Error code
DAMPER-HEATER-ERR
Meaning
The heater that prevents the air damper from freezing shut has failed
Critical
What to do
Why this happens
The issue may stem from a disconnected damper heater wire at CN40, a burned-out damper heater element, or a short or open in the heater wiring.
How to fix it
Replace the damper heater or damper assembly.
SourceSamsung service manual