer the wiring, and mount the new switch flush to the plenum in the original position. Always correct the underlying airflow problem before resetting, since repeated limit trips point to a restriction or blower fault.\u003c\/p\u003e","brand":"Goodman","offers":[{"title":"Default Title","offer_id":63058050679155,"sku":"GOODMAN-9624","price":26.95,"currency_code":"USD","in_stock":true}],"url":"https:\/\/nationalhvacparts.com\/products\/oem-goodman-150-f-primary-limit-switch-for-dms81155cna-b1370198","provider":"National HVAC Parts","version":"1.0","type":"link"}