{"product_id":"sundance-780-series-2pump-enc-system-circuit-board-052418-102023-part-6600404","title":"Sundance® 780 Series 2‑Pump ENC System Circuit Board (05\/24\/18 – 10\/2023) Part #6600‑404","description":"\u003cdiv class=\"OutlineElement Ltr SCXW212846447 BCX8\"\u003e\n\u003cdiv\u003e\u003cstrong\u003ePart Number: 6600-404\u003c\/strong\u003e\u003c\/div\u003e\n\u003cdiv\u003e\u003cstrong\u003eBrand: Sundance Spas\u003c\/strong\u003e\u003c\/div\u003e\n\u003cdiv\u003e\u003cstrong\u003eSundance® 780 ENC Logic Board – 2‑Pump Systems (Hamilton, Chelsee, Bristol, Montclair)\u003c\/strong\u003e\u003c\/div\u003e\n\u003cp class=\"Paragraph SCXW212846447 BCX8\" role=\"heading\" aria-level=\"1\" lang=\"EN-US\"\u003e \u003c\/p\u003e\n\u003cp class=\"Paragraph SCXW212846447 BCX8\" role=\"heading\" aria-level=\"1\" lang=\"EN-US\"\u003e\u003cstrong\u003e\u003cspan data-contrast=\"none\" lang=\"EN-US\" class=\"TextRun SCXW212846447 BCX8\"\u003e\u003cspan class=\"NormalTextRun SCXW212846447 BCX8\" data-ccp-parastyle=\"heading 1\"\u003e⚠\u003c\/span\u003e\u003c\/span\u003e\u003cspan data-contrast=\"none\" lang=\"EN-US\" class=\"TextRun SCXW212846447 BCX8\"\u003e\u003cspan class=\"NormalTextRun SCXW212846447 BCX8\" data-ccp-parastyle=\"heading 1\"\u003e️ IMPORTANT DISCLAIMER – PLEASE READ BEFORE PURCHASING\u003c\/span\u003e\u003c\/span\u003e\u003cspan class=\"EOP SCXW212846447 BCX8\" data-ccp-props='{\"134233117\":false,\"134233118\":false,\"134245418\":true,\"134245529\":true,\"201341983\":0,\"335551550\":0,\"335551620\":0,\"335559738\":281,\"335559739\":281,\"335559740\":300}'\u003e \u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"OutlineElement Ltr SCXW212846447 BCX8\"\u003e\n\u003cul\u003e\n\u003cli class=\"Paragraph SCXW212846447 BCX8\" lang=\"EN-US\"\u003e\n\u003cspan data-contrast=\"auto\" lang=\"EN-US\" class=\"TextRun SCXW212846447 BCX8\"\u003e\u003cspan class=\"NormalTextRun SCXW212846447 BCX8\"\u003eThere are\u003cspan\u003e \u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003cspan data-contrast=\"auto\" lang=\"EN-US\" class=\"TextRun SCXW212846447 BCX8\"\u003e\u003cspan class=\"NormalTextRun SCXW212846447 BCX8\"\u003eno refunds or returns\u003c\/span\u003e\u003c\/span\u003e\u003cspan data-contrast=\"auto\" lang=\"EN-US\" class=\"TextRun SCXW212846447 BCX8\"\u003e\u003cspan class=\"NormalTextRun SCXW212846447 BCX8\"\u003e\u003cspan\u003e \u003c\/span\u003eon electronic spa parts\u003c\/span\u003e\u003c\/span\u003e\u003cspan data-contrast=\"auto\" lang=\"EN-US\" class=\"TextRun SCXW212846447 BCX8\"\u003e\u003cspan class=\"NormalTextRun SCXW212846447 BCX8\"\u003e, including control panels and keypads.\u003c\/span\u003e\u003c\/span\u003e\u003cspan class=\"LineBreakBlob BlobObject DragDrop SCXW212846447 BCX8\"\u003e\u003cspan class=\"SCXW212846447 BCX8\"\u003e \u003c\/span\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli class=\"Paragraph SCXW212846447 BCX8\" lang=\"EN-US\"\u003e\n\u003cspan data-contrast=\"auto\" lang=\"EN-US\" class=\"TextRun SCXW212846447 BCX8\"\u003e\u003cspan class=\"NormalTextRun SCXW212846447 BCX8\"\u003ePlease verify compatibility with your hot tub model before ordering.\u003c\/span\u003e\u003c\/span\u003e\u003cspan class=\"LineBreakBlob BlobObject DragDrop SCXW212846447 BCX8\"\u003e\u003cspan class=\"SCXW212846447 BCX8\"\u003e \u003c\/span\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli class=\"Paragraph SCXW212846447 BCX8\" lang=\"EN-US\"\u003e\n\u003cspan data-contrast=\"auto\" lang=\"EN-US\" class=\"TextRun SCXW212846447 BCX8\"\u003e\u003cspan class=\"NormalTextRun SCXW212846447 BCX8\"\u003eAll electronic components are\u003cspan\u003e \u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003cspan data-contrast=\"auto\" lang=\"EN-US\" class=\"TextRun SCXW212846447 BCX8\"\u003e\u003cspan class=\"NormalTextRun SCXW212846447 BCX8\"\u003ecovered under the original manufacturer’s warranty\u003c\/span\u003e\u003c\/span\u003e\u003cspan data-contrast=\"auto\" lang=\"EN-US\" class=\"TextRun SCXW212846447 BCX8\"\u003e\u003cspan class=\"NormalTextRun SCXW212846447 BCX8\"\u003e.