Zodiac pool heater is installed on a saltwater pool and shows accelerated corrosion and internal scaling.

Safety: Turn off power and gas before internal inspection. Wear gloves and eye protection when handling scale or chemicals.

• Check water chemistry: Test and adjust salt, pH, alkalinity, and calcium hardness to levels recommended by Zodiac for saltwater systems.
• Inspect bonding: Verify that the heater is properly bonded to the pool's bonding grid to reduce galvanic corrosion.
• Inspect heat exchanger: Look for scale buildup and corrosion. For salt pools, a cupronickel exchanger is recommended; confirm your model's compatibility.
• Descale professionally: Have a technician chemically descale the heat exchanger if heavy scale is present.
• Replace with salt-rated parts: If corrosion is severe, consider replacing the exchanger and affected components with Zodiac saltwater-compatible parts.