{"product_id":"oem-goodman-120f-auxiliary-limit-switch-for-dds80904bxa-b1370155","title":"OEM Goodman 120F Auxiliary Limit Switch for DDS80904BXA — B1370155","description":"\u003cp\u003eThe Goodman \u003cstrong\u003eB1370155 Auxiliary Limit Switch\u003c\/strong\u003e is a genuine OEM safety component designed for the \u003cstrong\u003eDDS80904BXA\u003c\/strong\u003e gas furnace and compatible Goodman\/Amana models. This normally-closed thermal switch monitors secondary heat-exchanger and rollout temperatures, opening the control circuit to shut down the burners if it senses an unsafe over-temperature condition. A failed or nuisance-tripping auxiliary limit is a leading cause of a furnace that lights briefly and then locks out on a flame or limit fault.\u003c\/p\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eCutoff temperature:\u003c\/strong\u003e 120°F (auto-reset)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFunction:\u003c\/strong\u003e Auxiliary \/ rollout over-temperature safety limit\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eContact type:\u003c\/strong\u003e Normally closed (opens on rise)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFits model:\u003c\/strong\u003e Goodman DDS80904BXA and select 80% AFUE furnaces\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM part number:\u003c\/strong\u003e B1370155\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eOEM vs. Generic\u003c\/h3\u003e\u003cp\u003eOur \u003cstrong\u003eOEM Goodman\u003c\/strong\u003e switch is calibrated to the exact factory trip point and mounting footprint, ensuring correct safety response and a plug-in fit with no rewiring. Universal generic limits often carry looser temperature tolerances and require terminal adaptation — acceptable in a pinch, but the OEM part is the safe, no-guesswork choice for a safety device.\u003c\/p\u003e\u003ch3\u003eInstallation Difficulty\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eEasy (1\/5)\u003c\/strong\u003e — Typically a single-screw mount with two push-on spade terminals. Always shut off gas and power at the disconnect before servicing. Most homeowners with basic tools can replace this in under 15 minutes.\u003c\/p\u003e","brand":"Goodman","offers":[{"title":"Default Title","offer_id":63058012537203,"sku":"GOODMAN-9450","price":11.96,"currency_code":"USD","in_stock":true}],"url":"https:\/\/nationalhvacparts.com\/products\/oem-goodman-120f-auxiliary-limit-switch-for-dds80904bxa-b1370155","provider":"National HVAC Parts","version":"1.0","type":"link"}