Tier1 Restricted Drain Flow

Drain line discharges very little or no water during regeneration.

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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

Kinked or blocked drain hose, Clogged drain flow control (DLFC), Sediment buildup in valve drain port, Frozen drain line in cold climates

How to Fix / Troubleshooting

Safety first: Shut off water and relieve pressure before disconnecting the drain line.

  • Inspect drain hose: Follow the hose from the valve to the drain. Straighten any kinks and clear obstructions at the drain connection.
  • Check for freezing: In cold climates, ensure the drain line is not exposed to freezing temperatures. Thaw gently if frozen and insulate or reroute.
  • Clean DLFC button: Remove the drain flow control (DLFC) from the valve and clean any debris. Verify the orifice is clear.
  • Flush valve drain port: With the DLFC removed, briefly open the inlet valve to flush the drain port (direct water to a bucket). Reinstall the DLFC and hose.
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Repair Difficulty

Medium 3/5

Required Part

Tier1 drain flow control (DLFC) button
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