Error code
9C1
Meaning
Your dryer is getting the wrong voltage from the outlet
Critical
What to do
Why this happens
Possible causes include under or over voltage supplied to the dryer, use of a plug receptacle causing voltage drop through an extension, a main PBA fault, or momentary low voltage on a connecting wire over 1m resulting in up to a 10V drop.
How to fix it
Make sure the power cord is firmly plugged in and the breaker is on. If the error persists, you may have a wiring issue — have an electrician check the outlet.
SourceSamsung service manual / Customer Repair Guide