{"product_id":"oem-goodman-door-interlock-switch-w-wires-for-dms80704bna-b1370820","title":"OEM Goodman Door Interlock Switch w\/ Wires for DMS80704BNA — B1370820","description":"\u003ch2\u003eGoodman B1370820 Blower Door Interlock Switch (with Wires)\u003c\/h2\u003e\u003cp\u003eThe B1370820 is a genuine OEM Goodman blower-compartment door interlock switch, supplied pre-wired with factory lead harness for the \u003cstrong\u003eDMS80704BNA\u003c\/strong\u003e gas furnace and compatible Goodman\/Amana models. This SPST safety switch cuts power to the furnace whenever the blower access door is removed, protecting technicians and preventing operation with the compartment open. A furnace that is completely dead — no display, no blower, no ignition — is often the result of a failed or stuck door switch.\u003c\/p\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eType: SPST normally-open door interlock (plunger actuated)\u003c\/li\u003e\n\u003cli\u003eSupplied with: Factory wire leads \/ harness\u003c\/li\u003e\n\u003cli\u003eFunction: De-energizes furnace when blower door is off\u003c\/li\u003e\n\u003cli\u003eMount: Blower compartment, factory bracket fit\u003c\/li\u003e\n\u003cli\u003eFits: Goodman DMS80704BNA and compatible furnaces\u003c\/li\u003e\n\u003cli\u003ePart number: B1370820\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eOEM vs. Generic\u003c\/h3\u003e\u003cp\u003eThe genuine OEM assembly arrives with the correct plunger length, connector, and pre-terminated wiring, so it drops in without splicing or guesswork. Generic switches frequently require re-terminating leads and can misalign with the door, leading to intermittent no-heat faults. OEM guarantees correct actuation depth and safe operation.\u003c\/p\u003e\u003ch3\u003eInstallation Difficulty\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eEasy–Moderate (2\/5).\u003c\/strong\u003e Typically 15–25 minutes: disconnect power, note wire routing, unclip the old switch, transfer or plug in the harness, and secure. Confirm the plunger seats against the door when closed. Shut off power at the breaker before servicing.\u003c\/p\u003e","brand":"Goodman","offers":[{"title":"Default Title","offer_id":63058036359539,"sku":"GOODMAN-9591","price":40.95,"currency_code":"USD","in_stock":true}],"url":"https:\/\/nationalhvacparts.com\/products\/oem-goodman-door-interlock-switch-w-wires-for-dms80704bna-b1370820","provider":"National HVAC Parts","version":"1.0","type":"link"}