LG Dryer Error Code UF — Compressor Restart Failure (Heat Pump)
What this means
The UF error code indicates the compressor in an LG heat pump dryer failed to restart after a pause or shutdown. This can occur if the dryer is restarted too quickly after a cycle ends (the compressor needs time to equalize pressures), if the unit is unlevel, or if the compressor motor is failing.
Step-by-step fix
3 stepsWait and restart
Unplug the dryer for at least 5 minutes to allow compressor pressures to equalize. Plug it back in and try starting a cycle.
Unlike traditional dryers, heat pump dryers need a cool-down period between cycles for the compressor.
Level the dryer
Use a bubble level to check that the dryer is sitting level on all four feet. Adjust the leveling feet as needed.
Avoid overloading
Reduce the load size if the drum was overfilled. Overloading puts extra strain on the compressor.
When to call a professional
If the error keeps occurring, the compressor may be failing and requires professional diagnosis and replacement.
Related error codes
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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