Display shows ICE or IC and pumps run periodically even when spa is not in use.

Safety first: Ensure the spa remains powered during freezing weather to prevent damage.

• Keep cover on: Maintain the Coast Spas cover in good condition and closed to retain heat.
• Verify water level: Low water can reduce freeze protection effectiveness; top up as needed.
• Check sensor accuracy: Compare displayed temperature to an external thermometer. Replace the sensor if readings are inaccurate.
• Do not shut off power: Allow the spa to cycle pumps as designed to prevent frozen plumbing.