Samsung Dishwasher Error 9C1: What It Means and How to Fix It
Short answer
9C1 on a Samsung dishwasher means: the dishwasher detected abnormal or too high supply voltage and entered protection mode – often after a power outage, surge or tripped breaker. First step: Check the socket/line, power cord and connection.
Abnormal or high mains voltage
How to fix it
- 1Check the socket/line, power cord and connection.
- 2If a surge/trip happened beforehand: switch off at socket/breaker, wait at least 1 minute, switch on and start a normal cycle.
- 3Plug into a dedicated, sound socket (no extension cable, multi-plug or other big loads such as heaters or dryers on the same circuit).
- 4If the code persists, contact Samsung customer service.
When to call a professional: If the code stays on a clean supply – Samsung Support.
Applies to: Samsung dishwashers with a digital display
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Source
Based on Samsung's official error code information: Samsung CH (DE) – Was bedeuten die Fehlercodes, die mein Geschirrspüler anzeigt?. Last checked 2026-10-28. Codes and their meaning can differ by model and region; check your appliance's manual.
Frequently asked questions
What does Samsung dishwasher error code 9C1 mean?
The dishwasher detected abnormal or too high supply voltage and entered protection mode – often after a power outage, surge or tripped breaker.
How do I fix 9C1 on a Samsung dishwasher?
Check the socket/line, power cord and connection. If a surge/trip happened beforehand: switch off at socket/breaker, wait at least 1 minute, switch on and start a normal cycle. Plug into a dedicated, sound socket (no extension cable, multi-plug or other big loads such as heaters or dryers on the same circuit). If the code persists, contact Samsung customer service.
When should I call a technician for 9C1?
If the code stays on a clean supply – Samsung Support.