For the Samsung Dryer families covered by the source set, **1tCS** means **temperature / temperature-sensor error**. The first useful step is to preserve the exact characters and model number before power cycling the appliance. The exact stage when the code appears can be as important as the characters themselves. Note whether it happens at startup, during fill, heating, cooling, draining, spinning, drying, or after a power event. The recorded display form is **1tCS**. Search normalization stores it as **1TCS** while preserving the characters a homeowner actually sees.
Reviewed by Ethan Mercer · Last reviewed August 17, 2026
Written by
Ethan Mercer Appliance Repair Content SpecialistPublished August 17, 2026Updated August 22, 2026Technically reviewed August 17, 2026
Content status:
Verified
Error code1TCS
ApplianceDryer
Quick answer
Temperature / temperature-sensor error.
Model compatibility: Samsung can reuse or reformat codes across series and model years, so 1TCS may mean something different on another appliance or generation. Confirm this against your model’s documentation and record your full model number before acting.
Plain language
What this code means
For the Samsung Dryer families covered by the source set, **1tCS** means **temperature / temperature-sensor error**. The first useful step is to preserve the exact characters and model number before power cycling the appliance. The exact stage when the code appears can be as important as the characters themselves. Note whether it happens at startup, during fill, heating, cooling, draining, spinning, drying, or after a power event. The recorded display form is **1tCS**. Search normalization stores it as **1TCS** while preserving the characters a homeowner actually sees.
Signs
Symptoms you may notice
While 1tCS is active, the control can stop or limit operation because a temperature reading is missing or implausible.
On affected Samsung dryer models, heating, cooling, drying, or defrost behavior can become inconsistent.
One clue that supports the 1tCS diagnosis is that the display can return at a similar stage each time the affected sensor is checked.
A symptom that fits 1tCS is that 1tCS appears and drying can pause or performance may change because of temperature / temperature-sensor error.
On affected Samsung dryer models, heat, airflow, motor, drainage, door, or sensor behavior may be affected depending on the code family.
Why it happens
Possible causes
varies by model/region — cross-region baseline — Temperature / temperature-sensor error
Before you call
Safe checks you can make
These are simple, non-hazardous checks only. If anything is unclear, stop and contact a technician.
As an external check for 1tCS, record when the code appears and whether the appliance had just heated, cooled, or defrosted.
With 1tCS recorded, confirm vents, doors, filters, and ambient conditions are normal where they affect the sensor reading.
To rule out an accessible cause, use the exact model manual before assuming the sensor itself is defective.
Before requesting service for 1tCS, record the code and whether the dryer is vented or heat-pump/ventless.
With 1tCS recorded, clean/inspect lint filter, heat exchanger, water tank/drain, and external vent only when relevant.
Before requesting service for 1tCS, stop repeated resets if the code returns; model-specific electrical/refrigeration diagnosis may be required.
Important safety warning. Safety takes priority over clearing 1tCS. Stop for burning smell, smoke, gas odor, repeated breaker trips, or abnormal overheating. Do not bypass thermal protection.
Get help
When to request repair service
Persistent temperature-sensor codes usually require resistance/connection checks at the sensor, harness, and control—work best done with the model-specific service procedure. A repeatable 1tCS event is more useful diagnostically than repeated resets, because it shows when the temperature / temperature-sensor error check is failing.
Book your repair
Seeing this code on your Samsung appliance?
Book a specialist visit for a clear estimate and approval before any repair.
A single documented power reset can help after an external condition or power event is corrected. If **1tCS** returns at the same stage, repeated resets only erase useful evidence and do not repair the cause.
Continue only if the appliance is otherwise safe and the owner-level checks are appropriate. Stop for leakage near electrical parts, smoke, burning odor, arcing, gas concerns, repeated breaker trips, uncontrolled heating, or unsafe temperatures.
Not automatically. Samsung error codes are diagnostic indicators, not part numbers. Confirm the circuit around **1tCS** before replacing anything.
The same-looking code can be reused on another Samsung appliance family or reformatted by region/model year. Match the appliance type and exact model before applying a meaning. This page therefore keeps **Dryer 1tCS** separate from same-looking codes used by other Samsung appliance families.
