Scalemaster Exhausted or Fouled Resin Bed

Water remains hard at taps even though the Scalemaster softener appears to run normally

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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

Ion exchange resin exhausted due to incorrect hardness setting, Resin fouled by iron or manganese, Insufficient salt dosage per regeneration, Bypass valve left partially open

How to Fix / Troubleshooting

Safety first: No major hazards, but avoid opening pressurised components.

Step-by-step checks:

  • 1. Check bypass position: Ensure the Scalemaster bypass valve is fully in the "service" position, not in bypass or mid-position.
  • 2. Verify salt level and type: Confirm the brine tank has adequate tablet or block salt and that it is not bridged. Use only Scalemaster-approved salt.
  • 3. Confirm hardness setting: Compare the programmed raw water hardness with an actual hardness test. Adjust the setting so the unit regenerates often enough.
  • 4. Run a manual regeneration: Initiate a full regeneration cycle. After completion, test the outlet water hardness using a test kit.

If hardness remains high after correct settings and regeneration, the resin may be permanently fouled and require replacement by a technician.

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Repair Difficulty

Medium 3/5

Required Part

Ion Exchange Resin
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