Error Code C90
Your dryer vent is over 90% blocked — needs immediate cleaning
Critical
Stop using immediately - risk of damage or safety issue
Also displayed as: C90 / C9
What This Means
Severe lint buildup in exhaust duct; Heavily restricted or collapsed duct system; Outside exhaust hood blocked
What actually causes this:
Severe lint buildup in the exhaust vent is almost completely blocking airflow. This is a fire hazard.
First Thing to Check
Stop using the dryer and check the exhaust vent immediately for heavy lint buildup.
Parts Involved
How to Fix
- 1
1. Clean the lint filter
- 2
2. Check vent condition thoroughly
- 3
3. Refer to the ducting requirements section
- 4
4. Must take measures (such as cleaning) through expert personnel
This Error Applies To
Samsung DV47CG3500 Series Dryers (2024) (2024–present)
Related Error Codes
The door switch isn't working properly
Your dryer is getting the wrong type of electrical power
The vent blockage test found a problem with your exhaust
Your dryer detected restricted airflow during a vent test
The dryer thinks the door is open while running
The dryer's internal parts aren't communicating properly
Your dryer's temperature sensor isn't reading correctly
Your dryer isn't heating properly or is overheating