{"product_id":"oem-goodman-120-f-auxiliary-limit-switch-for-amh81155cnaa-b1370155","title":"OEM Goodman 120°F Auxiliary Limit Switch for AMH81155CNAA — B1370155","description":"\u003cp\u003eThe Goodman \u003cstrong\u003eB1370155\u003c\/strong\u003e is a genuine OEM 120°F auxiliary limit switch for the Goodman\/Amana \u003cstrong\u003eAMH81155CNAA\u003c\/strong\u003e gas furnace and compatible models. This normally-closed thermal switch is typically mounted on the blower housing or near the evaporator\/blower deck and opens the control circuit if the temperature in that zone rises above safe limits — usually a sign of restricted airflow, a stuck blower, or a dirty filter.\u003c\/p\u003e\u003cp\u003eWhen an auxiliary limit opens, the furnace shuts down heating to prevent overheating of the blower compartment. A switch that has failed open will keep the furnace from running; one that nuisance-trips points to an underlying airflow problem that should be corrected.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eTrip temperature:\u003c\/strong\u003e 120°F (auxiliary\/blower-deck limit)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eType:\u003c\/strong\u003e normally-closed thermal limit switch\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFunction:\u003c\/strong\u003e overheat protection for the blower compartment\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFit:\u003c\/strong\u003e Goodman\/Amana AMH81155CNAA and compatible furnaces\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM part number:\u003c\/strong\u003e B1370155\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eOEM vs. Generic:\u003c\/strong\u003e The auxiliary limit's trip point and mounting must match the furnace's airflow design. Generic substitutes with the wrong temperature rating cause either premature shutdowns or reduced overheat protection. This genuine Goodman B1370155 carries the correct 120°F factory calibration and exact bracket fit.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eInstall difficulty:\u003c\/strong\u003e Easy to Moderate. Kill power at the disconnect, remove the two mounting screws and the spade terminals, install the replacement in the same orientation, and reconnect the leads. As with any safety limit, confirm proper blower airflow and a clean filter before restoring the furnace to service.\u003c\/p\u003e","brand":"Goodman","offers":[{"title":"Default Title","offer_id":63057642389875,"sku":"GOODMAN-6002","price":18.95,"currency_code":"USD","in_stock":true}],"url":"https:\/\/nationalhvacparts.com\/products\/oem-goodman-120-f-auxiliary-limit-switch-for-amh81155cnaa-b1370155","provider":"National HVAC Parts","version":"1.0","type":"link"}