Display shows EC or ECON, spa heats only during filtration cycles and may not reach set temperature quickly.

Safety: No internal access is required; adjustments are made from the control panel.

• Check mode setting: Press the Mode or Settings button on the Evolution Spas control panel until you see options like Std (Standard), EC (Economy), or SL (Sleep).
• Select Standard mode: Choose Std or equivalent to allow the spa to heat as needed to maintain set temperature.
• Monitor temperature: Allow several hours for the spa to reach the new set temperature with the cover closed.

If the spa still does not heat properly in Standard mode, there may be a heater or sensor issue requiring further diagnosis.