Dishwasher displays U1; unit may not start and may indicate a water supply issue.

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

Low household water pressure, Partially closed shutoff valve, Clogged inlet screen, Kinked inlet hose

Safety first: Turn off power and water before disconnecting hoses.

Check water pressure: Confirm strong flow at the kitchen faucet.
Verify shutoff valve: Ensure the under-sink valve is fully open.
Inspect inlet hose: Look for kinks or crushing behind the dishwasher.
Clean inlet screen: Disconnect the inlet hose at the dishwasher and clean the screen inside the valve.
Test operation: Restore water and power and run a cycle. If U1 persists, the inlet valve may be weak and should be replaced.

Medium 3/5

Water Inlet Valve

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