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The 6600-289 circuit board with is used for revision beginning with 5 in spas without a circulation pump.
The 6600-289 revision 5.57+ is used for the following Sundance Spa models:
We have extensive experience with Sundance Spas and will be happy to answer any questions you have please email or call us today.
Manufacturer: Sundance Spas Manufacturer Number: 6660-289 Manufacturer Warranty: 1 year parts.