North Star
No Drain Flow During Regeneration
Softener appears to regenerate, but drain line is dry
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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
Blocked drain line, Clogged drain flow control, Valve not shifting to backwash/rinse positions, Drain line frozen
How to Fix / Troubleshooting
Safety: Unplug the unit and place it in bypass before disconnecting the drain line.
- 1. Inspect drain hose: Check for kinks, clogs, or ice (in cold climates). Clear or thaw as needed.
- 2. Clean drain flow control: Remove the drain line fitting and clean the drain flow control orifice of debris.
- 3. Test valve operation: During a manual regeneration, listen for valve movement when entering backwash and rinse. If no movement, inspect the valve drive motor and gears.
- 4. Re-route drain: Ensure the drain line has proper slope and is not submerged in standing water, which can cause backpressure.
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Repair Difficulty
Medium
3/5
Required Part
Drain Flow Control
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