CPC A61H 33/6005 (2013.01) [A61H 33/0091 (2013.01); A61H 33/6068 (2013.01); F24D 19/0095 (2013.01); A61H 2201/0207 (2013.01); A61H 2201/0242 (2013.01); A61H 2201/5082 (2013.01); A61H 2201/5097 (2013.01)] | 22 Claims |
1. A system for freeze protection of a spa system comprising a spa tub, a fluidic circuit comprising a controller coupled to powered components of the spa system, and the powered components of the spa system which are coupled to a mains power interface powering the powered components of the spa system and a shell supporting the spa tub, the system comprising:
a control unit coupled to a temperature sensor for enabling a heater not forming part of the powered components of the spa system when a reading from the temperature sensor received by the control unit indicates that the temperature of air within a cavity between the shell of the spa system and the spa tub has dropped below a predetermined threshold independent of a state of the fluidic circuit forming part of the spa system.
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