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Freeze Protection If the temperature sensors detect a drop to below 44.F/6.7.C within the heater, the pump will automatically activate to provide freeze protection. The equipment stays on until 4 minutes after the sensors detect that the spa temperature has risen to 45.F/7.2.C or higher. 9 Spa Maintenance The maintenance and care of your spa is simple and easy to carry out, and if performed regularly as scheduled, problems will be minimal. It is important that the following procedures be read th