Washing Machine Drain Pipe Overflow

Washing machines can make a real mess if your drain pipe overflows. Washing machines can quickly dispel gallons of water on the floor causing the potential for some major water damage. When a washing machine runs through its cycles, it pumps out dirty water and refills the basin with the clean water it needs to rinse your clothes. To remove the dirty water, the machine pumps water through a rear-mounted outlet tube fitted with a flexible discharge hose. The flexible hose flows into a drain pipe that is connected to the main sewer line.  However, it is possible for your washing machine drain pipe to fail. The most likely problem is a clogged drain pipe. Pipes can become clogged by lint and other debris that detach from your clothing during the wash. Of course, there are other issues that can cause washing machine overflows including deteriorating pipes, a kinked discharge hose, sewer line blockages, and inadequately sized drain pipes.

If your washing machine is overflowing, you should immediately turn it off.  You will want to immediately clean up the excess water to avoid damage to flooring, baseboards, and walls.

  • Check that the discharge hose is still inserted into the drain pipe. It is possible that the drain pipe has simply become unplugged. If this is the issue, you may want to periodically check your drain pipe connection to ensure it doesn’t vibrate out. You will also want to verify that there is at least half an inch of clearance between the drain pipe and the discharge hose, to allow for the proper ventilation required for drainage.
  • Check the drain pipe for small blockages in the hose. The drain hose is usually connected to a drain built into a wall behind the machine. If you find a blockage, clear it and drain any remaining water in your machine. If you may also want to check to see if your machine is equipped with a lint trap or filter and clean it at least once a month.
  • If this doesn’t correct the problem, there could be an issue with the washing machine pump and an appliance repair technician may be able to help.

If your machine is in order, there are many other reasons you have overflow including a faulty water inlet valve, a faulty pressure switch, a problem with your house’s water pressure, or pipes.  When you require the service of a good, reliable plumber, look no further than NRH Plumbing.  Our certified technicians can diagnose your problem. Call 612-900-7728.

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