Samsung dryer Ct: The vent test temperature is unsuitable

Documentation checkedBy ErrHiveUpdated October 28, 2026

THE SHORT ANSWER

The vent test temperature is unsuitable.

Ct means the dryer is too cold or too hot for the vent test. Let it return to room temperature before trying again.

First safe check

Check whether the dryer has just run or is in a very cold space.

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 Ct.

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.

Allow temperature to settle
Leave the dryer at room temperature for an hour before repeating the test.
What to note
The test starts under appropriate conditions.
Retest an empty drum
Follow the owner manual’s vent-test procedure. A recurring Ct at normal room temperature needs service.
What to note
The test produces a valid airflow result.

THE DETAILS MATTER

Scope & troubleshooting notes

How to interpret this result

Ct is a test-condition message, not a diagnosis that the thermostat needs replacing. A test that cannot run is also not evidence that the exhaust passed.

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
Run a Vent Blockage test on your Samsung dryer
Samsung · Manufacturer support · Checked Oct 28, 2026
Test preparation and results — Samsung US consumer support; check the model manual before applying a procedure.
Clothes are not dry after a Samsung dryer
Samsung US · Manufacturer support · Checked Oct 28, 2026
Vent test results; HC; 9C1 — Samsung vented dryers with the relevant test

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.