Corrosion or rust visible on metal parts of the heater, especially near water connections.

Safety first: Turn off power and close water valves before working near corroded areas.

• Correct water chemistry: Test and adjust pool water pH, alkalinity, and chlorine levels to within recommended ranges.
• Clean and treat rust: Remove loose rust from affected areas and apply a suitable anti‑corrosion primer and paint.
• Redirect condensate: Ensure condensate drains away from metal components and does not drip on the frame.
• Inspect titanium heat exchanger: If corrosion is near water connections, check for leaks and replace gaskets or unions as needed.