{"product_id":"oem-goodman-blower-door-safety-switch-with-wires-for-gmpn040-3-b1370820","title":"OEM Goodman Blower Door Safety Switch with Wires for GMPN040-3 — B1370820","description":"\u003cp\u003eThe \u003cstrong\u003eGoodman B1370820 Door Switch with Wires\u003c\/strong\u003e is a genuine OEM blower-compartment interlock for \u003cstrong\u003eGMPN040-3\u003c\/strong\u003e gas furnaces. This safety switch cuts power to the furnace whenever the blower access panel is removed, preventing operation with the door open. It arrives with factory-terminated wire leads for a direct, plug-and-play replacement. A furnace that is completely dead with no display is very often a stuck, broken, or disconnected door switch.\u003c\/p\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM Part Number:\u003c\/strong\u003e B1370820\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eType:\u003c\/strong\u003e Blower door interlock safety switch\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eConfiguration:\u003c\/strong\u003e Pre-wired with lead harness\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFunction:\u003c\/strong\u003e Opens circuit when access panel is removed\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFits:\u003c\/strong\u003e Goodman GMPN040-3 gas furnace\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e Goodman \/ Amana (Daikin)\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eOEM vs. Generic\u003c\/h3\u003e\u003cp\u003eThe OEM assembly includes the correct plunger geometry and pre-terminated harness so it seats against the door and mates to the furnace connector without splicing. Generic push-button switches often require cutting and crimping and may not align with the panel, defeating the safety function. For a wired interlock, OEM is the cleanest install.\u003c\/p\u003e\u003ch3\u003eInstallation Difficulty\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eEasy–Moderate (2.5\/5).\u003c\/strong\u003e Remove power, unclip the old switch and unplug the harness, then mount the new unit and reconnect. No splicing needed on the pre-wired version. Confirm the plunger fully depresses when the door is installed.\u003c\/p\u003e","brand":"Goodman","offers":[{"title":"Default Title","offer_id":63058141610355,"sku":"GOODMAN-B1370820","price":40.95,"currency_code":"USD","in_stock":true}],"url":"https:\/\/nationalhvacparts.com\/products\/oem-goodman-blower-door-safety-switch-with-wires-for-gmpn040-3-b1370820","provider":"National HVAC Parts","version":"1.0","type":"link"}