{"product_id":"generic-sw-41-053-thermistor-for-mastertemp-max-e-therm-heater","title":"Swimables Generic Thermistor for MasterTemp Max-E-Therm Heater","description":"\u003cp\u003eThe Swimables SW-41-053 is a generic thermistor for MasterTemp and Max-E-Therm pool heaters. It is an aftermarket replacement, not the original manufacturer sensor.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat a thermistor does\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eA thermistor is a resistor whose resistance changes predictably with temperature. The heater control board reads that resistance and turns it into a water temperature. Every decision the heater makes about firing, holding and shutting down comes back to that one reading.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhy they get replaced\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eSensors sitting in pool water drift and eventually fail. When they do, the heater is working from bad information: the panel shows a temperature the water is not at, the heater short cycles, will not reach setpoint, or throws a sensor fault. Replacing the thermistor is the usual first move once the wiring has been checked.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eGeneric or original\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eThis is the generic version. The original manufacturer thermistor for the same heater electrical system is stocked separately if you would rather fit the factory part.\u003c\/p\u003e","brand":"Swimables","offers":[{"title":"Default Title","offer_id":48633999130836,"sku":"SDC-151-0008","price":52.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0801\/9568\/2516\/files\/default_2ad7ae48-68e3-4c62-a674-9b52111e5c62.jpg?v=1788823575","url":"https:\/\/www.activepoolsupply.com\/products\/generic-sw-41-053-thermistor-for-mastertemp-max-e-therm-heater","provider":"Active Pool Supply","version":"1.0","type":"link"}