{"product_id":"blue-diamond-maxiblue-reservoir-sensor-spare-c21-013","title":"Blue Diamond MaxiBlue Reservoir Sensor (Spare Part) | C21-013","description":"\u003ch2\u003eBlue Diamond MaxiBlue Reservoir Sensor (Spare Part) — C21-013\u003c\/h2\u003e\u003cp\u003eThe Blue Diamond C21-013 MaxiBlue Reservoir Sensor is a genuine Charles Austen Pumps replacement sensor kit for BlueDiamond® MaxiBlue condensate removal pumps. It replaces unreliable mechanical float switches with solid-state thermistor technology — delivering maintenance-free, fail-safe condensate management for air conditioning and refrigeration systems.\u003c\/p\u003e\u003ch3\u003eHow It Works\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eWater collection:\u003c\/strong\u003e The plastic reservoir sits inside or just below the AC unit to catch falling condensate droplets.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSolid-state sensing:\u003c\/strong\u003e Thermistor technology detects water level without any mechanical float — immune to slime, algae, and dirt build-up.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePump trigger:\u003c\/strong\u003e When water rises to the trigger level, the sensor signals the MaxiBlue pump to run. Once the tank is empty, the pump shuts off automatically.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eKey Features\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eNo moving parts\u003c\/strong\u003e — maintenance-free, no float to clog or stick\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFail-Safe Alarm (FSA)\u003c\/strong\u003e — built-in relay shuts down the AC unit on overflow, preventing water damage\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePlug-and-play\u003c\/strong\u003e — pre-wired 2m cable connects directly to the MaxiBlue pump control port\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eGenuine Blue Diamond \/ Charles Austen Pumps spare part\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eMaxiBlue compatible only\u003c\/strong\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003cth\u003eValue\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003ePart Number\u003c\/td\u003e\n\u003ctd\u003eC21-013\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBrand\u003c\/td\u003e\n\u003ctd\u003eBlue Diamond \/ Charles Austen Pumps\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCompatibility\u003c\/td\u003e\n\u003ctd\u003eMaxiBlue\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSensor Type\u003c\/td\u003e\n\u003ctd\u003eThermistor Sensing\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions\u003c\/td\u003e\n\u003ctd\u003e90 × 40 × 30mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCable Length\u003c\/td\u003e\n\u003ctd\u003e2m (6.5 ft)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003ch3\u003eWhat's Included\u003c\/h3\u003e\u003cul\u003e\u003cli\u003e1 × Blue Diamond C21-013 MaxiBlue Reservoir Sensor\u003c\/li\u003e\u003c\/ul\u003e\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\u003ch4\u003eIs this compatible with MegaBlue or MiniBlue pumps?\u003c\/h4\u003e\u003cp\u003eNo — the C21-013 is designed specifically for the MaxiBlue condensate pump. For MegaBlue, see the \u003ca href=\"\/products\/blue-diamond-megablue-reservoir-sensor-spare-c21-008\"\u003eC21-008 MegaBlue Reservoir Sensor\u003c\/a\u003e.\u003c\/p\u003e\u003ch4\u003eIs this a genuine Blue Diamond part?\u003c\/h4\u003e\u003cp\u003eYes — the C21-013 is a genuine Charles Austen Pumps \/ Blue Diamond spare part, not an aftermarket replacement.\u003c\/p\u003e\u003ch4\u003eDoes this include the complete pump?\u003c\/h4\u003e\u003cp\u003eNo — this is the reservoir sensor only, sold as a spare or replacement part. It does not include the MaxiBlue pump.\u003c\/p\u003e\u003ch3\u003eRelated Products\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\u003ca href=\"\/products\/blue-diamond-megablue-reservoir-sensor-spare-c21-008\"\u003eBlue Diamond C21-008 MegaBlue Reservoir Sensor (Spare)\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/blue-diamond-c21-014-multitank\"\u003eBlue Diamond C21-014 MultiTank\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/collections\/all\"\u003eBrowse All Blue Diamond Condensate Pump Accessories\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Blue Diamond","offers":[{"title":"Default Title","offer_id":63921624416633,"sku":"C21-013","price":34.45,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0984\/0158\/3481\/files\/image_8aad465c-2f7e-4b45-8752-eb4347e7f834.png?v=1783607052","url":"https:\/\/www.airconspares.com\/products\/blue-diamond-maxiblue-reservoir-sensor-spare-c21-013","provider":"Airconspares.com","version":"1.0","type":"link"}