Amfa4000 Iron Fouling / Contamination

Visible rust or discoloration in softened water from Amfa4000

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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

Iron-fouled resin bed, High iron content in source water without pre-treatment, Corroded internal metal fittings, Bacterial growth in brine tank

How to Fix / Troubleshooting

Safety first: Do not drink discolored water until the cause is identified. Use gloves when handling chemicals.

  • 1. Test raw water for iron: Use an iron test kit on water before the Amfa4000. If high, consider installing an iron filter ahead of the softener.
  • 2. Clean resin with iron remover: Use a resin cleaner compatible with the Amfa4000 and follow instructions to remove iron deposits.
  • 3. Sanitize brine tank: Empty the brine tank, clean with a mild bleach solution, rinse thoroughly, and refill with fresh salt and water.

Severely fouled resin may need replacement if cleaning does not restore clear water.

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Repair Difficulty

Medium 3/5

Required Part

Amfa4000 Cation Resin Bed
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