Gecko circuit boards
The circuit boards in the Gecko M-Class controllers can be replaced instead of replacing the whole controller. Replacement circuit boards are available from Gecko for all the models and are model specific.
The M-Class was used some hot tub manufactures in larger spas and swim spas, some of the hot tub brands that used this spa pack in some of there larger spa models are Older Coast Spas, some larger Arctic Spas pre-2005.
The Gecko replacement circuit boards for these units are very specific and replacement must be selected by the part and chip number to ensure proper function.