{"product_id":"pentair-flue-temperature-sensor-42002-0024s-for-sta-rite-max-e-therm-direct-oem-replacement-plug-in","title":"Pentair Flue Temperature Sensor 42002-0024S for Sta‑Rite Max‑E‑Therm – Direct OEM Replacement, Plug-In","description":"\u003cp\u003e\u003cstrong\u003eThe Pentair 42002-0024S is a direct-replacement stack flue temperature sensor designed for Sta‑Rite Max‑E‑Therm pool and spa heaters to restore reliable temperature detection and heater operation.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eIf your pool or spa heater is showing error codes, failing to fire, or cutting out unexpectedly, the issue can often be a worn or faulty flue sensor. The 42002-0024S is a compact electrical sensor engineered to fit the stack\/flue assembly used in Sta‑Rite Max‑E‑Therm series heaters. It measures flue gas temperature and communicates with the heater’s control board so the system can regulate combustion safely and efficiently.\u003c\/p\u003e\n\n\u003ch3\u003eHow does this sensor affect my heater’s performance?\u003c\/h3\u003e\n\u003cp\u003eThe flue sensor monitors temperature inside the flue to ensure proper combustion and safe shutdowns when temperatures are out of range. A faulty sensor can cause the heater to go into lockout or misread operating conditions, leading to poor heating consistency. Replacing a bad sensor brings the control logic back to correct temperature readings and predictable operation.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eRestores accurate flue temperature feedback to the control board\u003c\/li\u003e\n  \u003cli\u003eReduces false lockouts and intermittent shutdowns\u003c\/li\u003e\n  \u003cli\u003eHelps the heater maintain steady on\/off cycling\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eIs the Pentair 42002-0024S easy to install?\u003c\/h3\u003e\n\u003cp\u003eInstallation typically requires basic hand tools and safe power-disconnection procedures; it plugs into the existing wiring harness and mounts in the flue stack. No special calibration is usually necessary because it’s a direct OEM-equivalent replacement. Always follow the heater manufacturer’s instructions and power-safety steps when replacing electrical components.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eDirect-fit replacement for Sta‑Rite Max‑E‑Therm models\u003c\/li\u003e\n  \u003cli\u003eMounts in the flue stack with the original bracket or clamp\u003c\/li\u003e\n  \u003cli\u003ePlugs into the heater’s existing connector—no extra wiring needed\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat compatibility and part‑matching should I check?\u003c\/h3\u003e\n\u003cp\u003eConfirm your heater model and the existing sensor part number before ordering—42002-0024S matches Sta‑Rite Max‑E‑Therm heater electrical systems. If your unit uses the same flue-sensor form factor and connector type, this Pentair sensor will serve as a proper replacement. For non‑Sta‑Rite heaters, verify physical fit and electrical specifications first.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eOEM part number: 42002-0024S (Pentair)\u003c\/li\u003e\n  \u003cli\u003eIntended for Sta‑Rite Max‑E‑Therm series heaters\u003c\/li\u003e\n  \u003cli\u003eCheck connector type and mounting orientation before purchase\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow can I tell the sensor is failing before replacement?\u003c\/h3\u003e\n\u003cp\u003eSigns of a failing flue sensor include repeated ignition failures, error codes referencing temperature or flame sense, or sudden heater lockouts. Visual inspection may reveal corrosion, frayed wires, or a damaged probe tip. If diagnostics point to inaccurate temperature readings or intermittent connections, replacing the sensor is a practical troubleshooting step.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eHeater displays temperature or sensor-related error codes\u003c\/li\u003e\n  \u003cli\u003eIntermittent operation or unexplained shutdowns\u003c\/li\u003e\n  \u003cli\u003eVisible wire damage or sensor corrosion in the flue area\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho is this for: The Pentair 42002-0024S is intended for pool and spa owners, service technicians, and maintenance professionals working with Sta‑Rite Max‑E‑Therm gas heaters who need an OEM-quality flue temperature sensor replacement. Choose this part when your heater shows sensor-related errors or when routine maintenance indicates the flue sensor is degraded. If you’re unsure about compatibility, consult your heater’s model plate or a certified service technician before ordering.\u003c\/p\u003e\n\n\u003csection class=\"product-faq-snippet\"\u003e\u003ch3\u003eFAQ\u003c\/h3\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Does the 42002-0024S fit all Sta‑Rite Max‑E‑Therm heaters?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: It’s designed for Sta‑Rite Max‑E‑Therm models using the same flue-sensor form factor; verify your heater’s part number to confirm fit.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Do I need to calibrate the sensor after installation?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: No calibration is typically required—install, reconnect, and power on, following the heater’s startup procedure.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"Pentair","offers":[{"title":"Default Title","offer_id":56840807088468,"sku":"B004VTGELU","price":114.6,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1063\/2652\/4244\/files\/pentair-42002-0024s-front-view.jpg?v=1787073256","url":"https:\/\/gardenluxe.co.uk\/products\/pentair-flue-temperature-sensor-42002-0024s-for-sta-rite-max-e-therm-direct-oem-replacement-plug-in","provider":"Gardenluxe Uk","version":"1.0","type":"link"}