{"product_id":"carrier-hh680351-limit-switch","title":"Carrier HH680351 Limit Switch","description":"\u003cdiv\u003e\n\u003cp\u003eThe Carrier HH680351 is a genuine Carrier replacement limit switch, designated L220-20F. A limit switch is a temperature-operated safety control: it monitors the temperature at the heat exchanger or supply air and opens the circuit to the burner or heating elements if that temperature rises above its set point, then closes again once the equipment cools. A limit that trips repeatedly usually points to restricted airflow, such as a dirty filter or a failing blower, so correct the cause before replacing the switch.\u003c\/p\u003e\n\u003cp\u003eMatch the L220-20F designation and the mounting style of the original switch when ordering.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Metropac","offers":[{"title":"Default Title","offer_id":49214139728094,"sku":"392181","price":39.9,"currency_code":"USD","in_stock":true}],"url":"https:\/\/newenglandsupplyhouse.com\/products\/carrier-hh680351-limit-switch","provider":"New England Supply House","version":"1.0","type":"link"}