{"product_id":"pentairminimax115degreefhilimitthermostat471587pen471587","title":"Pentair MiniMax 115 Degree F Hi-Limit Thermostat | 471587","description":"\u003cdiv\u003e\n  \u003ch2\u003ePentair MiniMax NT High Limit Thermostat \/ Hi-Limit Sensor, 115°F (Auto Reset) | 471587\u003c\/h2\u003e\n\n  \u003cp\u003e\n    The Pentair \u003cstrong\u003e471587\u003c\/strong\u003e is an OEM \u003cstrong\u003e115°F high limit thermostat (hi-limit sensor)\u003c\/strong\u003e used on select\n    Pentair\/Sta-Rite gas pool and spa heaters. This auto-reset safety switch helps protect the heater by interrupting operation\n    if internal water temperature reaches an unsafe level. Replace it if your heater is shutting down on high limit, showing\n    hi-limit fault symptoms, or if the original sensor is corroded, out of calibration, or physically damaged.\n  \u003c\/p\u003e\n\n  \u003ch3\u003eKey Features\u003c\/h3\u003e\n  \u003cul\u003e\n    \u003cli\u003e\n\u003cstrong\u003eSafety high-limit protection:\u003c\/strong\u003e helps prevent overheating by opening the safety circuit at approximately \u003cstrong\u003e115°F\u003c\/strong\u003e.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eAuto-reset style:\u003c\/strong\u003e restores once temperatures return to normal (heater-dependent behavior and conditions).\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eOEM Pentair replacement:\u003c\/strong\u003e correct fit and electrical characteristics for compatible heater control systems.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eCommon service item:\u003c\/strong\u003e frequently replaced during heater troubleshooting and rebuilds.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003ch3\u003eCommon Compatibility\u003c\/h3\u003e\n  \u003cul\u003e\n    \u003cli\u003ePentair \u003cstrong\u003eMiniMax NT\u003c\/strong\u003e heaters (200, 250, 300, 400 models) where parts diagram specifies \u003cstrong\u003e471587\u003c\/strong\u003e\n\u003c\/li\u003e\n    \u003cli\u003eSelect \u003cstrong\u003eMiniMax\u003c\/strong\u003e heater variants including Low NOx \/ TSI \/ LN configurations where specified\u003c\/li\u003e\n  \u003c\/ul\u003e\n  \u003cp\u003e\n    \u003cem\u003eTip:\u003c\/em\u003e Many heaters use more than one limit switch (often a 115°F and a higher-limit switch). Match the temperature rating and part number on your heater’s parts diagram.\n  \u003c\/p\u003e\n\n  \u003ch3\u003eSpecifications\u003c\/h3\u003e\n  \u003cul\u003e\n    \u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e Pentair\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003ePart Number:\u003c\/strong\u003e 471587\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003ePart Type:\u003c\/strong\u003e High limit thermostat \/ hi-limit sensor\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eTrip Rating:\u003c\/strong\u003e 115°F\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eReset:\u003c\/strong\u003e Auto reset\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eQuantity:\u003c\/strong\u003e Sold individually\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003ch3\u003eCommon Symptoms of a Failing High Limit\u003c\/h3\u003e\n  \u003cul\u003e\n    \u003cli\u003eHeater starts then shuts down and indicates a high-limit condition\u003c\/li\u003e\n    \u003cli\u003eIntermittent shutdowns that return after cooling\u003c\/li\u003e\n    \u003cli\u003eCorroded terminals, brittle wiring, or damaged sensor body\u003c\/li\u003e\n    \u003cli\u003eNuisance trips after confirming water flow and filtration are normal\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003ch3\u003eInstallation Notes\u003c\/h3\u003e\n  \u003cul\u003e\n    \u003cli\u003eTurn off power to the heater at the breaker before servicing.\u003c\/li\u003e\n    \u003cli\u003eAllow the heater to cool completely before removing sensors.\u003c\/li\u003e\n    \u003cli\u003eTransfer wires one at a time to the new switch to avoid miswiring.\u003c\/li\u003e\n    \u003cli\u003eIf the heater continues to trip the high limit, verify circulation first (dirty filter, closed valves, low pump speed, air in system) before assuming the new part is defective.\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\/pages\/search-results-page?q=471587\"\u003eSearch Aqua Pool Supply for 471587\u003c\/a\u003e\u003c\/li\u003e\n    \u003cli\u003e\u003ca href=\"https:\/\/aquapoolsupply.com\/pages\/search-results-page?q=MiniMax%20NT%20parts\"\u003ePentair MiniMax NT heater parts\u003c\/a\u003e\u003c\/li\u003e\n    \u003cli\u003e\u003ca href=\"https:\/\/aquapoolsupply.com\/pages\/search-results-page?q=high%20limit%20switch%20150\"\u003e150°F high limit switches\u003c\/a\u003e\u003c\/li\u003e\n    \u003cli\u003e\u003ca href=\"https:\/\/aquapoolsupply.com\/pages\/search-results-page?q=heater%20thermistor\"\u003eHeater thermistors \/ temperature sensors\u003c\/a\u003e\u003c\/li\u003e\n    \u003cli\u003e\u003ca href=\"https:\/\/aquapoolsupply.com\/pages\/search-results-page?q=heater%20pressure%20switch\"\u003eHeater pressure switches\u003c\/a\u003e\u003c\/li\u003e\n    \u003cli\u003e\u003ca href=\"https:\/\/aquapoolsupply.com\/pages\/search-results-page?q=heater%20gasket\"\u003eHeater gaskets \u0026amp; seals\u003c\/a\u003e\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003ch3\u003eMaintenance Tips\u003c\/h3\u003e\n  \u003cul\u003e\n    \u003cli\u003eMost high-limit trips are caused by low water flow—keep baskets and filter clean and confirm valves are fully open.\u003c\/li\u003e\n    \u003cli\u003eFor variable-speed pumps, ensure the heater’s “heating speed” provides adequate flow when the heater is enabled.\u003c\/li\u003e\n    \u003cli\u003eMaintain balanced water chemistry to reduce scale buildup inside the heater that can create hot spots and nuisance trips.\u003c\/li\u003e\n    \u003cli\u003eInspect heater wiring connections seasonally for corrosion and tighten loose spade terminals as needed.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\u003c\/div\u003e\n","brand":"Pentair","offers":[{"title":"Default Title","offer_id":52589951418684,"sku":"471587","price":49.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0736\/3280\/9276\/files\/pentair-minimax-115-degree-f-hi-limit-thermostat-471587-heater-parts-5150306.jpg?v=1771561343","url":"https:\/\/aquapoolsupply.com\/products\/pentairminimax115degreefhilimitthermostat471587pen471587","provider":"Aqua Pool Supply","version":"1.0","type":"link"}