Samsung dryer AC: Internal communication warning

Documentation checkedBy ErrHiveUpdated October 28, 2026

THE SHORT ANSWER

Internal communication warning.

AC means dryer components are not communicating correctly. A single documented power cycle is the owner-level check.

First safe check

Photograph the complete display before clearing it.

Applies to

Samsung dryer families covered by the cited US guidance. Match the full model number and exact display; this is not an exact-model compatibility claim.

Before you start

Do not bypass the door switch, run with disconnected exhaust, or open electrical or gas components. Stop for smoke, scorching, or a gas odor.

Go to safe checks

WHAT YOU MAY NOTICE

Symptoms to record

The dryer displays AC.

WORK THROUGH THE BASICS

Safe troubleshooting checks

0 of 2 checked

Use the checkboxes to keep track as you read. Stop at any warning or step that does not match your appliance.

Cycle power once
Switch the dryer off for 60 seconds, then restore power.
What to note
The control can initialize again.
Preserve a repeated warning
If AC returns, stop resetting and arrange service with the original code details.
What to note
Fault history is available for diagnosis.

THE DETAILS MATTER

Scope & troubleshooting notes

How to interpret this result

This is a communication problem inside the appliance. It is not automatically a Wi-Fi error, and reconnecting SmartThings is not a substitute for the service threshold.

YOUR NEXT DECISION

When to stop and get help

Arrange Samsung service if the condition remains after the listed owner checks, or if damage prevents completing them safely.

Record what you see

Keep the full model number, exact displayed code, and your observations together for the next conversation.

Use the right support

Contact the manufacturer or a qualified appliance technician when the guide calls for service.

Samsung support

THE EVIDENCE

Sources & verification

Our explanations are editorial summaries of the documentation below. They do not replace the instructions for your exact appliance.

Samsung dryer error codes
Samsung US · Manufacturer support · Checked Oct 28, 2026
Heating errors; temperature errors; voltage errors — Samsung US dryers; codes vary by model
How to reset your Samsung dryer
Samsung · Manufacturer support · Checked Oct 28, 2026
When to reset and when not to — Samsung US consumer support; check the model manual before applying a procedure.
Samsung Tumble Dryer error codes - what do they mean?
Samsung · Manufacturer support · Checked Oct 28, 2026
Temperature, motor, frequency and voltage groups — Samsung UK corroboration only for conditions independently listed by Samsung US; heat-pump-only actions are not transferred to vented US dryers.
Samsung Dryer Information Codes
Samsung · Manufacturer support · Checked Oct 28, 2026
Other information codes — Samsung Australia corroboration of shared diagnostics; no foreign electrical values or internal repair instructions transferred.

ErrHive is an independent information resource, not an authorized representative of Samsung. Follow your appliance’s manual. Hazardous repairs belong with qualified professionals. Read our safety policy.