Error code
C8/C80
Meaning
Your dryer vent is about 80% blocked
Moderate
What to do
Why this happens
Causes may include lint buildup in ducts, damage such as crushing or kinking of exhaust ducts, or excessive bends within the duct system.
How to fix it
Clean the entire exhaust vent from the dryer to where it exits your house. Use a vent cleaning brush kit or hire a professional vent cleaning service.
SourceSamsung service manual / Customer Repair Guide