{"product_id":"sundance-jacuzzi-780-series-1pump-control-board-dover-only-60-hz-2023-part-6600623","title":"Sundance® \/ Jacuzzi® 780 Series 1‑Pump Control Board (Dover Only) – 60 Hz (2023+) Part #6600‑623","description":"\u003cdiv\u003e\u003cstrong\u003ePart Number: 6600-623\u003c\/strong\u003e\u003c\/div\u003e\n\u003cdiv\u003e\u003cstrong\u003eBrand: Sundance Spas\u003c\/strong\u003e\u003c\/div\u003e\n\u003cdiv\u003e\u003cstrong\u003ePWA: CNTRL 780 1‑Pump 60Hz ‘23 – Sundance® Dover Control Board\u003c\/strong\u003e\u003c\/div\u003e\n\u003cdiv\u003e\n\u003ch4\u003e\u003c\/h4\u003e\n\u003ch4\u003e⚠️ IMPORTANT DISCLAIMER – PLEASE READ BEFORE PURCHASING\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003eThere are no refunds or returns on electronic spa parts.\u003c\/li\u003e\n\u003cli\u003ePlease verify compatibility with your hot tub model before ordering.\u003c\/li\u003e\n\u003cli\u003eAll electronic components are covered under the original manufacturer’s warranty.\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\u003e6600‑623\u003c\/strong\u003e is the \u003cstrong\u003eofficial 2023+ Sundance® 780 Series 1‑Pump system control board\u003c\/strong\u003e, used exclusively in the \u003cstrong\u003eDover\u003c\/strong\u003e model beginning in late 2023. This PCB replaces earlier 780 1‑pump boards—including \u003cstrong\u003e6600‑846 (2017–2023)\u003c\/strong\u003e—as part of Sundance’s electronics update cycle for the 780 platform.\u003c\/p\u003e\n\u003cp\u003eThis control board interfaces with Sundance’s updated \u003cstrong\u003e780 LCD topside panels\u003c\/strong\u003e, manages the \u003cstrong\u003eheater\u003c\/strong\u003e, \u003cstrong\u003ecirculation timing\u003c\/strong\u003e, \u003cstrong\u003elighting control\u003c\/strong\u003e, and the \u003cstrong\u003esingle jet pump\u003c\/strong\u003e used in the Dover spa.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cdiv\u003e\n\u003ch2\u003e\u003cstrong\u003eCompatible Spa Models \u0026amp; Years\u003c\/strong\u003e\u003c\/h2\u003e\n\u003ch3\u003e✔ \u003cstrong\u003eSundance® 780™ Series (1‑Pump Models)\u003c\/strong\u003e\n\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eProduction Window:\u003c\/strong\u003e \u003cstrong\u003eLate 2023+ (Model Year ‘23\/’24)\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCompatible Model:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eDover\u003c\/strong\u003e (1‑Pump configuration only)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e✖ NOT compatible with:\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e2‑pump 780 models (Hamilton, Chelsee, Bristol, Hanover, Montclair) → use \u003cstrong\u003e6600‑404 \/ 6600‑848\u003c\/strong\u003e depending on year\u003c\/li\u003e\n\u003cli\u003ePre‑2017 780 boards (different wiring harness \u0026amp; logic)\u003c\/li\u003e\n\u003cli\u003e880, 980, or 680 Series spas\u003c\/li\u003e\n\u003cli\u003eEuropean 50Hz models\u003c\/li\u003e\n\u003c\/ul\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 “’23 revision” control board\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 (jet + filtration)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVoltage:\u003c\/strong\u003e 240V, North American \u003cstrong\u003e60Hz\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTopside Panel Compatibility:\u003c\/strong\u003e\n\u003cul\u003e\n\u003cli\u003eSundance® 780 Series LCD interfaces (2023+)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHeater Control:\u003c\/strong\u003e\n\u003cul\u003e\n\u003cli\u003e5.5 kW stainless heater (standard 780 element)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSupported Sensors:\u003c\/strong\u003e\n\u003cul\u003e\n\u003cli\u003eTemperature sensor\u003c\/li\u003e\n\u003cli\u003eHi‑limit sensor\u003c\/li\u003e\n\u003cli\u003eFlow\/pressure switch (model‑specific)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIntegrated