{"title":"Pentair UltraTemp ETi Hybrid Heater Replacement Parts","description":"\u003cp\u003eInteractive exploded-view parts diagram for the Pentair UltraTemp ETi Hybrid Heater. Switch between the Refrigeration System, Gas System, Electrical System, Plumbing views, then click any numbered part to see the part number, price and stock, or call us and we will find it for you.\u003c\/p\u003e","products":[{"product_id":"pentair-heat-pump-heater-thermistor-probe-471566","title":"Pentair Thermistor Probe for 150-400 MiniMax and ThermaFlo Titanium Heat Pump 471566Z","description":"\u003cdiv\u003e\n  \u003ch2\u003ePentair 471566Z Thermistor Probe for MiniMax and ThermaFlo Titanium Heat Pump\u003c\/h2\u003e\n\n  \u003cp\u003eThe Pentair 471566Z Thermistor Probe is a genuine replacement temperature sensor used on compatible Pentair MiniMax® pool and spa heaters and ThermaFlo® Titanium heat pump applications. This probe helps the heater or heat pump monitor water temperature so the control system can regulate heating operation properly.\u003c\/p\u003e\n\n  \u003cp\u003eThis replacement thermistor probe is commonly used when the heater displays incorrect water temperature, has temperature-sensing issues, cycles improperly, or requires replacement of the original thermistor sensor during heater diagnostics.\u003c\/p\u003e\n\n  \u003ch3\u003eProduct Features\u003c\/h3\u003e\n  \u003cul\u003e\n    \u003cli\u003eGenuine Pentair replacement thermistor probe\u003c\/li\u003e\n    \u003cli\u003eManufacturer part number: 471566Z\u003c\/li\u003e\n    \u003cli\u003eAlso commonly referenced as 471566\u003c\/li\u003e\n    \u003cli\u003eUsed for water temperature sensing in compatible heater and heat pump systems\u003c\/li\u003e\n    \u003cli\u003eFits select MiniMax® 150, 200, 250, 300, 350, and 400 heater models where specified\u003c\/li\u003e\n    \u003cli\u003eCompatible with select MiniMax® NX STD, NT TSI, NT LN, and ThermaFlo® Titanium heat pump applications\u003c\/li\u003e\n    \u003cli\u003eCommon replacement during heater temperature-sensor troubleshooting\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003ch3\u003eProduct Details\u003c\/h3\u003e\n  \u003ctable\u003e\n    \u003ctbody\u003e\n      \u003ctr\u003e\n        \u003ctd\u003e\u003cstrong\u003eBrand\u003c\/strong\u003e\u003c\/td\u003e\n        \u003ctd\u003ePentair\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003e\u003cstrong\u003ePart Number\u003c\/strong\u003e\u003c\/td\u003e\n        \u003ctd\u003e471566Z\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003e\u003cstrong\u003eAlternate Reference\u003c\/strong\u003e\u003c\/td\u003e\n        \u003ctd\u003e471566\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003e\u003cstrong\u003eProduct Type\u003c\/strong\u003e\u003c\/td\u003e\n        \u003ctd\u003eThermistor Probe \/ Water Temperature Sensor\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003e\u003cstrong\u003eHeater Series\u003c\/strong\u003e\u003c\/td\u003e\n        \u003ctd\u003eMiniMax® and select ThermaFlo® Titanium applications\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003e\u003cstrong\u003eApplication\u003c\/strong\u003e\u003c\/td\u003e\n        \u003ctd\u003ePool and spa heater water temperature sensing\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003e\u003cstrong\u003eCommon Use\u003c\/strong\u003e\u003c\/td\u003e\n        \u003ctd\u003eReplacing a failed, damaged, or inaccurate thermistor probe\u003c\/td\u003e\n      \u003c\/tr\u003e\n    \u003c\/tbody\u003e\n  \u003c\/table\u003e\n\n  \u003ch3\u003eCompatibility\u003c\/h3\u003e\n  \u003cul\u003e\n    \u003cli\u003ePentair MiniMax® 150, 200, 250, 300, 350, and 400 heater models where part number 471566Z is specified\u003c\/li\u003e\n    \u003cli\u003ePentair MiniMax® NX STD heater applications requiring 471566Z\u003c\/li\u003e\n    \u003cli\u003ePentair MiniMax® NT TSI heater applications requiring 471566Z\u003c\/li\u003e\n    \u003cli\u003ePentair MiniMax® NT LN heater applications requiring 471566Z\u003c\/li\u003e\n    \u003cli\u003ePentair ThermaFlo® Titanium heat pump applications requiring 471566Z\u003c\/li\u003e\n    \u003cli\u003eReplacement applications where the existing probe is marked 471566, 471566Z, or matches the equipment parts diagram\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003ch3\u003eCommon Signs This Part May