Error code reference

Samsung Dishwasher Error Code E3

During non-fill periods, the quantity of water measured by flow-meter exceeds 2L, indicating a water inlet valve breakdown (e.g., foreign substance blocking valve closing); also triggers when heater fails to reach required temperature within 60 minutes or fails to increase water temperature over 7°C in 10 minutes.

SourceSamsung Dishwasher - Service Manual: Error Codes & Test Mode (DM-M39AHC, DM-M59AHC)p. 4-1

Diagnostic procedure

The full E3 procedure

Step 1 is visible so you can confirm you are on the right page. The remaining steps, the ones that tell you whether to actually replace a part, unlock with any pass.

MyPros+ · DiagnosticsStep 1 preview
1
First diagnostic step
Check the connections of the heater connectors or check for inlet valve breakdown.

SourceSamsung Dishwasher - Service Manual: Error Codes & Test Mode (DM-M39AHC, DM-M59AHC)p. 4-1

More steps, wiring diagram references, and verified part numbers
Includes expected resistance and voltage values, connector pinouts, and supersession notes for replacement parts.
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