{"product_id":"pentair-stack-flue-sensor-42002-0024s","title":"Pentair Stack Flue Sensor 42002-0024S – for MasterTemp \u0026 Max-E-Therm Heaters","description":"\u003cdiv class=\"ups-product-desc\" style=\"max-width: 100%; color: #1f2937; line-height: 1.7;\"\u003e\n\u003c!-- HERO --\u003e\n\u003cdiv style=\"background: linear-gradient(135deg,#0f4c81 0%,#1273b8 100%); color: #fff; border-radius: 18px; padding: 24px 20px; margin: 0 0 24px;\"\u003e\n\u003cdiv style=\"font-size: 13px; text-transform: uppercase; opacity: .9; margin-bottom: 8px;\"\u003ePool Heater Sensors \u0026amp; Safety Components\u003c\/div\u003e\n\u003ch2 style=\"margin: 0 0 10px; font-size: 30px; color: #fff;\"\u003ePentair Stack Flue Sensor\u003c\/h2\u003e\n\u003cp style=\"margin: 0; font-size: 16px; color: #fff;\"\u003eGenuine Pentair replacement stack flue temperature sensor for compatible MasterTemp and Sta-Rite Max-E-Therm pool heaters. Designed to monitor heater exhaust temperature as part of the heater's safety control system.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c!-- WARRANTY --\u003e\n\u003cdiv style=\"background: #f8fafc; border: 1px solid #e2e8f0; border-radius: 14px; padding: 16px; margin-bottom: 28px;\"\u003e\n\u003ch3 style=\"margin: 0 0 8px; font-size: 22px; color: #1e3a8a;\"\u003eWarranty Information\u003c\/h3\u003e\n\u003cp style=\"margin: 0; font-size: 16px;\"\u003e\u003cstrong\u003e1-Year Manufacturer Warranty\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp style=\"margin: 6px 0 0; font-size: 14px; color: #475569;\"\u003eUltimate Pools is your first point of contact for compatibility verification, installation guidance, and warranty support.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c!-- INTRO --\u003e\n\u003cdiv style=\"margin-bottom: 28px;\"\u003e\n\u003cp\u003eThe \u003cstrong\u003ePentair Stack Flue Sensor (42002-0024S)\u003c\/strong\u003e is a genuine replacement temperature sensor designed for compatible Pentair MasterTemp and Sta-Rite Max-E-Therm pool and spa heaters. The sensor monitors stack flue temperature and provides temperature information to the heater's electronic control system as part of its safety monitoring functions.\u003c\/p\u003e\n\u003cp\u003eDesigned for use with specified natural gas and propane heater models, the 42002-0024S is a replacement component for servicing a faulty or damaged stack flue sensor. Correct sensor operation is important to the heater's temperature monitoring and protective shutdown functions. Professional diagnosis is recommended before replacement to confirm that the sensor is the cause of the reported heater fault.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c!-- FEATURES --\u003e\n\u003cdiv style=\"margin-bottom: 32px;\"\u003e\n\u003ch3 style=\"font-size: 26px; margin: 0 0 18px; color: #0f172a;\"\u003eKey Features\u003c\/h3\u003e\n\u003cdiv style=\"display: grid; grid-template-columns: repeat(auto-fit,minmax(240px,1fr)); gap: 12px;\"\u003e\n\u003cdiv style=\"background: #f8fafc; border: 1px solid #dbeafe; border-radius: 14px; padding: 16px;\"\u003e\n\u003cstrong\u003eGenuine Pentair Replacement Sensor\u003c\/strong\u003e\u003cbr\u003eOriginal Pentair replacement component for specified MasterTemp and Sta-Rite Max-E-Therm heaters.\u003c\/div\u003e\n\u003cdiv style=\"background: #f8fafc; border: 1px solid #dbeafe; border-radius: 14px; padding: 16px;\"\u003e\n\u003cstrong\u003eStack Flue Temperature Monitoring\u003c\/strong\u003e\u003cbr\u003eMonitors the heater's exhaust flue temperature during operation.\u003c\/div\u003e\n\u003cdiv style=\"background: #f8fafc; border: 1px solid #dbeafe; border-radius: 14px; padding: 16px;\"\u003e\n\u003cstrong\u003eHeater Safety System Component\u003c\/strong\u003e\u003cbr\u003eProvides temperature information used by the heater's electronic safety controls.