AFWFilters
Valve indexing failure
Softener stuck in regeneration and does not return to service 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
Stripped cam gear, Seized piston, Failed drive motor, Obstructed valve body with debris or resin
How to Fix / Troubleshooting
Safety: Immediately place the unit in BYPASS to restore water to the home, then unplug the softener.
- Inspect drive assembly: Remove the control valve cover and examine the cam gear and motor. Look for broken teeth, loose set screws, or a motor that is hot and not turning.
- Check piston movement: With power off, attempt to rotate the cam by hand. If it will not move, remove the piston and seal assembly and inspect for swelling, scoring, or foreign material.
- Clean valve body: Flush any resin beads or debris from the valve body. Replace the piston and seal kit if damaged.
- Replace motor or cam: If the motor does not run when powered or the cam gear is stripped, replace the defective component with AFWFilters-compatible parts.
- Test: Reassemble, take the unit out of bypass, and run a full manual regeneration to confirm proper indexing.
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Repair Difficulty
Hard
4/5
Required Part
Control Valve Piston & Drive Motor
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