On the covered Samsung dryer platform, Clg, Cg, C80, C8, C90, C9 means vent blockage test result: the vent is clogged. Samsung says these codes appear only after a Vent Blockage test has been run. First, clean your lint filter and your exhaust vent.
Differential
Likely causes of “Samsung dryer code Clg, Cg, C80, C8, C90, C9”, and how to tell them apart
- 1
A lint filter or lint filter compartment that is dirty
What separates it The filter looks coated and the drum feels slow to dry
How to confirm Clean the lint filter before or after every load and clear the compartment with a pipe cleaner, as Samsung says
- 2
A clogged exhaust vent
What separates it The vent blockage test returns Clg, Cg, C80, C8, C90 or C9
How to confirm Samsung says C8 or C80 means about 80 percent clogged and C90 or C9 over 90 percent, and the vent must be cleaned
- 3
A vent that fails the manual's requirements
What separates it The vent is long, foil, plastic or has many turns
How to confirm Samsung says the vent must be sealed, not plastic or foil, and every 90 degree turn cuts the maximum length by 6 feet
Before you touch a setting
Record this first — changing settings destroys the evidence
- The exact characters shown on the display: Clg, Cg, C80, C8, C90 or C9
- Whether the code came from the vent blockage test
- How long the exhaust run is and how many turns it has
Try in this order
0 of 7 completedWhat to do first
ReversibleClean your lint filter and your exhaust vent.
Correct only the documented fault domain
ReversibleSamsung's instruction for the vent-blockage results is to clean the lint filter and the exhaust vent, then run the test again.
Run the vent blockage test correctly
ReversibleEmpty the drum, close the door, press Power, and within 5 seconds hold Adjust Time Up + Dry Level until InS or In appears, then hold Start/Pause; the test lasts about 2 minutes, so do not open the door. If that combination fails, try Cycle 1 + Wrinkle Prevent or Air Fluff + Wrinkle Prevent.
Read the result
ReversibleA result of 0 or End means the duct is normal; Clg, Cg, CL9, C9, C80, C8 or C90 means the duct cannot exhaust properly. Results stay on the display for about 5 minutes.
Clean the lint filter
ReversibleClean the lint filter before or after every load and use a pipe cleaner to clear its compartment; never run the dryer without the filter or with a damaged one.
Clean the exhaust vent
ReversibleSamsung recommends a professional vent cleaning service once or twice a year. To do it yourself, turn off the gas and unplug the dryer, take the outside cover off and clear lint, undo the clamp on the duct, run a brush kit on a drill clockwise through the whole vent, check the duct for damage, vacuum out lint and reconnect.
Check a model without the test
ReversibleDisconnect the vent, run a Time Dry cycle of at least 30 seconds with Eco Dry off, and feel for hot air; if the dryer is hotter with the vent disconnected, the vent is clogged or does not meet the manual's requirements.
Model-specific
What is true of this model and not of its siblings
- Displayed as
- Clg, Cl9, Cg, C9, C80, C8, C8o, C90, C9o.
- Parts named
- Lint filter; exhaust vent; vent duct.
Stop boundary
When this stops being a self-service repair
- !Turn off the gas and unplug the dryer before you disconnect the vent
- !Stop using a dryer that reads over 90 percent clogged; a blocked vent is a fire risk
Evidence ledger
Sources behind this answer
Where the manufacturer's article stops. Samsung's C80 and C90 codes are severity levels of the same condition, so they share this page.
Exact questions
Common questions
What does Clg, Cg, C80, C8, C90, C9 mean on a Samsung dryer?+
Vent blockage test result: the vent is clogged. Samsung says these codes appear only after a Vent Blockage test has been run.
Do the codes appear without running the test?+
No; Samsung says they appear only after a Vent Blockage test.
Does a 0 result mean the vent is fine?+
It means the duct is normal, but you should still clean the vent once or twice a year.
Why is the test not working?+
The dryer must be cool and empty; run Air Fluff for several minutes after installation to cool it.