E10
Rayne Memory / Backup Power Fault

E10 error and display time resets or loses settings frequently

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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

Failed onboard memory on Rayne PCB, Weak or missing backup capacitor/battery, Frequent power interruptions, Corroded board traces

How to Fix / Troubleshooting

Safety first: Disconnect power before removing the control cover.

  • 1. Check outlet stability: Ensure the softener is plugged into a non-switched, reliable outlet. Avoid plugging into circuits that are frequently turned off.
  • 2. Inspect control board: Remove the cover and look for corrosion or moisture on the PCB. Dry gently if minor condensation is present and correct any water intrusion sources.
  • 3. Reprogram settings: Set the correct time and hardness, then monitor whether they are retained after a brief power loss.

When to call a technician: Persistent E10 or loss of settings indicates a failing control board or backup component, which should be replaced by a professional.

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Repair Difficulty

Medium 3/5

Required Part

Rayne main control board (PCB)
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