Error code
13C
Meaning
Humidity sensor is disconnected or out of range
Moderate
What to do
Why this happens
Potential issues include a loose or disconnected CN40 humidity sensor connector, absence of 5V supply to the sensor, output outside the normal range of 1V–4V, or a faulty HTG3515CH/HTG3535CH sensor.
How to fix it
Reconnect the sensor connector; replace the humidity sensor if the output voltage is outside 1V–4V.
SourceSamsung service manual