Whirlpool Pro Series Incorrect Plumbing or Bypass Configuration

Softener installed but water bypasses the unit; no change in hardness

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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 valve left in bypass, Cross-connection in plumbing, Mis-installed bypass kit

How to Fix / Troubleshooting

Safety: Shut off water and relieve pressure before altering plumbing. Unplug the unit if moving or rotating it.

Steps:

  • Verify bypass position: Ensure the bypass valve is fully in the service position according to the markings on the valve.
  • Check inlet/outlet: Confirm the house supply is connected to the softener inlet and the house plumbing is connected to the outlet. Whirlpool Pro Series valves are directional.
  • Inspect for cross-connections: Look for any tees or valves that might allow untreated water to mix with softened water.

Resolution: Correct any plumbing errors. If the bypass assembly is damaged or mis-installed, replace the bypass valve assembly with the correct Whirlpool Pro Series part.

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Repair Difficulty

Medium 3/5

Required Part

Bypass Valve Assembly
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