E6
Water2Buy Keypad / User Interface Fault

E6 error and display is frozen or unresponsive to button presses

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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

Damaged keypad membrane, Moisture ingress into display panel, Loose ribbon cable between keypad and PCB, Shorted front panel board

How to Fix / Troubleshooting

Safety first: Disconnect the power adapter before removing the front panel.

  • Visual inspection: Remove the control cover and inspect the keypad ribbon cable connection to the main PCB. Reseat the connector firmly.
  • Check for moisture: Look for condensation or water tracks on the inside of the display window. Dry thoroughly and improve sealing if the unit is installed in a very damp location.
  • Test buttons: After drying and reseating cables, reconnect power and test each button. If some or all buttons remain unresponsive, the keypad membrane is likely faulty.
  • Replace keypad/front panel: Order the correct Water2Buy front panel or full control head. Transfer settings from the old unit if possible, or reprogram according to the manual.
  • Prevent recurrence: Ensure the softener is not directly exposed to splashing water or steam and that the control cover is properly sealed.
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Repair Difficulty

Medium 3/5

Required Part

Water2Buy keypad / front panel
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