\u003c\/span\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli class=\"Paragraph SCXW212846447 BCX8\" lang=\"EN-US\"\u003eWill only work with an encrypted control panel P\/N 6600-385\u003c\/li\u003e\n\u003cli class=\"Paragraph SCXW212846447 BCX8\" lang=\"EN-US\"\u003eCannot be used with control panel 6600-116\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003ch2\u003e\u003cstrong\u003eOverview\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003ePart \u003cstrong\u003e6600‑404\u003c\/strong\u003e is the OEM \u003cstrong\u003e2‑Pump ENC System Circuit Board\u003c\/strong\u003e used in Sundance® 780™ Series spas manufactured from \u003cstrong\u003eMay 24th, 2018 through October 2023\u003c\/strong\u003e. This control board manages all primary spa operations, including pump sequencing, heater logic, lighting, ClearRay® UV readiness, and filtration cycles.\u003c\/p\u003e\n\u003cp\u003eIt is engineered specifically for the \u003cstrong\u003eENC‑style control box\u003c\/strong\u003e used during this manufacturing window, replacing earlier 780 series 2‑pump PCBs like \u003cstrong\u003e6600‑848\u003c\/strong\u003e (pre‑05\/2018 models).\u003c\/p\u003e\n\u003chr\u003e\n\u003ch2\u003e\u003cstrong\u003eCompatible Spa Models \u0026amp; Years\u003c\/strong\u003e\u003c\/h2\u003e\n\u003ch3\u003e✔ \u003cstrong\u003eSundance® 780™ Series (2‑Pump Models)\u003c\/strong\u003e\n\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eProduction Range:\u003c\/strong\u003e \u003cstrong\u003e05\/24\/2018 – 10\/2023\u003c\/strong\u003e\u003c\/p\u003e\n\u003cdiv class=\"___i31lg00 f10pi13n f14t3ns0 f1nbblvp fat0sn4 f1ov4xf1 fekwl8i f1lmfglv f1oz7aqm f1abmfm4 f1w619qj f16h0jq8\"\u003e\n\u003ctable class=\"___1hm93bs f1ddd56o f16vktn6 f1enuhaj fdclmfp f1ev3kgc ftgm304 f1uinfot fibjyge fvueend f9yszdx f1fu4s3n f3l3pb3 f1s2k7dp f8fmt76 fjvbh62 fysh76l fic4ptz f1yenhzu f1yn6nvh f14tj6oe f1jq587y f1el8yx3 f1pymoxg f1ofu761 fe6itr f7coize f1794535 f70r78m f4zgifc fk1v6el f16pyhcb fo436u6 fzy4j18 fc43013 f1hmrcvb fc4t9fq fgp09rh fjnyn6r\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003eModel\u003c\/th\u003e\n\u003cth\u003eCompatibility\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003e\u003cstrong\u003eHamilton\u003c\/strong\u003e\u003c\/th\u003e\n\u003ctd\u003e2018.5 – 2023\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003e\u003cstrong\u003eChelsee\u003c\/strong\u003e\u003c\/th\u003e\n\u003ctd\u003e2018.5 – 2023\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003e\u003cstrong\u003eBristol\u003c\/strong\u003e\u003c\/th\u003e\n\u003ctd\u003e2018.5 – 2023\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003e\u003cstrong\u003eMontclair\u003c\/strong\u003e\u003c\/th\u003e\n\u003ctd\u003e2018.5 – 2023\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003chr\u003e\n\u003ch2\u003e\u003cstrong\u003eTechnical Details\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSystem Type:\u003c\/strong\u003e Sundance® 780 ENC (Enhanced North American Control)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePump Configuration:\u003c\/strong\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePump 1:\u003c\/strong\u003e 2‑speed\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePump 2:\u003c\/strong\u003e 1‑speed\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBoard Functions:\u003c\/strong\u003e\n\u003cul\u003e\n\u003cli\u003eJet pump control\u003c\/li\u003e\n\u003cli\u003eHeater operation logic\u003c\/li\u003e\n\u003cli\u003eFiltration cycle timing\u003c\/li\u003e\n\u003cli\u003eLighting system control\u003c\/li\u003e\n\u003cli\u003eClearRay® UV indicator logic\u003c\/li\u003e\n\u003cli\u003eTemperature \u0026amp; high‑limit sensor interface\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVoltage:\u003c\/strong\u003e 240V system\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFirmware:\u003c\/strong\u003e ENC 780 2‑Pump operating logic (2018.5+ revision)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTopside Compatibility:\u003c\/strong\u003e 780 Series touchpad \u0026amp; LCD panel (2018+)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch2\u003e\u003cstrong\u003ePurpose \u0026amp; Performance\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eThe \u003cstrong\u003e6600‑404 Circuit