{"product_id":"balboa-temperature-sensors-m7-305mm","title":"Balboa M7 Heater Temperature Sensor - sNA, SA, sNB, SB Error Fix - 12\" \/ 14\" \/ 24\"","description":"\u003ch3\u003eBalboa M7 Heater Temperature Sensor - sNA, SA, sNB, SB Error Fix - 12\" \/ 14\" \/ 24\"\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eGenuine Balboa M7 Temperature \/ Hi-Limit Sensor.\u003c\/strong\u003e This sensor is used in many Balboa M7 spa control systems where two matching sensors are fitted into the heater tube to monitor water temperature, heater temperature and flow conditions.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\u003cspan style=\"color: rgb(43, 0, 255);\"\u003e\u003cstrong\u003ePhysically Stocked, unlike most \"drop-shipping\" websites.\u003c\/strong\u003e\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan style=\"color: rgb(43, 0, 255);\"\u003e\u003cstrong\u003eShipped from VIC, NSW, WA, QLD\u003c\/strong\u003e\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cstrong\u003eGenuine Balboa part, not a generic copy.\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eUsed for both temperature and hi-limit sensing on M7 heater systems.\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eCommonly used in Balboa GS, GL, BP and Revolution style control systems.\u003c\/strong\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eBalboa M7 Sensor Details\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eConnector:\u003c\/strong\u003e 2-pin plug for Balboa circuit boards\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProbe diameter:\u003c\/strong\u003e approximately 6.3mm \/ 1\/4 inch\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFunction:\u003c\/strong\u003e temperature sensor and hi-limit sensor, depending on position and system\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCommon error codes:\u003c\/strong\u003e Sn, SA, Sb, OH, HH, dry heater, heater may be dry, sensor balance errors\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSensor type:\u003c\/strong\u003e 30k NTC thermistor\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eResistance:\u003c\/strong\u003e approximately 30kΩ at 25°C\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eWhat This Sensor Does\u003c\/h3\u003e\n\u003cp\u003eBalboa M7 systems generally use two identical sensors, one at each end of the heater tube. The control box compares the readings from both sensors to monitor spa water temperature, heater temperature and water flow through the heater.\u003c\/p\u003e\n\u003cp\u003eIf one sensor is faulty, drifting, open-circuit, shorted or reading differently from the other sensor, the spa may show sensor, overheat or dry heater errors even when the heater tube is full of water.\u003c\/p\u003e\n\u003ch3\u003eWhen To Replace Balboa M7 Sensors\u003c\/h3\u003e\n\u003cp\u003eThis sensor may be required if your Balboa spa control system is showing faults such as \u003cstrong\u003eSn, SA, Sb, OH, HH, dry, dr, dRY, heater may be dry, sensor balance\u003c\/strong\u003e or unexplained heating shutdowns.\u003c\/p\u003e\n\u003cp\u003eIn many cases it is best to replace both M7 sensors at the same time, especially on older systems, because the spa controller relies on the two sensors reading closely together.\u003c\/p\u003e\n\u003ch3\u003eImportant Before Ordering\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eCheck the cable length of your existing sensor before ordering.\u003c\/li\u003e\n\u003cli\u003eSome Balboa M7 sensors are the same electrically but have different cable lengths.\u003c\/li\u003e\n\u003cli\u003eMake sure the sensor probe, plug and cable length match your existing sensor.\u003c\/li\u003e\n\u003cli\u003eThis is not a pressure switch. M7 systems use temperature sensors to help detect flow through the heater.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eCommon Balboa Part Numbers\u003c\/h3\u003e\n\u003cp\u003eDepending on cable length and version, Balboa M7 sensors may be associated with part numbers including \u003cstrong\u003e30344, 53605, 32016, 30382, 30514, 25283\u003c\/strong\u003e and other superseded or spa-brand-specific numbers. Always compare the plug, probe and cable length before ordering.\u003c\/p\u003e\n\u003ch3\u003eCommon Compatibility Guide\u003c\/h3\u003e\n\u003cp\u003eThis sensor type is commonly used on Balboa M7 heater and control systems, including many systems in the following ranges. This is a guide only and is not a complete list of every compatible spa or control box.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBalboa GS Series:\u003c\/strong\u003e commonly seen on GS100, GS500, GS500Z, GS501, GS501Z, GS510, GS511, GS520, GS523 and other GS M7 systems\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBalboa GL Series:\u003c\/strong\u003e commonly seen on GL2000, GL800, GL1200 and other GL M7 systems, but check carefully as some GL systems use different sensor arrangements\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBalboa BP Series:\u003c\/strong\u003e commonly seen on BP200, BP501, BP601, BP7, BP2100 and other BP M7 systems\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBalboa Revolution Series:\u003c\/strong\u003e used on some Revolution control systems with M7 heater sensing\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBalboa Value \/ LE \/ SUV Systems:\u003c\/strong\u003e some 1000LE, 2000LE, 2000 Value and SUV systems use M7 sensors, but cable length and version must be confirmed\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Balboa","offers":[{"title":"Default Title","offer_id":35746383986844,"sku":"B-32016","price":93.0,"currency_code":"NZD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0372\/5253\/files\/balboa-m7-heater-temperature-sensor-sna-sa-snb-sb-error-fix-12-14-24-pool-spa-775.webp?v=1782210632","url":"https:\/\/heaterandspaparts.com.au\/en-nz\/products\/balboa-temperature-sensors-m7-305mm","provider":"Heater and Spa Parts","version":"1.0","type":"link"}