{"product_id":"oem-goodman-150-f-primary-limit-switch-for-ams80805cxab-20162903","title":"OEM Goodman 150°F Primary Limit Switch for AMS80805CXAB — 20162903","description":"\u003cp\u003eThe Goodman \u003cstrong\u003e20162903\u003c\/strong\u003e is a genuine OEM primary limit switch with a \u003cstrong\u003e150°F\u003c\/strong\u003e set point for \u003cstrong\u003eAMS80805CXAB\u003c\/strong\u003e gas furnaces. Mounted on the heat-exchanger\/blower bulkhead, this auto-reset control opens the gas\/ignition circuit if supply-air temperature climbs past its rating — the furnace's front-line protection against overheating from restricted airflow. When temperatures fall back into range, it recloses automatically. A failed primary limit is a common cause of short-cycling or a furnace that won't fire.\u003c\/p\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eType: Primary limit switch (auto reset)\u003c\/li\u003e\n\u003cli\u003eSet point: 150°F (opens on rise)\u003c\/li\u003e\n\u003cli\u003eAction: SPST, normally closed\u003c\/li\u003e\n\u003cli\u003eTerminals: 1\/4 in. quick-connect (typical)\u003c\/li\u003e\n\u003cli\u003eFits: Goodman\/Amana AMS80805CXAB and related 80% furnaces\u003c\/li\u003e\n\u003cli\u003eOEM Part #: 20162903\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eOEM vs. Generic\u003c\/h3\u003e\u003cp\u003eThe trip temperature and mounting geometry are calibrated to this furnace. Generic limits at a different set point can nuisance-trip on normal operation or allow the exchanger to overheat. For a primary safety control, OEM is strongly recommended.\u003c\/p\u003e\u003ch3\u003eInstallation\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eDifficulty: Easy.\u003c\/strong\u003e Shut off power and gas, unplug the spade terminals, remove the two mounting screws, and install the replacement in the same position and orientation. Usually 10–20 minutes. If the switch had been tripping, correct the airflow restriction (clogged filter, closed dampers, weak blower) before returning to service.\u003c\/p\u003e\u003cp\u003eConfirm your model number before ordering. Backed by our fast-ship guarantee.\u003c\/p\u003e","brand":"Goodman","offers":[{"title":"Default Title","offer_id":63057703600499,"sku":"GOODMAN-7003","price":19.95,"currency_code":"USD","in_stock":true}],"url":"https:\/\/nationalhvacparts.com\/products\/oem-goodman-150-f-primary-limit-switch-for-ams80805cxab-20162903","provider":"National HVAC Parts","version":"1.0","type":"link"}