Written by
Elena Navarro Appliance Repair Content SpecialistPublished September 11, 2026Updated October 20, 2026
Error code4C
ApplianceDishwasher
Quick answer
4C is a water supply check: look for a closed valve, suspended supply, or a frozen or clogged inlet valve or line.
Model compatibility: Dacor reuses codes across series and model years, so 4C 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
4C is a water supply check.
About the 4C code
4C is a water supply check on the Modernist and Heritage 24-inch dishwashers, DDW24M99* and DDW24T99*. The display is asking you to confirm that water can reach the dishwasher.
Checks from the manual
Is the water supply valve closed?
Has the water supply been suspended?
Is the water inlet valve or line frozen, or clogged by foreign particles?
When 4C continues after those checks, contact Dacor.
More dishwasher information codes
5C covers draining, the opposite side of the water path, and 3C is the pump operation check.
Los Angeles dishwasher service
Los Angeles owners can call (310) 742-1907 for Dacor dishwasher repair. Mention 4C, your model number and which supply checks you completed.
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 Dacor appliance?
Book a specialist visit for a clear estimate and approval before any repair.
