{"product_id":"reznor-147165-flame-sensor","title":"Reznor 147165 Flame Sensor","description":"\u003cp\u003eThe \u003cstrong\u003eReznor 147165 Flame Sensor\u003c\/strong\u003e is a critical OEM replacement component engineered for precise \u003cstrong\u003eflame rectification\u003c\/strong\u003e within the burner assembly. Designed specifically for \u003cstrong\u003eReznor FT30-300\u003c\/strong\u003e models and compatible with \u003cstrong\u003eUDAP\u003c\/strong\u003e and \u003cstrong\u003eUDAS\u003c\/strong\u003e series unit heaters, this 3-5\/8 inch sensor ensures the control board receives a steady \u003cstrong\u003eDC microamp signal\u003c\/strong\u003e during the ignition cycle. In commercial and industrial HVACR applications, a fouled or oxidized sensor is the primary cause of intermittent 3-second shutdowns. This \u003cstrong\u003egenuine Reznor part\u003c\/strong\u003e features a high-grade porcelain insulator to prevent voltage leakage and a durable stainless steel rod optimized for high-temperature environments. Swapping a worn sensor for a new 147165 helps prevent \u003cstrong\u003egas valve lockout\u003c\/strong\u003e and ensures reliable combustion performance throughout the heating season. Maintaining proper grounding on the mounting surface is essential for the sensor to accurately complete the feedback loop to the furnace control system.\u003c\/p\u003e\n\n\u003cstrong\u003eKey Benefits\u003c\/strong\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDirect OEM Replacement:\u003c\/strong\u003e Guaranteed fit for \u003cstrong\u003eReznor FT30-300\u003c\/strong\u003e, \u003cstrong\u003eUDAP\u003c\/strong\u003e, and \u003cstrong\u003eUDAS\u003c\/strong\u003e series gas-fired heaters.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePrecise Flame Detection:\u003c\/strong\u003e Minimizes nuisance \u003cstrong\u003elockout codes\u003c\/strong\u003e and prevents unburned fuel accumulation.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eRugged Construction:\u003c\/strong\u003e Industrial-grade \u003cstrong\u003eflame rod\u003c\/strong\u003e and porcelain insulator designed for continuous thermal stress.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eEnhanced Safety:\u003c\/strong\u003e Immediately signals the \u003cstrong\u003eignition control board\u003c\/strong\u003e to shut down gas flow if flame signal is lost.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eProfessional Grade:\u003c\/strong\u003e Specifically designed for \u003cstrong\u003ecommercial HVAC maintenance\u003c\/strong\u003e and rapid field replacement.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cstrong\u003eCommon Questions\u003c\/strong\u003e\n\u003cp\u003e\u003cstrong\u003eWhat are the symptoms of a failing Reznor 147165?\u003c\/strong\u003e\u003cbr\u003e\nThe most common indicator is the \"short cycling\" effect where the burner ignites for several seconds and then shuts down. This typically repeats for three attempts before the control board enters a hard lockout. Professionals should check for a \u003cstrong\u003eDC microamp reading\u003c\/strong\u003e between 2.0 and 6.0 µA using a multimeter in series.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eCan I clean this sensor instead of replacing it?\u003c\/strong\u003e\u003cbr\u003e\nWhile light oxidation can sometimes be removed with a dollar bill or very fine emery cloth, heavy carbon buildup or silica coating from airborne contaminants often necessitates a full replacement. If the porcelain insulator is cracked, the sensor must be replaced immediately to prevent electrical shorts to the burner ground.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eDoes this fit older Reznor unit heaters?\u003c\/strong\u003e\u003cbr\u003e\nThis sensor is a standard component for many \u003cstrong\u003eNortek Global HVAC\u003c\/strong\u003e products. Always verify the part number against your specific unit's wiring diagram or data plate, as different series may require varying rod lengths or terminal connector sizes.\u003c\/p\u003e\n\n\u003cp\u003eDisclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.\u003c\/p\u003e","brand":"Reznor","offers":[{"title":"Default Title","offer_id":35644763084,"sku":"147165","price":69.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1838\/2375\/files\/Image_b7761e15-8a22-48b5-9760-6a4554cdc65e.png?v=1790806218","url":"https:\/\/www.gsistore.com\/en-ca\/products\/reznor-147165-flame-sensor","provider":"GSIstore","version":"1.0","type":"link"}