{"product_id":"oem-goodman-auxiliary-limit-switch-light-blue-for-wfd18115s5cxcb-0130f00038","title":"OEM Goodman Auxiliary Limit Switch (Light Blue) for WFD18115S5CXCB — 0130F00038","description":"\u003ch2\u003eGoodman 0130F00038 Auxiliary Limit Switch (Light Blue)\u003c\/h2\u003e\u003cp\u003eThe \u003cstrong\u003eGoodman 0130F00038\u003c\/strong\u003e is the color-coded \u003cstrong\u003elight-blue auxiliary limit switch\u003c\/strong\u003e for the \u003cstrong\u003eWFD18115S5CXCB\u003c\/strong\u003e furnace and compatible models. As a secondary thermal safety, it backs up the primary limit — opening the control circuit and shutting off the gas valve if temperatures climb beyond a safe range in its monitored zone. The light-blue code identifies its specific factory trip temperature so it isn't confused with the primary (pink) limit.\u003c\/p\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003ePart Number: 0130F00038\u003c\/li\u003e\n\u003cli\u003eCategory: Limit Switch — auxiliary \/ secondary high limit\u003c\/li\u003e\n\u003cli\u003eColor Code: Light Blue (denotes factory-set trip temperature)\u003c\/li\u003e\n\u003cli\u003eOperation: Normally closed, opens on overtemperature\u003c\/li\u003e\n\u003cli\u003eFits: Goodman WFD18115S5CXCB and compatible furnaces\u003c\/li\u003e\n\u003cli\u003eType: OEM factory replacement\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eOEM vs. Generic\u003c\/h3\u003e\u003cp\u003eAuxiliary limits are safety devices set to an exact temperature — the \u003cstrong\u003elight-blue color code\u003c\/strong\u003e exists precisely so the correct switch goes back in. The \u003cstrong\u003eOEM Goodman\u003c\/strong\u003e part ships with the right set point and mounting geometry. Substituting an unmatched generic switch risks either nuisance shutdowns or a compromised safety chain. Always match the OEM part number, not just the color.\u003c\/p\u003e\u003ch3\u003eInstallation Difficulty\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eEasy.\u003c\/strong\u003e Mounts with two screws and two spade connectors. De-energize the furnace, transfer wiring one lead at a time, and reinstall. Roughly a 10-minute job.\u003c\/p\u003e","brand":"Goodman","offers":[{"title":"Default Title","offer_id":63058217238899,"sku":"GOODMAN-13888","price":5.95,"currency_code":"USD","in_stock":true}],"url":"https:\/\/nationalhvacparts.com\/products\/oem-goodman-auxiliary-limit-switch-light-blue-for-wfd18115s5cxcb-0130f00038","provider":"National HVAC Parts","version":"1.0","type":"link"}