Board\u003c\/strong\u003e:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eCoordinates 2‑pump hydrotherapy operation in 780 models\u003c\/li\u003e\n\u003cli\u003eManages the 5.5 kW heater within the spa’s 780 control architecture\u003c\/li\u003e\n\u003cli\u003eIntegrates with Sundance’s ClearRay® water‑care system\u003c\/li\u003e\n\u003cli\u003eProvides efficient filtration \u0026amp; temperature regulation cycles\u003c\/li\u003e\n\u003cli\u003eSupports LED lighting control on 2018+ updated 780 Series shells\u003c\/li\u003e\n\u003cli\u003eFeatures updated logic for improved reliability over previous 780 boards (pre‑2018)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eReplacing this PCB resolves:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eDead or unresponsive topside\u003c\/li\u003e\n\u003cli\u003eNo‑heat issues\u003c\/li\u003e\n\u003cli\u003ePump activation failures\u003c\/li\u003e\n\u003cli\u003eLighting malfunctions\u003c\/li\u003e\n\u003cli\u003eLogic‑based FLO\/OH\/ILOC errors common with failing 780 boards\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch2\u003e\u003cstrong\u003eRelated \/ Previous Parts\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cdiv class=\"___i31lg00 f10pi13n f14t3ns0 f1nbblvp fat0sn4 f1ov4xf1 fekwl8i f1lmfglv f1oz7aqm f1abmfm4 f1w619qj f16h0jq8\"\u003e\n\u003ctable class=\"___1hm93bs f1ddd56o f16vktn6 f1enuhaj fdclmfp f1ev3kgc ftgm304 f1uinfot fibjyge fvueend f9yszdx f1fu4s3n f3l3pb3 f1s2k7dp f8fmt76 fjvbh62 fysh76l fic4ptz f1yenhzu f1yn6nvh f14tj6oe f1jq587y f1el8yx3 f1pymoxg f1ofu761 fe6itr f7coize f1794535 f70r78m f4zgifc fk1v6el f16pyhcb fo436u6 fzy4j18 fc43013 f1hmrcvb fc4t9fq fgp09rh fjnyn6r\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003ePart Number\u003c\/th\u003e\n\u003cth\u003eDescription\u003c\/th\u003e\n\u003cth\u003eNotes\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003e\u003cstrong\u003e6600‑848\u003c\/strong\u003e\u003c\/th\u003e\n\u003ctd\u003e780 2‑Pump Board (04\/2017 – 05\/23\/18)\u003c\/td\u003e\n\u003ctd\u003eDirect predecessor\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003e\u003cstrong\u003e6600‑846\u003c\/strong\u003e\u003c\/th\u003e\n\u003ctd\u003e780 1‑Pump (04\/2017 – 03\/2021)\u003c\/td\u003e\n\u003ctd\u003eNot interchangeable\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003e\u003cstrong\u003e6600‑404\u003c\/strong\u003e\u003c\/th\u003e\n\u003ctd\u003e\u003cstrong\u003eCurrent listing (05\/24\/18 – 10\/2023)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eThis part\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003e\u003cstrong\u003eClearRay® support parts\u003c\/strong\u003e\u003c\/th\u003e\n\u003ctd\u003eSensors \u0026amp; wiring\u003c\/td\u003e\n\u003ctd\u003eBoard interfaces but does not include module\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003chr\u003e\n\u003ch2\u003e\u003cstrong\u003eOrdering Notes\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eONLY for 780 Series 2‑Pump ENC systems\u003c\/strong\u003e built \u003cstrong\u003e05\/24\/18 – 10\/2023\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eNot compatible with:\n\u003cul\u003e\n\u003cli\u003ePre‑2017 780 boards (different harnessing \u0026amp; logic)\u003c\/li\u003e\n\u003cli\u003e1‑Pump systems (use 6600‑846 instead)\u003c\/li\u003e\n\u003cli\u003e2024+ True Platform systems\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003eElectronics are \u003cstrong\u003enon‑returnable\u003c\/strong\u003e once installed (standard Sundance\/Jacuzzi policy).\u003c\/li\u003e\n\u003cli\u003eAlways confirm spa \u003cstrong\u003eserial number prefix\u003c\/strong\u003e before ordering.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003ch3\u003e\u003cbr\u003e\u003c\/h3\u003e\n\u003ch3\u003e\u003cbr\u003e\u003c\/h3\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e","brand":"Sundance Spas","offers":[{"title":"Default Title","offer_id":46355773063340,"sku":"6600-404","price":1489.05,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0756\/2077\/8156\/files\/6600-404.png?v=1785171794","url":"https:\/\/snowvalleyspas.ca\/products\/sundance-780-series-2pump-enc-system-circuit-board-052418-102023-part-6600404","provider":"Snow Valley Spas","version":"1.0","type":"link"}