\u003c\/div\u003e\n\u003cdiv style=\"background: #f8fafc; border: 1px solid #dbeafe; border-radius: 14px; padding: 16px;\"\u003e\n\u003cstrong\u003eMasterTemp Heater Compatibility\u003c\/strong\u003e\u003cbr\u003eDesigned for the listed Pentair MasterTemp heater models, including specified MasterTemp 125 above-ground units.\u003c\/div\u003e\n\u003cdiv style=\"background: #f8fafc; border: 1px solid #dbeafe; border-radius: 14px; padding: 16px;\"\u003e\n\u003cstrong\u003eSta-Rite Max-E-Therm Compatibility\u003c\/strong\u003e\u003cbr\u003eCompatible with specified SR200, SR333 and SR400 heater models.\u003c\/div\u003e\n\u003cdiv style=\"background: #f8fafc; border: 1px solid #dbeafe; border-radius: 14px; padding: 16px;\"\u003e\n\u003cstrong\u003eNatural Gas \u0026amp; Propane Applications\u003c\/strong\u003e\u003cbr\u003eListed for compatible natural gas and propane heater configurations.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c!-- COMPATIBILITY --\u003e\n\u003cdiv style=\"margin-bottom: 32px;\"\u003e\n\u003ch3 style=\"font-size: 26px; margin: 0 0 16px; color: #0f172a;\"\u003eCompatibility \u0026amp; Fitment\u003c\/h3\u003e\n\u003cdiv style=\"background: #f8fafc; border: 1px solid #dbeafe; border-radius: 14px; padding: 18px;\"\u003e\n\u003cp style=\"margin: 0 0 14px;\"\u003eCompatible with the following Pentair and Sta-Rite pool heater models:\u003c\/p\u003e\n\u003cul style=\"margin: 0; padding-left: 20px;\"\u003e\n\u003cli\u003e\n\u003cstrong\u003ePentair MasterTemp Heaters:\u003c\/strong\u003e 460730, 460731, 460732, 460733, 460734, 460735, 460736, 460737, 460792, 460793, 460805, 460806.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePentair MasterTemp 125 Above-Ground Heaters:\u003c\/strong\u003e 461058, 461059, 461060, 461061.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSta-Rite Max-E-Therm Heaters:\u003c\/strong\u003e SR200HD, SR200LP, SR200NA, SR333HD, SR333LP, SR333NA, SR400HD, SR400LP, SR400NA.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp style=\"margin: 16px 0 0;\"\u003e\u003cstrong\u003eCompatible Gas Types:\u003c\/strong\u003e Natural Gas and Propane.\u003c\/p\u003e\n\u003cp style=\"margin: 16px 0 0; font-size: 14px; color: #475569;\"\u003eCompatibility may vary by production year, configuration and installation. Verify your exact model and part number before ordering.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c!-- APPLICATIONS --\u003e\n\u003cdiv style=\"margin-bottom: 32px;\"\u003e\n\u003ch3 style=\"font-size: 26px; margin: 0 0 16px; color: #0f172a;\"\u003eApplications\u003c\/h3\u003e\n\u003cdiv style=\"background: #f8fafc; border: 1px solid #dbeafe; border-radius: 14px; padding: 18px;\"\u003e\n\u003cul style=\"margin: 0; padding-left: 20px;\"\u003e\n\u003cli\u003eReplacement of a faulty or damaged stack flue sensor in compatible Pentair MasterTemp heaters\u003c\/li\u003e\n\u003cli\u003eStack flue temperature monitoring in specified Sta-Rite Max-E-Therm heaters\u003c\/li\u003e\n\u003cli\u003eHeater diagnostics involving stack flue temperature sensor faults\u003c\/li\u003e\n\u003cli\u003eRepair of compatible MasterTemp 125 above-ground pool heaters\u003c\/li\u003e\n\u003cli\u003eProfessional servicing of natural gas and propane pool heater safety control systems\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp style=\"margin: 16px 0 0; font-size: 14px; color: #475569;\"\u003eA stack flue temperature fault does not necessarily indicate a defective sensor. Other heater conditions may cause temperature-related faults. Have the heater professionally diagnosed before replacing the sensor.