Certikin Chemical Corrosion / Electrolysis Damage

Corrosion or green/blue staining on pipework and around the Certikin heater connections.

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Safety Warning

This repair may involve working with high voltage components or water connections. Always unplug the appliance before removing any panels.

If you are not confident in your ability to perform this repair safely, we strongly recommend contacting a professional technician.

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Possible Causes

Incorrect pool water chemistry (low pH, high chlorine), Stray electrical currents due to poor bonding, Use of incompatible metals in Certikin heater connections, Continuous condensation on fittings

How to Fix / Troubleshooting

Safety first: Isolate power before touching corroded electrical bonding points.

  • Test water chemistry: Check pH, alkalinity, and chlorine levels and adjust to manufacturer-recommended ranges.
  • Inspect bonding: Ensure the heater and associated metal pipework are correctly bonded to the pool’s equipotential bonding system.
  • Dry area: Improve ventilation to reduce condensation around the heater.
  • Replace damaged fittings: Severely corroded unions or fittings should be replaced with compatible materials.

Ongoing corrosion issues may require a pool professional to review water treatment and bonding arrangements.

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Repair Difficulty

Medium 3/5

Required Part

Certikin heater unions / bonding connections
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