Error code reference

Samsung Dishwasher Error Code HC4

Drying duct temperature is 102 degrees or higher for 3 consecutive seconds when drying duct temperature sensor is not within inspection range; cycle stops.

SourceSamsung DW80B Series Dishwasher - Service Manualp. 48

Diagnostic procedure

The full HC4 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
Refer to Dishwasher Inspection Mode - (HC4) Dry Heater Overheat Check specifications.

SourceSamsung DW90F8 Series Dishwasher - Full Service Manualp. 90, 92

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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