Whirlpool Dryer tS — What It Means & How to Fix It
Also shown as TS on some models.
tS on a Whirlpool compact dryer shows a problem with the thermistor, meaning temperatures are not reading correctly; on vented models check the lint screen and vent first.
What this code means
Whirlpool says tS shows a problem with the thermistor, which means temperatures are not reading correctly. As with hE, on a vented model the likely cause is a clogged lint screen or a blocked or restricted vent.
Whirlpool compact dryers.
Most likely causes
| Cause | How likely | DIY-fixable? |
|---|---|---|
| Restricted airflow on a vented model | Common | Yes — clean screen and vent |
| Thermistor fault | Common | No — technician job |
| Wiring fault | Occasional | No — technician job |
What you can try yourself
- Clean the lint screen.
- Check the vent for blockages, kinks or restrictions.
- Unplug the dryer for a few minutes, plug in, and run a cycle.
- Schedule service if tS returns.
When to call a technician
- tS with clear airflow.
- Dryer overheats.
- Dryer stops shortly after starting.
Typical professional repair cost: About $100–$200 for a thermistor replacement.
Frequently asked questions
What does tS mean on a Whirlpool dryer?
A problem with the thermistor — temperatures are not reading correctly.
Can a blocked vent cause tS?
On a vented model Whirlpool says a clogged lint screen or restricted vent is the likely cause.
What is a thermistor?
A sensor whose electrical resistance changes with temperature; the control uses it to read drum air temperature.
Sources checked
Error meanings can vary by model. This guide was checked against the documentation above; use the manual for the model number on your own appliance when it differs.
Related Whirlpool codes
- Whirlpool Dryer PF PF on a Whirlpool dryer is a power-failure notice: the dryer lost power mid-cycle and stopped. Nothing is broken — press START to clear it and resume the load.
- Whirlpool Dryer AF AF on a Whirlpool dryer is the airflow warning (F4E3 on some models): exhaust flow is restricted. Clean the lint screen and the full vent run — most cases need no parts at all.
- Whirlpool Dryer L2 L2 on a Whirlpool dryer means the 240-volt supply is weak or a leg is missing — the dryer spins but won't heat. Check the breaker handles, then call an electrician.
- Whirlpool Dryer F1 E3 F1E3, F1E4 and F1E5 indicate there may be an issue with the dryer's control unit or its wiring — try starting a cycle again, then remove power to reset it, and call service if the code returns.
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