Error Code C9
Your dryer vent is over 90% blocked — needs immediate cleaning
Critical
Stop using immediately - risk of damage or safety issue
Also displayed as: C9 or C90
What This Means
Severe lint buildup in exhaust duct; Completely blocked or crushed exhaust duct; Outside exhaust hood sealed or stuck closed
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 thoroughly
- 2
2. Disconnect and clean the entire exhaust vent system
- 3
3. Inspect the full duct run for blockages
- 4
4. Verify outside exhaust hood opens freely
- 5
5. Consider replacing ductwork if severely restricted
- 6
6. Rerun the Smart Install vent blockage test
Other Error Codes for DVE55CG7105DAC
Your dryer's temperature sensor isn't reading correctly
A secondary temperature sensor is giving bad readings
The door switch isn't working properly
The dryer thinks the door is open while running
Your dryer detected restricted airflow during a vent test
Your dryer is getting the wrong type of electrical power
The dryer's internal parts aren't communicating properly
Your dryer vent is about 80% blocked