Samsung groups 9C1, 9C2, UC, PF, and related displays as voltage or power-supply errors. A recent outage or tripped breaker may explain one occurrence.
What 9C / UC means
Samsung groups 9C1, 9C2, UC, PF, and related displays as voltage or power-supply errors. A recent outage or tripped breaker may explain one occurrence.
What you may notice
- The washer stops after an outage
- The breaker trips
- The display shows PF, UC, or 9C
- The code returns at startup
Most likely causes
- 01A recent power interruption
- 02An extension cord or power strip
- 03An overloaded or incorrect circuit
- 04Loose receptacle contact
- 05An internal electrical fault
Safe checks, in order
Start with the simplest non-invasive check. Stop as soon as the error clears; repeated resets can hide a condition without correcting it.
Disconnect power
Unplug the washer and wait one minute.
Remove adapters
Connect the washer directly to its properly grounded receptacle, never an extension cord.
Check the breaker
Reset a tripped breaker once only after checking for obvious water or cord damage.
Retry empty
Run a short empty cycle and stop if the code or breaker trip returns.
Know where to stop
Do not open electrical panels, test live voltage, replace cords, or defeat grounding unless qualified. Repeated breaker trips require investigation.
When to call a technician or support
Use a licensed electrician for circuit or receptacle concerns and appliance service for a persistent code on a verified correct supply.
When you call, have the exact product or vehicle model, model year where relevant, the complete code or symbol, and when it appeared.
Where this information came from
We use the manufacturer's current published guidance as the starting point, then organize it into a safer, beginner-friendly sequence.
Samsung Support — washing machine information and error codes Source last checked August 16, 2026. Manufacturer instructions and model manuals take priority over this independent summary.