Reviewed by Marcus Hale · Last reviewed August 24, 2026
Written by
Marcus Hale Appliance Repair Content SpecialistPublished August 18, 2026Updated August 24, 2026Technically reviewed August 24, 2026
Error codeU1
ApplianceDishDrawer
Affected model seriesdishdrawer-phase5
Quick answer
a water-fill timeout / no-water condition
Model compatibility: DCS reuses codes across series and model years, so U1 may mean something different on another appliance or generation. Confirm this against your model’s documentation and record your full model number before acting.
Plain language
What this code means
a water-fill timeout / no-water condition
Important safety warning. Do not attempt repairs involving electrical components, gas, water lines, refrigerant or sealed systems. Unplug the appliance if it is safe to reach the outlet, and leave internal diagnostics to a qualified technician.
Seeing this code on your DCS appliance?
Book a specialist visit for a clear estimate and approval before any repair.
It indicates a water-fill timeout / no-water condition. The code identifies the system that needs attention, but it does not prove that one specific part must be replaced.
A single controlled restart is reasonable when the user guide permits it. If the message returns, repeated resets will not correct an underlying component, wiring, installation, or control issue.
If the code remains after the safe checks above, or the appliance cannot operate normally, professional diagnosis is recommended.
References
Sources & references
DCS DD124P5/DD224P5 Phase 5 documentation
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