{"product_id":"oem-goodman-manual-reset-limit-switch-for-gch90904cxab-10123519","title":"OEM Goodman Manual Reset Limit Switch for GCH90904CXAB — 10123519","description":"\u003cp\u003eThe Goodman \u003cstrong\u003e10123519 Manual Reset Limit Switch\u003c\/strong\u003e is a genuine OEM safety control for \u003cstrong\u003eGCH90904CXAB\u003c\/strong\u003e gas furnaces. This thermal switch monitors heat exchanger and burner temperatures and opens the circuit to shut down the furnace if it overheats or experiences flame rollout. Unlike an auto-reset limit, this manual-reset design stays open until the red button is physically pressed, forcing an inspection before the furnace can restart — a deliberate safety feature that flags airflow or combustion problems.\u003c\/p\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eOEM Part Number: 10123519\u003c\/li\u003e\n\u003cli\u003ePart Type: Manual reset high-limit \/ rollout safety switch\u003c\/li\u003e\n\u003cli\u003eBrand: Goodman\u003c\/li\u003e\n\u003cli\u003eEquipment: Gas furnace\u003c\/li\u003e\n\u003cli\u003eCompatible Model: GCH90904CXAB\u003c\/li\u003e\n\u003cli\u003eReset Type: Manual (push-button)\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eOEM vs. Generic\u003c\/h3\u003e\u003cp\u003eThe \u003cstrong\u003egenuine 10123519\u003c\/strong\u003e is calibrated to the exact trip temperature and bracket footprint your furnace's safety circuit requires. A generic switch with the wrong setpoint can trip too early (nuisance no-heat) or too late (unsafe overheating). Because this is a life-safety component, always use the factory-specified OEM limit switch — never bypass or jump it out.\u003c\/p\u003e\u003ch3\u003eInstallation Difficulty\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eEasy (2\/5).\u003c\/strong\u003e About a 15-minute job. Turn off power and gas, note wire positions, remove the mounting screws, transfer the two spade terminals to the new switch, and reinstall. After replacing, diagnose why the original tripped — restricted airflow, a dirty filter, or a cracked heat exchanger — before returning the furnace to service.\u003c\/p\u003e\u003cp\u003e\u003cem\u003eSafety note: If this switch keeps tripping, stop and have a qualified technician inspect the furnace. Confirm your model is GCH90904CXAB. Email info@nationalhvacparts.com for fitment help.\u003c\/em\u003e\u003c\/p\u003e","brand":"Goodman","offers":[{"title":"Default Title","offer_id":63058054578547,"sku":"GOODMAN-9739","price":10.95,"currency_code":"USD","in_stock":true}],"url":"https:\/\/nationalhvacparts.com\/products\/oem-goodman-manual-reset-limit-switch-for-gch90904cxab-10123519","provider":"National HVAC Parts","version":"1.0","type":"link"}