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Resin expelled from water softener during regeneration

I have a water softener with an Autotrol 255 valve. Occasionally after a regeneration cycle I find approx. 1/2 cup of resin has been discharged through the waste line. I have no issues when the valve is in the service position. Any ideas regarding where to check for a failure?? Thank you.

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  • juanlizcano May 16, 2009

    I have the same problem, does anybody know the answer?


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If you made it this far, you’ve just figured out what’s wrong with your water softener. There are a couple of things that can cause this. No it doesn’t mean that you have to throw your entire water softener away into some landfill. It can be fixed instead, possibly even at no cost.
First thing you need to check is the springs on top of the valve (in my guess this was the cause of losing resin). Take the cover off the top of the valve. Look at top of the valve, there are several metal springs. One or more of these springs may have come disconnected from the flapper valve(s). The springs will hold the flapper valves shut when they are supposed to be shut. I believe either me or someone before me did not put the valve back together correctly.
Alternatively, the flapper valves could be deteriorated, letting water/resign out. Also check the plastic dip tube that goes down into the tank, make sure nothing is broken there.

Posted on Mar 22, 2010

  • nateoverbey Mar 22, 2010

    Oh by the way. I used some panty hose attached to the drain line to determine if it was fixed. Manually run it through the cycles.


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This is a problem you have some broken parts inside the tank you need to get this fixed.  you are loosing your resin that is what sofens your water.

Posted on Jun 23, 2009

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