NO H2O
Hamilton Beach Water Flow Not Detected

Display shows “NO H2O” or similar message and the unit stops brewing shortly after starting.

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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

Airlock in water line, Clogged inlet screen, Failed flow sensor, Faulty pump (on pump-equipped models like FlexBrew single-serve side)

How to Fix / Troubleshooting

Safety first: Allow the unit to cool before attempting any disassembly.

Clear simple issues:

  • Fill the reservoir to the MAX line with water.
  • On single-serve FlexBrew models, ensure the pod holder is properly inserted and the lid is fully closed.
  • Run a brew cycle with just water (no coffee) to try to clear an airlock.

Check for clogs:

  • Remove the reservoir and inspect the inlet screen or filter at the base. Rinse under running water and scrub gently with a soft brush.
  • On single-serve side, remove the needle holder and clean both upper and lower needles with a straightened paper clip to remove coffee grounds.

If the NO H2O message continues and no water flows, the internal pump or flow sensor may be defective and should be serviced or replaced.

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Repair Difficulty

Medium 3/5

Required Part

Water Pump / Flow Sensor
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