North Star Flow Restriction Through Softener

Softener causes low water pressure in the house

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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

Clogged inlet screen, Fouled resin bed, Partially closed bypass valve, Plugged distributor tube or bottom screen

How to Fix / Troubleshooting

Safety: Turn off water and depressurize the system before removing any plumbing connections.

  • 1. Check bypass: Ensure the bypass valve is fully in the Service position.
  • 2. Inspect inlet screen: Remove and clean the inlet screen or filter at the valve inlet if your North Star model has one.
  • 3. Bypass test: Place the unit in bypass. If house pressure returns to normal, the restriction is inside the softener.
  • 4. Resin and distributor: If restriction persists in service mode, the resin bed may be fouled or the distributor tube screen plugged. This typically requires replacing the resin tank media and inspecting the distributor tube and bottom screen.
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Repair Difficulty

Hard 4/5

Required Part

Inlet Screen
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