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Thread: washing machine leak

  1. #1

    Default washing machine leak

    We had a water hammer issue steming from our washing machine (LG) . When the washer started to load water , the pipes would shake upstairs

    My plumber suggested that I install two mini arrestors on the washer inlet hoses.

    I disconnected the inlet hoses from the washer and ran the hoses into arrestors that connected the arrestors to the washer

    The connection seemed fine after the first wash I noticed no leaks from the connections

    However after a few wash loads I did notice some water on the tile floor. Since it was a small amount and nightime I figured i would address the issue in the morning

    In the morning there was a sizeable amount of water on the floor despite the washer not being on ( the water connect on the wall was open)

    The water contined to flow thru the hoses and onto to the floor

    I noticed there a small drip of water coming from the top back of the washer, just below the hose connection. This happened if the washer was on or off

    I disconnected thje arrestors, dried the floor and did more laundry. There was no water on the floor since i disconnected the arrestors.

    What did I do wrong, and what caused the water on the floor

    Some evidence point that this was an arrestor issue, but I am not sure why



  2. #2
    In the Trades Gary Swart's Avatar
    Join Date
    Sep 2004
    Yakima WA


    Regarding your water hammer. Do you know what you water pressure is? PSI should be from 40 to 80, and in my opinion at least, 80 if still too high. Since pressure can vary, you really need to check it frequently at different times of the day, or better yet, get a gauge with a tattle tale needle. If it is too high appliances like the washer, dishwasher, humidifiers, ice makers, and toilets can develop problems. A pressure regulator would be in order in those cases, along with a thermal expansion tank. Many not be your problem, but worth checking.

  3. #3
    Test, Don't Guess! cacher_chick's Avatar
    Join Date
    Jan 2008
    Land of Cheese


    There is nothing inside the washer that would leak because of an arrestor being installed. If the problem resolved itself, it would have had to be the hose connection leaking.

  4. #4
    Retired Defense Industry Engineer jadnashua's Avatar
    Join Date
    Sep 2004
    New England


    The hose washers on some of those things are quite hard, and it can take a fair amount of pressure to make a seal. You might need a pair of pliers to tighten them that extra 1/8-turn or so to make a good seal. The fittings on the WM are now sometimes plastic, so you need to be careful not to tighten things too much or risk a big repair bill if you strip or break something. I don't feel comfortable without shutting the supply valves to the WM off when not using it. That would just mask a leak, though. It can make a real difference if a hose should break while away, as that can cost huge amounts of money in water damage.
    Jim DeBruycker
    Important note - I'm not a pro
    Retired Defense Industry Engineer; Schluter 2.5-day Workshop Completed 2013, 2014

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