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c!-- INSTALLATION --\u003e\n\u003cdiv style=\"background: #fff7ed; border: 1px solid #fdba74; border-radius: 14px; padding: 18px; margin-bottom: 32px;\"\u003e\n\u003ch3 style=\"margin: 0 0 10px; font-size: 22px; color: #9a3412;\"\u003eProfessional Installation Recommended\u003c\/h3\u003e\n\u003cp style=\"margin: 0;\"\u003e\u003cstrong\u003eAll service on gas appliances shall be performed by a licensed HVAC contractor.\u003c\/strong\u003e Sensor replacement must follow Pentair's manufacturer instructions and all applicable electrical, plumbing, gas, bonding and building codes.\u003c\/p\u003e\n\u003cp style=\"margin: 12px 0 0;\"\u003eBefore servicing, the heater must be safely shut down, disconnected from electrical power as required and allowed to cool. The contractor should confirm the heater model, inspect the sensor and associated wiring, diagnose the reported fault and verify correct operation of the heater's safety controls following replacement.\u003c\/p\u003e\n\u003cp style=\"margin: 12px 0 0;\"\u003e\u003cstrong\u003eImportant:\u003c\/strong\u003e Never bypass, disconnect or defeat the stack flue sensor or any heater safety device to permit continued operation.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c!-- SPECIFICATIONS --\u003e\n\u003cdiv style=\"margin-bottom: 28px;\"\u003e\n\u003ch3 style=\"font-size: 26px; margin: 0 0 16px; color: #0f172a;\"\u003eSpecifications\u003c\/h3\u003e\n\u003cdiv style=\"overflow-x: auto; border: 1px solid #e5e7eb; border-radius: 14px;\"\u003e\n\u003ctable style=\"width: 100%; min-width: 520px; border-collapse: collapse;\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 12px; border-bottom: 1px solid #e5e7eb;\"\u003e\u003cstrong\u003eSKU\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding: 12px; border-bottom: 1px solid #e5e7eb;\"\u003e42002-0024S\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 12px; border-bottom: 1px solid #e5e7eb;\"\u003e\u003cstrong\u003eBrand\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding: 12px; border-bottom: 1px solid #e5e7eb;\"\u003ePentair\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 12px; border-bottom: 1px solid #e5e7eb;\"\u003e\u003cstrong\u003eProduct Type\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding: 12px; border-bottom: 1px solid #e5e7eb;\"\u003ePool Heater Stack Flue Temperature Sensor\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 12px; border-bottom: 1px solid #e5e7eb;\"\u003e\u003cstrong\u003ePart Number\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding: 12px; border-bottom: 1px solid #e5e7eb;\"\u003e42002-0024S\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 12px; border-bottom: 1px solid #e5e7eb;\"\u003e\u003cstrong\u003eFunction\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding: 12px; border-bottom: 1px solid #e5e7eb;\"\u003eStack Flue Temperature Monitoring\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 12px; border-bottom: 1px solid #e5e7eb;\"\u003e\u003cstrong\u003eCompatibility\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding: 12px; border-bottom: 1px solid #e5e7eb;\"\u003eSpecified Pentair MasterTemp, MasterTemp 125 A\/G and Sta-Rite Max-E-Therm SR200, SR333 and SR400 heater models. See Compatibility \u0026amp; Fitment for exact model numbers.