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Error code reference

Samsung Dryer Error Code Ct

The internal temperature of the dryer is too low (below 32°F) or too high (over 104°F) and therefore vent blockage cannot be detected.

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What the Ct error code actually means

Your Samsung dryer is displaying Ct because it is too cold or too hot in the area where the dryer is installed, and it cannot run its automatic vent check under those conditions. This is not a broken part situation. Move the dryer to a room-temperature environment or wait for the space to warm up or cool down, and the code should clear on its own.

Diagnostic procedure

The full Ct procedure

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MyPros+ · DiagnosticsStep 1 preview
1
First diagnostic step
Leave the dryer at room temperature (41-95°F) for an hour and check again.
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Most common causes of Ct

Ranked by how often they cause this code
  1. 1Dryer located in a cold unheated space
  2. 2Dryer located in an overheated or poorly ventilated space
  3. 3Dryer recently transported from an extreme temperature environment
  4. 4Faulty ambient temperature sensor
  5. 5Wiring issue to the temperature sensor

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Questions people ask about Ct

What does Ct mean on a Samsung dryer?
The Ct code means the dryer's ambient temperature is outside the acceptable range for its vent blockage detection system to operate. The system requires temperatures between 41°F and 95°F to run accurately. If the dryer is in a space that is below 32°F or above 104°F, it will display Ct and suspend the vent check until conditions return to normal. This is a status notification, not a component failure.
Is the Ct error code on a Samsung dryer a safety issue?
The Ct code itself is not a safety hazard. It simply means the dryer has paused its vent blockage detection routine because conditions are outside the required temperature range. However, if your dryer is in a freezing space, you should be aware that operating appliances in extreme cold can stress components over time. Address the temperature issue before regular use.
How much does it cost to repair a Samsung dryer showing the Ct code?
In most cases, there is no repair cost at all since the Ct code is a temperature environment issue, not a parts failure. If the problem turns out to be a faulty temperature sensor, replacement parts and labor can range from around $50 to $200 depending on your location and whether you hire a technician. Diagnosing the sensor before ordering parts is recommended.
How do I fix the Ct error code on my Samsung dryer?
The fix is typically as simple as moving the dryer to a climate-controlled space or waiting for the room temperature to fall within the 41°F to 95°F range. Leave the dryer at room temperature for at least one hour, then power it back on and check if the code has cleared. If the code persists in a clearly normal temperature environment, the temperature sensor or its wiring may need to be inspected.
Will resetting my Samsung dryer clear the Ct error code?
A basic power reset by unplugging the dryer will not permanently clear the Ct code if the ambient temperature is still outside the acceptable range when power is restored. The code will return because the temperature condition has not changed. The code will only clear reliably once the dryer's environment returns to between 41°F and 95°F.

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