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The Goodman B1370820 Blower Door Interlock Switch is a genuine OEM safety cutoff that de-energizes the furnace whenever the blower access panel is removed. It comes with pre-attached wire leads for a plug-and-play replacement on the Amana AMV81155CXA and other compatible Goodman/Amana furnaces. When the door is off, the switch opens the 24V/line circuit so the unit cannot run with an open cabinet — protecting both the equipment and the technician.
The OEM B1370820 arrives with the correct lead length, terminal style, and plunger travel for a true drop-in fit. Generic door switches frequently require splicing or re-terminating and may have a different actuation depth, leading to intermittent operation. The OEM assembly saves time and avoids wiring guesswork.
Easy (2/5). Disconnect power, unplug the two leads, remove the mounting screw(s), and reverse for the new switch. Verify the plunger fully depresses when the door is reinstalled. Typical install time is 10–15 minutes.