Need Replacement\u003c\/h3\u003e\n  \u003cul\u003e\n    \u003cli\u003eHeater displays an incorrect water temperature\u003c\/li\u003e\n    \u003cli\u003eHeater does not respond correctly to the temperature set point\u003c\/li\u003e\n    \u003cli\u003eHeater cycles on and off unexpectedly after other causes have been ruled out\u003c\/li\u003e\n    \u003cli\u003eTemperature reading jumps, drifts, or appears inconsistent\u003c\/li\u003e\n    \u003cli\u003eThermistor probe wiring, connector, or sensor body is damaged\u003c\/li\u003e\n    \u003cli\u003eHeater diagnostics indicate a water temperature sensor or thermistor issue\u003c\/li\u003e\n    \u003cli\u003eExisting sensor tests outside the expected resistance range during service\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003ch3\u003eImportant Notes\u003c\/h3\u003e\n  \u003cul\u003e\n    \u003cli\u003eThis item is the thermistor probe only.\u003c\/li\u003e\n    \u003cli\u003eControl board, keypad, high-limit switches, pressure switch, unions, headers, heat exchanger, wiring harness, and complete heater are sold separately unless otherwise stated.\u003c\/li\u003e\n    \u003cli\u003eVerify your exact heater model, BTU size, and parts diagram before ordering.\u003c\/li\u003e\n    \u003cli\u003eThis part is not universal for all Pentair heaters, MasterTemp® heaters, UltraTemp® heat pumps, or Sta-Rite heater models.\u003c\/li\u003e\n    \u003cli\u003eTemperature-control issues can also be caused by a bad control board, damaged wiring, poor water flow, high-limit faults, scale buildup, or heat exchanger problems.\u003c\/li\u003e\n    \u003cli\u003eReplacing the thermistor probe alone may not correct the issue if the heater control system, wiring, or water flow is faulty.\u003c\/li\u003e\n    \u003cli\u003ePool heater repairs should be performed by a qualified pool heater technician when electrical or gas components are involved.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003ch3\u003eInstallation Notes\u003c\/h3\u003e\n  \u003cul\u003e\n    \u003cli\u003eTurn off electrical power to the heater or heat pump before service.\u003c\/li\u003e\n    \u003cli\u003eAllow the equipment to cool completely before removing temperature-sensing components.\u003c\/li\u003e\n    \u003cli\u003eShut off the gas supply before working inside a gas heater cabinet.\u003c\/li\u003e\n    \u003cli\u003eRelieve system pressure and follow the equipment service manual before removing the old probe.\u003c\/li\u003e\n    \u003cli\u003eLabel or photograph wiring connections before disconnecting the existing sensor.\u003c\/li\u003e\n    \u003cli\u003eInspect the sensor port, connector, wiring, and surrounding heater components for corrosion or damage.\u003c\/li\u003e\n    \u003cli\u003eDo not overtighten the replacement probe.\u003c\/li\u003e\n    \u003cli\u003eAfter installation, restore power and confirm the displayed water temperature is reasonable before normal operation.\u003c\/li\u003e\n    \u003cli\u003eIf the same fault returns, continue diagnosis of wiring, control board, water flow, and related safety circuits.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003ch3\u003eRelated Products\u003c\/h3\u003e\n  \u003cul\u003e\n    \u003cli\u003e\u003ca href=\"https:\/\/aquapoolsupply.com\/products\/pentair-heat-pump-heater-thermistor-probe-471566\"\u003ePentair 471566Z Thermistor Probe for MiniMax and ThermaFlo Titanium Heat Pump\u003c\/a\u003e\u003c\/li\u003e\n    \u003cli\u003e\u003ca href=\"https:\/\/aquapoolsupply.com\/products\/pentairminimax115degreefhilimitthermostat471587pen471587\"\u003ePentair 471587 MiniMax 115°F Hi-Limit Thermostat\u003c\/a\u003e\u003c\/li\u003e\n    \u003cli\u003e\u003ca href=\"https:\/\/aquapoolsupply.com\/products\/pentairthermalfloultratemp2x2unionworing473381pen473381\"\u003ePentair 473381 ThermalFlo \/ UltraTemp 2\" x 2\" Union with O-Ring\u003c\/a\u003e\u003c\/li\u003e\n    \u003cli\u003e\u003ca href=\"https:\/\/aquapoolsupply.com\/products\/bulkhead-ring-adapter-nut-for-minimax-plus-200-400\"\u003ePentair 274440Z Bulkhead Ring Adapter Nut for MiniMax Plus 200-400\u003c\/a\u003e\u003c\/li\u003e\n    \u003cli\u003e\u003ca href=\"https:\/\/aquapoolsupply.com\/products\/pentairminimaxpilotgeneratorq313awclip71515pen071515\"\u003ePentair 071515 MiniMax Pilot Generator Q313A with Clip\u003c\/a\u003e\u003c\/li\u003e\n    \u003cli\u003e\u003ca href=\"https:\/\/aquapoolsupply.com\/products\/pentairminimaxheaterquickflangeiikitfor112threadedconnection471083pen471083\"\u003ePentair 471083 MiniMax Heater Quick Flange II Kit, 1-1\/2\" Threaded Connection\u003c\/a\u003e\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003ch3\u003eMaintenance Tips\u003c\/h3\u003e\n  \u003cul\u003e\n    \u003cli\u003eKeep heater water flow within the manufacturer’s recommended range.