Washing Machine Not Draining? Common Causes and Fixes

You open the lid or door at the end of a cycle and the clothes are sitting in a tub of grey water. It is one of the most common calls we get at our Kitchener and Guelph shops, and the good news is that the cause is often simple.

Before you check anything, unplug the washer. If there is a lot of water in the drum, have towels and a shallow pan or bucket ready. Here is what our technicians look at first.

1. A Clogged Drain Pump Filter

Most front load washers have a small filter (sometimes called a coin trap) behind a panel at the bottom front of the machine. It catches coins, hair ties, lint and the odd sock before they reach the pump.

Place a pan under the panel, open it, and drain the water through the small hose if your model has one. Then slowly unscrew the filter, clean it out, and screw it back in firmly. A packed filter is the number one reason a front loader will not drain.

Many top loaders have no user accessible filter, so skip ahead if that is you.

2. A Kinked or Blocked Drain Hose

The drain hose runs from the back of the washer to a standpipe or laundry tub. If the machine was pushed back against the wall recently, the hose may be pinched or bent.

Pull the washer out, straighten the hose, and check it for clogs by running water through it in a laundry sink. Also make sure the hose is not pushed too far down into the standpipe, since that can cause siphoning and drainage problems.

3. A Slow or Blocked Standpipe

Sometimes the washer is fine and the problem is the house drain. If water backs up out of the standpipe or the laundry tub fills and drains slowly, the clog is in your plumbing, not the appliance. That is a job for a plumber.

4. Too Much Detergent or the Wrong Kind

High efficiency washers need HE detergent, and not much of it. Too much soap creates heavy suds that the machine struggles to pump out, and some models will pause the drain to let the foam settle. Use the amount on the label for your load size, not a full cap.

5. A Faulty Lid Switch or Door Lock

A washer will not drain and spin if it thinks the lid or door is open. On top loaders, a worn lid switch is a common culprit. On front loaders, a failing door lock can stop the cycle partway. If the machine stops at the same point every time and the lid or door feels normal, this part may need replacing. Never try to bypass a lid switch or door lock. They are there to keep hands away from a spinning drum.

6. A Worn or Jammed Drain Pump

If you hear the washer humming during the drain portion but no water moves, the pump may be jammed with debris or failing. Clearing the filter (on front loaders) sometimes frees it up. If not, the pump needs to be tested and possibly replaced by a technician.

7. A Control or Sensor Issue

Modern washers use a pressure sensor and a control board to decide when to drain. If you see an error code, write it down before you reset anything. It helps a technician narrow down the problem quickly. Control board diagnosis is not a DIY job.

When to Book a Washer Repair

If you have cleaned the filter, checked the hose and cut back on detergent, and the washer still will not drain, it is time for a closer look. Leaving standing water in the drum for days can lead to odours and mould, so it is worth dealing with sooner rather than later.

Al's Appliance offers in-home washer repair across Kitchener, Waterloo, Cambridge and Guelph. If your washer is at the end of its life, we also carry new, used and scratch and dent machines with delivery available.

Call 519-824-8828 or visit alsappliance.ca to book a repair.