Display shows ICE or FR, pumps may run automatically even when spa is not in use; heater may cycle frequently.

Safety first: Do not shut off power to the spa in freezing conditions unless it is fully winterized and drained.

• Confirm conditions: ICE is a protective mode. Check outside temperature and water temperature. This is normal if the spa is cold.
• Keep cover on: Ensure the Arctic Spas cover is closed and latched to retain heat. Replace damaged cover seals if heat loss is excessive.
• Verify heating: Confirm the set temperature is above freezing (e.g., 10–15°C minimum if not in use). The heater should run as needed to prevent freezing.
• Inspect sensors: If ICE appears even when water is warm, test the temperature sensor for calibration issues and replace if necessary.
• Winterization option: If you do not plan to use the spa in winter, have it professionally winterized and drained to avoid freeze damage.