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 12px; border-bottom: 1px solid #e5e7eb;\"\u003e\u003cstrong\u003eCompatible Gas Types\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding: 12px; border-bottom: 1px solid #e5e7eb;\"\u003eNatural Gas and Propane\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 12px; border-bottom: 1px solid #e5e7eb;\"\u003e\u003cstrong\u003eApplication\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding: 12px; border-bottom: 1px solid #e5e7eb;\"\u003ePool Heater Exhaust Temperature Monitoring and Safety Control\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 12px; border-bottom: 1px solid #e5e7eb;\"\u003e\u003cstrong\u003eInstallation\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding: 12px; border-bottom: 1px solid #e5e7eb;\"\u003eLicensed HVAC Contractor Required\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 12px; border-bottom: 1px solid #e5e7eb;\"\u003e\u003cstrong\u003eWarranty\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding: 12px; border-bottom: 1px solid #e5e7eb;\"\u003e1-Year Manufacturer Warranty\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 12px;\"\u003e\u003cstrong\u003eFinal Sale\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding: 12px;\"\u003eYes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c!-- FAQ --\u003e\n\u003cdiv\u003e\n\u003ch3 style=\"font-size: 26px; margin: 0 0 16px; color: #0f172a;\"\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cdiv style=\"background: #ffffff; border: 1px solid #e5e7eb; border-radius: 14px; overflow: hidden;\"\u003e\n\u003cdiv style=\"padding: 16px; border-bottom: 1px solid #e5e7eb;\"\u003e\n\u003cstrong\u003eWhat does the Pentair 42002-0024S stack flue sensor do?\u003c\/strong\u003e\u003cbr\u003eThe stack flue sensor monitors exhaust flue temperature in compatible Pentair and Sta-Rite pool heaters. The heater's electronic control system uses this temperature information as part of its safety monitoring functions.\u003c\/div\u003e\n\u003cdiv style=\"padding: 16px; border-bottom: 1px solid #e5e7eb;\"\u003e\n\u003cstrong\u003eWhich Pentair and Sta-Rite heaters use this sensor?\u003c\/strong\u003e\u003cbr\u003eThe 42002-0024S is listed for specified Pentair MasterTemp, MasterTemp 125 above-ground and Sta-Rite Max-E-Therm SR200, SR333 and SR400 heater models. Refer to the Compatibility \u0026amp; Fitment section for the complete list of model numbers.\u003c\/div\u003e\n\u003cdiv style=\"padding: 16px; border-bottom: 1px solid #e5e7eb;\"\u003e\n\u003cstrong\u003eDoes a stack flue sensor error mean the sensor needs replacement?\u003c\/strong\u003e\u003cbr\u003eNot necessarily. A stack flue temperature fault may be associated with the sensor, its wiring or another heater operating condition. Professional diagnosis is recommended to determine the cause before replacing parts.\u003c\/div\u003e\n\u003cdiv style=\"padding: 16px; border-bottom: 1px solid #e5e7eb;\"\u003e\n\u003cstrong\u003eCan I replace the stack flue sensor myself?\u003c\/strong\u003e\u003cbr\u003eAll service on gas appliances shall be performed by a licensed HVAC contractor. The technician should follow Pentair's service instructions and verify proper heater safety operation after installation.\u003c\/div\u003e\n\u003cdiv style=\"padding: 16px;\"\u003e\n\u003cstrong\u003eWhat is the warranty, and is the sensor final sale?\u003c\/strong\u003e\u003cbr\u003eThe Pentair 42002-0024S stack flue sensor includes a 1-year manufacturer warranty and is designated final sale. Confirm your exact heater model and replacement part number before purchasing.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"Pentair","offers":[{"title":"Default Title","offer_id":46932311834793,"sku":"42002-0024S","price":177.99,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0553\/2647\/4409\/files\/CopyofBV6-1001PES.jpg?v=1774375642","url":"https:\/\/ultimatepools.ca\/products\/pentair-stack-flue-sensor-42002-0024s","provider":"ultimatepools.ca","version":"1.0","type":"link"}