Samsung Dryer Error Code Ht — Heat Pump System Error
What this means
The Ht error code is specific to Samsung heat pump dryers. Unlike traditional dryers that use an electric heating element or gas burner, heat pump dryers use a refrigerant compressor and two heat exchangers to dry clothes at lower temperatures. The Ht code indicates a fault in the heat pump circuit — the compressor may not be starting, refrigerant pressure is abnormal, or a heat exchanger sensor is reading incorrectly.
Alternate codes: HT, Ht1
Step-by-step fix
4 stepsPower cycle the dryer
Unplug the dryer for 10 minutes, then restore power and start a cycle. Heat pump systems sometimes need a longer reset period than conventional dryers.
If the dryer was recently moved, allow it to sit upright for at least 4 hours before running — tilting can cause oil to migrate in the compressor.
Clean the heat exchanger filters
Open the lint filter area and locate the heat exchanger access panel (usually below the lint filter on Samsung heat pump models). Remove and clean the condenser filter under running water. Let it dry before reinstalling.
A clogged heat exchanger filter forces the compressor to work harder and can trigger this error. Clean it every 5–10 cycles.
Check the drain system
Heat pump dryers collect condensation that must be drained. Check the water collection tank (pull-out drawer at the top) and the drain hose if connected to a permanent drain. A blocked drain can cause the system to shut down.
Empty the collection tank and verify the drain hose is not kinked or clogged.
Listen for compressor operation
Start a cycle and listen for the compressor humming at the bottom of the dryer. If it does not start, clicks repeatedly, or makes a loud buzzing sound, the compressor may be failing.
A compressor replacement on a heat pump dryer is a sealed-system repair that requires specialized tools and refrigerant handling.
When to call a professional
Heat pump system repairs require specialized refrigerant handling equipment and EPA certification. Call a Samsung-authorized technician for any Ht error that persists after cleaning filters and power cycling.
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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Heat Pump Compressor
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