Washing · 4 min read
Washing machine won't drain — what to check first
Three checks you can safely do yourself before calling an engineer, from filter cleaning to drain-hose inspection.
Safety first — do not use the appliance
If you smell gas, call the National Gas Emergency Service on 0800 111 999. For immediate danger call 999.
This professional guide has been compiled by the Kettlebridge engineering team to help you diagnose and, where safe, resolve common appliance issues. We provide these steps based on thousands of successful repairs across the UK.
Follow the troubleshooting steps below in order. Remember: safety is paramount. If you encounter any step that involves live electricity, gas connections, or complex disassembly that you are not comfortable with, stop immediately and contact a professional.
Step-by-step checks
- Isolate at the socket. Switch the machine off at the wall before working near the filter or pump.
- Clean the pump filter. Usually behind a small hatch at the front-bottom. Have towels ready — expect residual water.
- Check the drain hose. Kinks, blockages, or a too-high loop can stop water leaving. The hose should sit 60–90cm above floor level.
- Test a rinse & spin cycle. If it still won't drain, the pump or pressure switch may have failed.
Safety notes
- Never remove the front pump filter while the drum still contains water above the door glass line.
- If you see scorch marks or smell burnt plastic, stop and book a repair — the pump motor may have failed.
When to book a repair
If the pump filter is clear and the hose is unobstructed but the machine still won't drain, the drain pump or pressure sensor typically needs replacing.