Problem summary
Your LG washing machine is retaining water and won't drain at the end of the cycle. The drum may be full of standing water, or the machine stops mid-cycle unable to empty. This is a common fault pattern, and in most cases a worn part or blockage is responsible.
Likely causes
Based on repair records, the most common causes are:
- Drain pump failure (about 38% of cases). The pump motor may have stopped working, or the impeller inside may be jammed or worn.
- Drum seal or bearing wear (about 21% of cases). A leaking drum seal can allow water to pool around the drum, preventing proper drainage.
- Door seal degradation (about 21% of cases). A split or compressed seal can trap water inside the tub or prevent the drain cycle from completing.
- Blockage in the filter or hose. Lint, coins, or debris stuck in the drain filter or delivery hose will stop water leaving the machine.
What you can try yourself (DIY)
Before calling an engineer, check the following:
Check the drain filter Locate the small access panel on the front of the machine (usually bottom-left). Open it and unscrew the filter cartridge anticlockwise. Empty any visible debris, lint, or coins, rinse it under a tap, and screw it back in firmly.
Inspect the drain hose If your machine is accessible from behind, check the drain hose for kinks, pinches, or blockages. Run water through it over a bucket to see if it flows freely.
Look at the door seal Open the door and examine the rubber seal around the edge. Look for visible splits, hardening, or trapped debris. If it's compressed or cracked, it will need replacing.
Check for standing water If water is pooled inside the drum after a cycle, turn the filter cartridge (above) anticlockwise slowly to let water out into a bucket first.
Why this may need an engineer
If you've checked the filter and hose and the machine still won't drain, the problem is likely inside:
- Pump replacement requires access to internal plumbing and electrical connections. Disconnecting or refitting the pump, sump hose, and pressure sensor lines is a job for a qualified engineer.
- Door seal or drum bearing replacement involves partial or full drum removal and reassembly—not a practical DIY task.
- Electronic control faults that prevent the drain cycle from starting require diagnostic testing and PCB work.
Attempting these repairs without training risks water damage, electrical hazard, or further breakdown.
If you're in Northern Ireland, SMC Services can usually book a repair within 2–3 working days.
When to call SMC Services
Contact us if:
- The filter and hose are clear but the machine still won't empty.
- You hear a grinding or unusual noise when the machine tries to drain.
- Water is leaking from under the machine during the cycle.
- The door is stuck closed and won't open after a failed drain cycle.