Display shows IC or ICE; spa may run pumps to prevent freezing and heating may be limited.

Safety first: Do not drain the spa in freezing conditions unless you can fully winterize it. Protect plumbing from ice damage.

• Verify actual water temperature: Use a separate thermometer to confirm if water is near freezing. If it is, keep the cover closed and allow the spa to run freeze protection.
• Check cover and insulation: Ensure the spa cover seals well and is not waterlogged. Replace if it cannot retain heat.
• Sensor check: If the water is warm but IC is displayed, the temperature sensor may be reading incorrectly and should be inspected and possibly replaced.
• Do not disable freeze protection: This feature prevents costly freeze damage. If IC persists in warm conditions, have a technician test the sensor and control pack.