{"product_id":"pentairstackfluesensoreti400pen475601z","title":"Pentair ETI400 Stack Flue Sensor Replacement Kit | 475601","description":"\u003cdiv\u003e\n\u003ch1\u003ePentair ETI400 Stack Flue Sensor Replacement Kit | 475601\u003c\/h1\u003e\n\u003cp\u003eThe \u003cstrong\u003ePentair ETI400 Stack Flue Sensor Replacement Kit (475601)\u003c\/strong\u003e is a genuine replacement sensor assembly designed for the \u003cstrong\u003ePentair ETI400 Series Condensing Gas Heater\u003c\/strong\u003e. The stack flue sensor monitors exhaust temperature and combustion conditions, helping the heater’s control system maintain safe, efficient operation and protect internal components.\u003c\/p\u003e\n\u003ch2\u003eWhat This Part Is For\u003c\/h2\u003e\n\u003cp\u003eThis replacement sensor is specifically made for the \u003cstrong\u003ePentair ETI400 Condensing Gas Heater\u003c\/strong\u003e. Replace it when the original flue sensor fails, reads out of range, or triggers error codes—issues that can lead to inefficient combustion, shutdowns, or false safety trips.\u003c\/p\u003e\n\u003ch2\u003eFeatures \u0026amp; Benefits\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eOEM replacement stack flue temperature sensor for ETI400 heaters\u003c\/li\u003e\n\u003cli\u003eHelps maintain efficient and safe combustion performance\u003c\/li\u003e\n\u003cli\u003ePrevents false shutdowns or error conditions due to bad sensor readings\u003c\/li\u003e\n\u003cli\u003eDurable design for long-term service in heater environments\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eInstallation Notes\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eTurn off power and gas supply before servicing\u003c\/li\u003e\n\u003cli\u003eRemove the old sensor and install the replacement in the same position\u003c\/li\u003e\n\u003cli\u003eEnsure connectors and wiring are secure to prevent poor readings\u003c\/li\u003e\n\u003cli\u003eTest heater operation after replacement to confirm proper function\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eMaintenance Tips\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eInspect the sensor wiring and connector during routine service\u003c\/li\u003e\n\u003cli\u003eClean surrounding flue areas if soot or buildup is present\u003c\/li\u003e\n\u003cli\u003eReplace at the first sign of erratic temperature readings or service codes\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eRelated Products\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003ca href=\"\/products\/pentair-eti400-condensing-gas-heater\"\u003e Pentair ETI400 Condensing Gas Heater \u003c\/a\u003e – The main heater model that this sensor kit supports.\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"\/products\/pentair-eti400-service-kit\"\u003e Pentair ETI400 Service Kit \u003c\/a\u003e – General maintenance kit with common service parts for the ETI400 heater.\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"\/products\/pentair-eti400-condensate-neutralizer-replacement-kit\"\u003e Pentair ETI400 Condensate Neutralizer Replacement Kit \u003c\/a\u003e – Kit to neutralize acidic condensate and protect drain lines.\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"\/products\/pentair-eti400-indoor-direct-air-intake-kit\"\u003e Pentair ETI400 Indoor Direct Air Intake Kit \u003c\/a\u003e – Accessory kit for indoor installations requiring dedicated airflow.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e","brand":"Pentair","offers":[{"title":"Default Title","offer_id":46797848477871,"sku":"PEN475601Z","price":51.75,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0734\/6415\/2239\/files\/475601_4.jpg?v=1777068193","url":"https:\/\/freshized.com\/products\/pentairstackfluesensoreti400pen475601z","provider":"Freshized","version":"1.0","type":"link"}