What E03 (Drain Tank Full) Means
E03 means the dryer detected its base water reservoir is full via a float switch, per LG's dryer Help Library article - this applies to models with an internal water tank rather than a direct drain line.
Common Causes of E03 (Drain Tank Full)
- Internal water drain tank full and needs emptying
- Float switch fault (if emptying the tank doesn't clear the code)
🔧 One Safe Check You Can Try
Pull out the drain tank and empty it, then unplug the dryer, wait 60 seconds, and restart it.
⚠ Why You Shouldn't Go Further Than That
- If you've emptied the tank and E03 still shows after a reset, the float switch itself may have failed and needs a technician's inspection - don't keep emptying an already-empty tank repeatedly.
Opening a panel to inspect or repair something yourself doesn't automatically cancel your manufacturer's warranty — but it can risk accidental damage, and some manufacturers do have specific service conditions. Check your product's warranty terms, or ask us, before deciding.