ERR H2O

KitchenAid Insufficient Water Flow / Dry Pump Protection

Display shows an H2O-related error and brewing stops on a KitchenAid single-serve or pod-style coffee maker.

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.

Possible Causes

Empty or improperly seated reservoir, Clogged inlet screen, Scale buildup in pump or heater, Air in water line after reservoir refill

How to Fix / Troubleshooting

Check reservoir:

Fill the reservoir above the minimum line and ensure it is fully seated.
Verify there are no cracks or leaks in the reservoir that could cause loss of prime.

Clear inlet screen:

Remove the reservoir and inspect the inlet screen or filter on the machine side. Rinse under water and brush gently if clogged.

Prime the pump:

Fill the reservoir completely, then start a brew cycle without a pod or coffee.
If no water flows, stop the cycle, remove and reseat the reservoir, and try again 2–3 times to purge air.

Descale:

Run a descaling cycle to remove scale from the pump and heater.

If the H2O error persists, the pump or flow sensor may be failing and should be inspected or replaced.

Repair Difficulty

Medium 3/5

Required Part

Water Pump Assembly

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