Error code
Samsung Dishwasher Error Code AC
Samsung Dishwasher AC usually means the dishwasher has detected a communication or control fault. Try one safe power reset, then stop if it returns.
Quick answer
AC: what does it mean and how to fix
What does it mean?
the dishwasher has detected a communication or control fault.
How to fix first
Switch the dishwasher off at the wall or breaker.
Why is this happening?
Temporary control communication interruption
When should I call an engineer?
Call an appliance engineer if AC returns after one reset, the dishwasher is unresponsive, or diagnosis would require access to internal controls or wiring.
What does this error code mean?
Samsung dishwasher error code AC usually points to a control communication problem. The appliance may power on but fail to start, stop mid-cycle, or become unresponsive.
A power cycle may clear a temporary interruption. If AC returns, internal controls or wiring may need professional diagnosis.
AC relates to electronic control communication, power interruption, and internal wiring or board communication.
Symptoms users may notice
- The dishwasher may power on but refuse to run.
- Buttons may not respond normally.
- The code may appear after a stopped or interrupted cycle.
Why is this happening?
- Temporary control communication interruption
- Door opened or power interrupted mid-cycle
- Control board or wiring communication fault
- Moisture or installation movement affecting connections
What this usually points to
AC relates to electronic control communication, power interruption, and internal wiring or board communication.
How to fix this safely
- Switch the dishwasher off at the wall or breaker.
- Wait at least one minute before restoring power.
- Try one restart only if the controls respond normally and there is no leak.
- Stop if AC returns or the panel remains unresponsive.
Can I fix this myself?
MaybeYou can try one safe power cycle and check the door is closing normally. Repeated AC warnings need diagnosis.
Safety boundary: Do not remove panels, dry internal electronics, or work on wiring yourself.
What not to do
- Do not keep cycling the power repeatedly.
- Do not remove panels to inspect control boards.
- Do not ignore signs of water near electrical areas.
Reset steps
- Power off at the wall or breaker for at least one minute.
- Power back on and try one normal programme.
- Stop if AC returns.
Intermittent vs persistent faults
A one-off AC warning may clear after a reset, but repeated AC is a persistent control fault risk.
When to call an engineer
Call an appliance engineer if AC returns after one reset, the dishwasher is unresponsive, or diagnosis would require access to internal controls or wiring.
Safety warning
Disconnect the dishwasher from power before any accessible checks, and do not open the appliance cabinet or touch internal wiring.
Useful hub links
Related power and control fault codes
Samsung Dishwasher Error Code 3C
the dishwasher fills but cannot begin active washing properly.
Samsung Dishwasher Error Code bC2
the control panel thinks a button is stuck or being held.
Samsung Dishwasher Error Code PC
the dishwasher has detected a programme or option-control fault.
Samsung Dishwasher Error Code HC
the dishwasher has detected an overheating or high-temperature condition.
Relevant guide
Frequently asked questions
What does Samsung dishwasher AC mean?+
Samsung Dishwasher Error Code AC usually means the dishwasher has detected a communication or control fault.
Will resetting clear Samsung dishwasher AC?+
A temporary interruption may clear after one safe power cycle, but repeated AC needs diagnosis.
Can I still use a Samsung dishwasher with AC?+
Do not keep using it if AC returns or the controls behave unpredictably.