Display shows ICE or FR, pumps may run automatically even when spa is off, heater may cycle to prevent freezing.

Safety first: Do not disable freeze protection in cold weather; it prevents plumbing damage.

• Verify environment: If outdoor temperatures are below freezing, this is normal behavior. Keep the spa filled and powered.
• Check cover and insulation: Ensure the Clearwater Spas cover is in good condition and properly latched to retain heat.
• Confirm water level: Low water can reduce freeze protection effectiveness; top off as needed.
• Sensor check: If ICE appears in warm weather, inspect the temperature sensor and its wiring for faults.

Persistent false freeze alerts in warm conditions indicate a sensor or control board issue that may require professional diagnosis.