Washing Machine Not Draining? Common Causes and How to Fix Them

A washing machine that won't drain properly leaves clothes sitting in water and can eventually cause error codes, foul odours and flooding. The good news is that many drainage problems have simple causes you can fix yourself without calling a technician.

Symptom: Water Left in the Drum After the Cycle

If your washing machine ends a cycle with water still in the drum, or takes much longer to drain than usual, you're dealing with a drainage problem. It may also show error codes like E21, F21 or simply stop mid-cycle.

Cause 1: Blocked Pump Filter

This is the most common cause. The pump filter catches lint, coins, hairpins, tissues and small items before they damage the pump. When it becomes blocked, water can't drain properly.

How to fix it: The pump filter is usually behind a small panel at the front base of the machine. Place a shallow dish and a towel underneath before opening — water will pour out. Unscrew the cap slowly to control the flow. Remove the filter, clean it thoroughly under running water and check the housing for debris. Reinsert, close the cap firmly and test.

Cause 2: Kinked Drain Hose

The drain hose runs from the back of the machine to the standpipe or sink drain. If the machine has been pushed too far back against the wall, the hose can kink, restricting flow.

How to fix it: Pull the machine away from the wall and check the entire length of the drain hose. Straighten any kinks. The hose should not be positioned so it makes a sharp bend at any point.

Cause 3: Blocked Drain Hose

Lint and debris can partially block the drain hose over time, reducing flow. Remove the hose from the standpipe and inspect it. Run water through it to check flow rate.

Cause 4: Blocked Standpipe or Household Drain

If your house drain is sluggish, the washing machine drain will be too. Test by pouring a bucket of water down the standpipe slowly. If it drains slowly, the issue is in the house plumbing, not the machine.

Cause 5: Faulty Pump

If the filter is clean, the hose is clear and the drain is unobstructed, the pump motor itself may have failed. Signs include a humming sound without draining, or complete silence when draining should occur. A pump replacement is a repair job for a technician.

Cause 6: Lid or Door Lock Fault

Some machines won't proceed to drain if the door lock fails to register as secured. This can present as a drainage problem but is actually a sensor or latch issue.

When to Call a Technician

If cleaning the pump filter and checking the hose doesn't resolve the problem, the pump, control board or door lock may need professional attention. At that point, compare the repair cost to replacement cost — a machine with multiple faults may not be worth repairing.

Oceania Appliances stocks tested washing machines with free Sydney delivery and a 3–6 month warranty. Contact us if you're ready to replace.