Why can't I filter without heating the Vita Premium, but I can heat without filtering?

The Vita Premium is configured to allow heating independently of filtration. This means you have the flexibility to heat the water without the need for filtration. However, filtration cannot be activated without heating.

How does filtration work in relation to water temperature?

Filtration time depends on the water temperature in your spa. Here's how it works:
- If the water temperature is above 28°C, filtration will run continuously, 24 hours a day.
- If the water temperature is below 28°C, the filtration time will be equal to half the selected temperature. For example, if you select a temperature of 30°C, filtration will run for 15 hours a day.