LG Dryer Error Code E03 — Drain Tank Full (Ventless Models)
What this means
The E03 error code appears on LG ventless and heat pump dryers when the condensation drain tank is full. Ventless dryers collect moisture extracted from clothes in an internal tank that must be emptied periodically. If a drain hose is connected to a floor drain or standpipe, a clog in that line can also trigger this code.
Step-by-step fix
2 stepsEmpty the drain tank
Locate the condensate drain tank (usually a pull-out tray at the top or bottom of the dryer). Carefully pull it out and empty the water into a sink or bucket. Reinsert the tank firmly.
Make this a habit after every few loads to prevent the tank from filling up mid-cycle.
Check the drain hose (if connected)
If the dryer is connected to a drain line via a hose, check the hose for kinks or clogs. Ensure the hose is not positioned higher than the drain tank exit point.
When to call a professional
If the tank fills up immediately after emptying, the internal condensation system may need service.
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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