\u003c\/li\u003e\n    \u003cli\u003eMaintain proper pool water chemistry to help reduce scale buildup and corrosion.\u003c\/li\u003e\n    \u003cli\u003eInspect heater wiring and sensor connections during routine service.\u003c\/li\u003e\n    \u003cli\u003eDo not ignore repeated heater temperature faults or unusual temperature readings.\u003c\/li\u003e\n    \u003cli\u003eKeep the equipment pad dry and protected from water leaks that can damage electrical components.\u003c\/li\u003e\n    \u003cli\u003eHave recurring heater shutdowns or temperature-sensing issues diagnosed before replacing multiple parts.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\u003c\/div\u003e","brand":"Pentair","offers":[{"title":"Default Title","offer_id":50289964974396,"sku":"471566Z","price":43.94,"currency_code":"USD","in_stock":true}]},{"product_id":"pentairthermalfloultratemp2x2unionworing473381pen473381","title":"Pentair ThermalFlo\/UltraTemp 2\" x 2\" Union w\/ O-Ring | 473381","description":"\u003cdiv\u003e\n\u003ch1\u003ePentair 2'' PVC Union for MiniMax Plus, ThermaFlo and ThermaFlo Titanium Heat Pump 473381\u003c\/h1\u003e\n\u003cp\u003eEnsure a secure and durable connection in your pool heating system with the Pentair 2'' PVC Union, part number 473381. This union is specifically designed for use with Pentair's MiniMax® Plus, ThermaFlo®, and ThermaFlo® Titanium Heat Pump models, providing a reliable link between your heat pump and the plumbing system.\u003c\/p\u003e\n\u003cp\u003eMade from PVC, or Polyvinyl Chloride, this union offers excellent resistance to corrosion and chemical wear, making it ideal for pool and spa applications where chlorine and other chemicals are prevalent. The 2-inch size fits perfectly with corresponding PVC piping, facilitating a seamless and leak-free installation.\u003c\/p\u003e\n\u003ch2\u003eCompatibility:\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003ePentair MiniMax® Plus Heat Pumps\u003c\/li\u003e\n\u003cli\u003ePentair ThermaFlo® Heat Pumps\u003c\/li\u003e\n\u003cli\u003ePentair ThermaFlo® Titanium Heat Pumps\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eKey Features:\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e Made from high-quality PVC, known for its durability and chemical resistance.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDesign:\u003c\/strong\u003e Tailored to integrate seamlessly with specific Pentair heat pump models, ensuring a perfect fit and optimal performance.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFunction:\u003c\/strong\u003e Provides a robust, leak-proof connection that simplifies maintenance and installation processes.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThis PVC union is an essential component for anyone operating a Pentair heating system, offering straightforward installation and long-term reliability. It helps maintain the efficiency and effectiveness of your heat pump, ensuring your pool remains comfortably heated throughout the year.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cp\u003eSKU: 473381\u003c\/p\u003e\n\u003c!--split--\u003e","brand":"Pentair","offers":[{"title":"Default Title","offer_id":52589951484220,"sku":"473381","price":26.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0736\/3280\/9276\/files\/pentair-thermalfloultratemp-2-x-2-union-w-o-ring-473381-heater-parts-4329835.jpg?v=1771561343"},{"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":52589970096444,"sku":"475601Z","price":51.75,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0736\/3280\/9276\/files\/475601_4.jpg?v=1724707860"}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0736\/3280\/9276\/collections\/pentair-ultratemp-eti-hybrid-heater-refrigeration-system.png?v=1790358796","url":"https:\/\/aquapoolsupply.com\/collections\/parts-list-pentair-ultratemp-eti-hybrid-heater.oembed","provider":"Aqua Pool Supply","version":"1.0","type":"link"}