{"product_id":"oem-goodman-170-f-primary-limit-switch-for-gmv80704bxa-b1370188","title":"OEM Goodman 170°F Primary Limit Switch for GMV80704BXA — B1370188","description":"\u003cp\u003eThe Goodman \u003cstrong\u003eB1370188\u003c\/strong\u003e is a genuine OEM 170°F primary high-limit switch for the \u003cstrong\u003eGMV80704BXA\u003c\/strong\u003e furnace and compatible Goodman\/Amana models. Mounted on the heat exchanger or blower deck, this auto-reset control opens the circuit to the gas valve if supply-air temperature exceeds a safe threshold — protecting the furnace from overheating due to restricted airflow, a dirty filter, or a failing blower. Short-cycling on heat is a classic sign of a marginal or failed primary limit.\u003c\/p\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eTrip temperature: 170°F (open on rise)\u003c\/li\u003e\n\u003cli\u003eType: Auto-reset primary high-limit switch\u003c\/li\u003e\n\u003cli\u003eFunction: Supply-air overheat protection\u003c\/li\u003e\n\u003cli\u003eFits: Goodman GMV80704BXA furnace\u003c\/li\u003e\n\u003cli\u003eOEM Part Number: B1370188\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eOEM vs. Generic\u003c\/h3\u003e\u003cp\u003eThe \u003cstrong\u003eOEM B1370188\u003c\/strong\u003e matches Goodman's exact 170°F setpoint, disc size, and bracket geometry. Because this control governs furnace safety and cycling, an incorrectly rated generic can cause nuisance shutdowns or allow unsafe temperatures. OEM is strongly recommended.\u003c\/p\u003e\u003ch3\u003eInstallation Difficulty\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eEasy\u003c\/strong\u003e — Two mounting screws and two spade terminals. Plan 15 minutes. Cut power before servicing and verify airflow (filter, blower, ducting) is not the underlying cause.\u003c\/p\u003e","brand":"Goodman","offers":[{"title":"Default Title","offer_id":63058168643955,"sku":"GOODMAN-12622","price":12.95,"currency_code":"USD","in_stock":true}],"url":"https:\/\/nationalhvacparts.com\/products\/oem-goodman-170-f-primary-limit-switch-for-gmv80704bxa-b1370188","provider":"National HVAC Parts","version":"1.0","type":"link"}