Sterling Water Incorrect Plumbing / Cross-Connection

Softener installed but water remains untreated; bypass appears to be in service

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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

Inlet and outlet reversed, Bypass installed backwards, House plumbing tied in before softener outlet

How to Fix / Troubleshooting

Safety: Shut off water and depressurize before altering plumbing. If unsure, contact a licensed plumber.

Steps:

  • 1. Verify flow direction: Check arrows on the Sterling valve body for IN and OUT. Confirm plumbing matches.
  • 2. Check bypass orientation: Ensure the bypass valve is installed in the correct direction and in SERVICE position.
  • 3. Inspect house tie-ins: Confirm that all fixtures intended to be softened are connected after the softener outlet.
  • 4. Correct plumbing: Re-pipe as necessary so that all desired fixtures receive water from the softener outlet.
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Repair Difficulty

Hard 4/5
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