Features:\u003c\/strong\u003e\n\u003cul\u003e\n\u003cli\u003eSmart Logic filtration\u003c\/li\u003e\n\u003cli\u003eClearRay® UV readiness\u003c\/li\u003e\n\u003cli\u003eLED lighting control\u003c\/li\u003e\n\u003cli\u003eWatchdog and safety shutoff logic\u003c\/li\u003e\n\u003c\/ul\u003e\n\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\u003e6600‑623 Dover control board\u003c\/strong\u003e manages:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eWater temperature and heater activation\u003c\/li\u003e\n\u003cli\u003eLED lighting and auxiliary functions\u003c\/li\u003e\n\u003cli\u003e2‑speed pump sequencing (low‑speed filtration \/ high‑speed jets)\u003c\/li\u003e\n\u003cli\u003eClearRay® UV logic (monitoring\/indicator)\u003c\/li\u003e\n\u003cli\u003eCirculation timing and Smart Logic cycles\u003c\/li\u003e\n\u003cli\u003eSafety and fault monitoring (FLO, OH, Sn, ILOC, etc.)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eReplacing the board resolves issues such as:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eNo power to topside\u003c\/li\u003e\n\u003cli\u003eHeater not activating\u003c\/li\u003e\n\u003cli\u003eJet pump failing to start\u003c\/li\u003e\n\u003cli\u003eFLO\/OH watchdog system lockouts\u003c\/li\u003e\n\u003cli\u003eClearRay® indicator faults\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch2\u003e\u003cstrong\u003eRelated \/ Predecessor Components\u003c\/strong\u003e\u003c\/h2\u003e\n\u003ch3\u003e\u003cstrong\u003eBoards replaced by 6600‑623\u003c\/strong\u003e\u003c\/h3\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\u003eOld Part Number\u003c\/th\u003e\n\u003cth\u003eUsage Window\u003c\/th\u003e\n\u003cth\u003eNotes\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003e\u003cstrong\u003e6600‑846\u003c\/strong\u003e\u003c\/th\u003e\n\u003ctd\u003e04\/2017 – 10\/2023\u003c\/td\u003e\n\u003ctd\u003eFormer Dover 1‑pump board (verified via retailers) \u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003ch3\u003e\u003cstrong\u003eOther Associated Components\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cstrong\u003e780 Series topside (6600‑384\/385 family)\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003e5.5 kW heater tube assembly\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eClearRay® UV lamp\/ballast\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSensors:\u003c\/strong\u003e 6600‑167, 6600‑110 (model‑dependent)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch2\u003e\u003cstrong\u003eOrdering Notes\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eOnly fits \u003cstrong\u003e1‑Pump Sundance® 780 Dover spas built late 2023 or newer\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eNot interchangeable with any multi‑pump 780 boards\u003c\/li\u003e\n\u003cli\u003eMust match spa’s \u003cstrong\u003epump configuration\u003c\/strong\u003e and \u003cstrong\u003etopside generation\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eAll electronic spa components are \u003cstrong\u003enon‑returnable\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eIf replacing a burnt or water‑damaged PCB, verify upstream components (heater, sensors, pumps) before installation\u003c\/li\u003e\n\u003cli\u003e6600-623, 1-pump 60 HzEL '23 board for:\u003c\/li\u003e\n\u003cli\u003e11\/2023+ 780 1-pump Dover\u003c\/li\u003e\n\u003cli\u003eRevision 2.07\u003c\/li\u003e\n\u003cli\u003eExterior Light function added\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"Sundance Spas","offers":[{"title":"Default Title","offer_id":46355768967340,"sku":"6600-623","price":1159.2,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0756\/2077\/8156\/files\/6600-623.png?v=1786647955","url":"https:\/\/snowvalleyspas.ca\/products\/sundance-jacuzzi-780-series-1pump-control-board-dover-only-60-hz-2023-part-6600623","provider":"Snow Valley Spas","version":"1.0","type":"link"}