Samsung Dryer Error Code tE3 — Exhaust Thermistor Error
What this means
The tE3 error code indicates the exhaust thermistor (the sensor that monitors the temperature of air leaving the dryer drum) is malfunctioning. This is different from the drum thermistor (tS) and the inlet thermistor. On Samsung heat pump dryers and some newer ventless models, the exhaust sensor plays a critical role in regulating the heat pump cycle. A faulty sensor can cause the dryer to shut down mid-cycle or not heat at all.
Alternate codes: tC3
Step-by-step fix
4 stepsPower cycle the dryer
Unplug the dryer for 5 minutes, then restart a cycle. If the code was triggered by a temporary glitch, it will not return.
If the code reappears within the first few minutes, the sensor likely needs testing or replacement.
Locate the exhaust thermistor
Unplug the dryer. The exhaust thermistor is mounted on the exhaust duct or blower housing — the path where hot air exits the drum. Remove the top or rear panel to access it depending on your model.
On heat pump models, the exhaust thermistor may be located near the condenser coil rather than the traditional exhaust path.
Test the thermistor
Disconnect the thermistor wires. At room temperature (~75°F), a Samsung exhaust thermistor typically reads around 10 kOhms. OL or 0 ohms means it is defective.
Compare your reading to the tech sheet value for your specific model — heat pump models may use a different resistance range.
Replace the exhaust thermistor
Remove the mounting screw or clip, install the new sensor, and reconnect the wire harness. Reassemble and run a test cycle.
Ensure the sensor is seated firmly against the duct surface for accurate temperature readings.
When to call a professional
If the thermistor tests good but the error persists, the control board may have a damaged input circuit. On heat pump models, the heat pump control board specifically should be checked by a technician.
Information compiled from manufacturer service manuals, official troubleshooting documentation, and appliance repair industry resources. This guide is for informational purposes only — always consult a qualified technician for complex repairs.
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