Err dAtA
Autotrol
Configuration or memory corruption
Display shows “Err dAtA” or “Data Err” and control is unresponsive or stuck
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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
Power surge, Static discharge, Failed EEPROM on control board
How to Fix / Troubleshooting
Safety: Disconnect power before servicing the control.
- Factory reset: Perform a full factory reset according to the Autotrol manual. This will clear corrupted settings.
- Reprogram: Re-enter all installer parameters (hardness, capacity, meter type, regeneration time, etc.).
- Observe operation: If the error reappears after a reset, the memory on the control board is likely failing.
- Replace control: Install a new Autotrol electronic control board and program it to match your system.
- Surge protection: Use a surge protector to reduce the risk of future data corruption.
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Repair Difficulty
Medium
3/5
Required Part
Autotrol electronic control board
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