Error code
tC
Meaning
The water temperature sensor is not reading correctly
Moderate
What to do
Why this happens
The issue may be due to a disconnected thermistor terminal, a defective thermistor (either open circuit or shorted), damage in the wiring harness between the thermistor and Main PBA, or a defect in the Main PBA.
How to fix it
This one needs a professional technician
SourceSamsung service manual