Samsung Dryer tS — What It Means & How to Fix It
Also shown as tE, tC, tO, t0, t5, tE3, tC5, 1 tC on some models.
tS on a Samsung dryer flags a problem with the temperature reading itself — the sensor is reporting a value the control doesn't trust — and the most common trigger is a clogged lint filter or vent throwing readings off rather than a dead part.
What this code means
The dryer watches drum temperature through a thermistor, and tS (with its siblings tE, tC, tO and t0) is logged when that reading drifts outside the plausible range or stops tracking the way the control expects. Restricted airflow is the usual instigator, because a heat-choked drum produces readings that look wrong. A genuinely faulty thermistor or its wiring is the other possibility once airflow is ruled out.
On Samsung's display an upside-down "F" is actually a "t", so a code that looks like "FS" or "F5" is really tS or t5 in this temperature family. Clean the lint screen and vent first; a sensor or wiring fault is only diagnosed after airflow checks out.
Most likely causes
| Cause | How likely | DIY-fixable? |
|---|---|---|
| Clogged lint filter or blocked exhaust vent skewing temperature readings | Very common | Yes — no tools |
| Restricted airflow from a crushed transition hose | Common | Yes — no tools |
| Faulty thermistor (temperature sensor) | Occasional | No — technician job |
| Loose or chafed sensor wiring or connector | Occasional | No — technician job |
What you can try yourself
- Unplug the dryer and clean the lint filter thoroughly, washing off any film so air passes through it freely.
- Check the whole exhaust path — transition hose, wall duct, outdoor flap — and clear any lint that could be distorting the drum temperature.
- Give the dryer clearance from the wall so the hose isn't pinched, then restore power and run a short cycle.
- If tS (or the upside-down-F version) comes back with airflow confirmed clear, the thermistor or its wiring is the likely fault, and that's a technician job rather than a user fix.
When to call a technician
- The code returns after the lint screen and vent are clean.
- Clothes finish stone cold, or far too hot, alongside the code.
- The code appears at the very start of every cycle regardless of the settings you pick.
Typical professional repair cost: A thermistor replacement on a Samsung dryer generally runs $150–$220 with labor; wiring repairs vary with how much harness is involved.
Frequently asked questions
Why does my Samsung dryer show an upside-down F?
That character is meant to be a lowercase "t", so what looks like "FS" is really tS — a temperature-sensor code. Samsung calls this out specifically. Read any "F-looking" letter in these codes as a "t" and follow the temperature-error steps: clean the lint screen and exhaust vent first.
What's the difference between tS and HC on a Samsung dryer?
Both often trace back to a clogged vent, but they describe different things. tS means the temperature reading itself looks wrong or untrustworthy, while HC means the dryer actually measured an overheating condition and shut the heat off. The first-line fix — clean the filter and vent — is the same for each.
Can a clogged vent really cause a sensor error?
Yes. When airflow is choked the drum heats unevenly, and the thermistor sees temperatures that don't match what the control expects, which reads as a sensor fault. Clearing the lint screen and exhaust restores normal airflow and often clears tS without any parts.
Related Samsung codes
- Samsung Dryer dC Your Samsung dryer shows dC when it can't confirm the door is shut and latched, so the drum won't turn — usually a door caught on laundry, a misaligned strike, or a tired latch switch rather than anything deep inside the machine.
- Samsung Dryer HC HC is Samsung's overheating warning: the dryer sensed the drum getting hotter than it should and cut the heat to stay safe — nine times out of ten because a clogged lint filter or blocked exhaust vent is trapping heat inside.
- Samsung Dryer 9C1 9C1 tells you the Samsung dryer is seeing abnormal electrical supply — too high, too low, or unstable — most often from an extension cord, a shared or miswired outlet, or a power cord that isn't fully seated.
- Samsung Dryer bE bE means the Samsung dryer thinks one of its panel buttons is stuck down or being held — often just a sticky or debris-blocked button that frees up once you power off and work each one back and forth.
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