Aquasana Incorrect Plumbing / Bypass Misconfiguration

Aquasana softener installed but water bypasses the unit (no softening effect at any time)

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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 lines reversed, Bypass valve left in BYPASS position, Cross-connection around Aquasana system, Incorrect installation of tees and valves

How to Fix / Troubleshooting

Safety first: Shut off main water supply before altering plumbing. Depressurize by opening faucets.

Steps to correct bypassing:

  • 1. Check bypass position: Verify the Aquasana bypass valve is in SERVICE, not BYPASS.
  • 2. Confirm flow direction: Inspect the control head for IN and OUT markings and ensure plumbing matches.
  • 3. Look for cross-connections: Ensure no additional piping allows water to bypass the softener.
  • 4. Correct plumbing: If lines are reversed or mis-plumbed, have a qualified plumber re-pipe the connections.
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Repair Difficulty

Medium 3/5
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