Display shows “ICE” or freeze protection icon; pumps may run automatically even when spa is not in use.

Safety: This mode is designed to protect the spa from freezing damage.

• Verify actual water temperature: Use an external thermometer to compare with the displayed temperature.
• Keep cover on: Ensure the spa cover is closed and in good condition to retain heat.
• Check heater function: Confirm the heater is operating and that the water is gradually warming.
• Sensor issue: If the water is warm but the spa remains in ICE mode, the temperature sensor may be faulty and should be replaced.