E15
Tapworks Configuration / Parameter Memory Fault

E15 error and the unit indicates configuration or parameter error after power‑up

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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

Corrupted EEPROM on control PCB, Incorrect model configuration, Power surge during programming, Faulty control board

How to Fix / Troubleshooting

Safety: Unplug the softener before servicing the control.

  • Factory reset: Follow the Tapworks service instructions to perform a factory reset of the control parameters. This often involves holding specific buttons during power‑up.
  • Re‑enter settings: After reset, carefully reprogram time, hardness, regeneration type, and capacity according to the installation manual and your model number.
  • Check for surges: If E15 occurred after a storm or outage, consider adding a surge protector to the power supply.
  • If E15 reappears after correct programming: The non‑volatile memory on the control PCB is likely defective. Replace the Tapworks control PCB.
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Repair Difficulty

Hard 4/5

Required Part

Tapworks Control PCB
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