{"product_id":"oem-lennox-flame-sensor-kit-y5353-dkvlt-150-200","title":"OEM Lennox Flame Sensor Kit — Y5353 (DKVLT-150\/200)","description":"\u003cp\u003eThe genuine OEM Lennox \u003cstrong\u003eY5353\u003c\/strong\u003e flame sensor kit is engineered for wall-mounted DKVLT-150 and DKVLT-200 condensing gas boilers. As a flame-rectification device, it verifies that the burner has established a stable flame and continuously reports that signal to the boiler control, which keeps the gas valve energized only while a valid flame is detected. If the flame is lost, the sensor forces an immediate safe shutdown.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eCommon failure symptoms:\u003c\/strong\u003e ignition followed by a rapid lockout, flame-loss or flame-failure error codes, multiple failed ignition attempts, or a boiler that cycles on and off without reaching temperature. Oxidation, soot buildup, or a hairline crack in the sensor rod weakens the flame signal and produces these faults.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhy OEM matters:\u003c\/strong\u003e the larger DKVLT-150\/200 burners require a sensor with the exact rod geometry and insulator rating this model provides. The OEM \u003cstrong\u003eY5353\u003c\/strong\u003e restores the correct flame-current range so your Lennox boiler ignites dependably and satisfies its built-in flame-safety logic — protection generic parts can compromise.\u003c\/p\u003e","brand":"Lennox","offers":[{"title":"Default Title","offer_id":63081078456691,"sku":"LNX-Y5353","price":19.95,"currency_code":"USD","in_stock":true}],"url":"https:\/\/nationalhvacparts.com\/products\/oem-lennox-flame-sensor-kit-y5353-dkvlt-150-200","provider":"National HVAC Parts","version":"1.0","type":"link"}