E06
AquaSoft
Position Switch / Encoder Fault
E06 displayed and the softener is stuck in backwash or brine rinse position.
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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 valve position switch, Misaligned encoder wheel, Broken position sensor wiring, Worn rotor seal causing drag
How to Fix / Troubleshooting
Safety first: Unplug the unit and close the inlet valve. Relieve pressure.
- Access position sensor: Remove the control head cover. Locate the position switch or encoder (often near the cam gear or motor shaft).
- Inspect encoder wheel: Check that the encoder wheel or cam is not cracked, loose, or rubbing against the housing. Realign or tighten as needed.
- Check sensor wiring: Ensure the position sensor harness is fully seated on both the sensor and the control board. Look for broken or frayed wires.
- Manually cycle valve: Use the manual advance knob to move the valve through all positions. If it binds, inspect the rotor and seal pack for wear or debris and replace if necessary.
- Replace sensor if faulty: If E06 persists after mechanical issues are resolved, replace the AquaSoft valve position sensor/encoder.
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Repair Difficulty
Hard
4/5
Required Part
AquaSoft Valve Position Sensor
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