{"product_id":"oem-goodman-primary-limit-temperature-control-for-amh950453bxad-20162904","title":"OEM Goodman Primary Limit Temperature Control for AMH950453BXAD — 20162904","description":"\u003cp\u003eThe \u003cstrong\u003eGoodman 20162904 Primary Limit Temperature Control\u003c\/strong\u003e is a genuine OEM high-limit safety device that governs supply-air temperature in the \u003cstrong\u003eAMH950453BXAD\u003c\/strong\u003e gas furnace. Mounted at the heat-exchanger outlet, this primary limit continuously monitors plenum temperature and de-energizes the gas valve if airflow is restricted or the blower fails, preventing dangerous overheating of the heat exchanger. It is one of the most important safety controls in the furnace and a common failure point in no-heat and short-cycling calls.\u003c\/p\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eType: Primary limit temperature control (auto-reset)\u003c\/li\u003e\n\u003cli\u003eConfiguration: Normally closed, opens on high supply-air temperature\u003c\/li\u003e\n\u003cli\u003eMounting: Plenum \/ heat-exchanger outlet plate\u003c\/li\u003e\n\u003cli\u003eCompatible model: AMH950453BXAD (Goodman\/Amana furnace)\u003c\/li\u003e\n\u003cli\u003eEquipment: Gas furnace\u003c\/li\u003e\n\u003cli\u003eOEM part number: 20162904\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eOEM vs. Generic\u003c\/h3\u003e\u003cp\u003eThe \u003cstrong\u003eOEM 20162904\u003c\/strong\u003e arrives pre-calibrated to the furnace's exact trip temperature and probe length — critical for a primary limit, where an incorrect setpoint can cause nuisance lockouts or unsafe operation. A \u003cstrong\u003eGeneric limit\u003c\/strong\u003e may not match the probe insertion depth or trip point, so OEM is strongly recommended for this safety-critical control.\u003c\/p\u003e\u003ch3\u003eInstallation Difficulty\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eModerate (2\/5)\u003c\/strong\u003e — Requires power disconnect, removal of two mounting screws, transferring the wiring, and confirming the probe seats correctly in the airstream. Recommended for HVAC professionals.\u003c\/p\u003e","brand":"Goodman","offers":[{"title":"Default Title","offer_id":63057658282355,"sku":"GOODMAN-6254","price":35.95,"currency_code":"USD","in_stock":true}],"url":"https:\/\/nationalhvacparts.com\/products\/oem-goodman-primary-limit-temperature-control-for-amh950453bxad-20162904","provider":"National HVAC Parts","version":"1.0","type":"link"}