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Why does touchless water faucet only work when other faucet turned on?

I have a touchless water faucet installed on a copper countertop in the kitchen. It worked great for about nine months but now it won't activate when touched. The light will turn on and off but the water won't come out. However, if I turn on a faucet in the bathroom on the other side of the house, the touchless faucet in the kitchen DOES activate and the water comes out. Maybe there's a small charge that's interfering with the touchless faucet that gets grounded when I run water through the bathroom faucet? Any ideas? EDIT: By "touchless" I mean the kind that you can tap with your arm to activate, not the kind with a sensor.

Posted by Anonymous on

  • Brad Brown Oct 18, 2021

    Hi Anonymous, I want to help you with your question, but I need more information from you. Can you please add details in the comment box? What make and model is it?

  • Anonymous Oct 27, 2021

    Thanks for your comment. It ended up being, as I suspected, a problem with a stray charge.

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Alex Urzica

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  • 48 Answers

It's possible that the solenoid valve in the touchless faucet is not functioning properly, and needs to be replaced. Another possibility is that there is a loose or broken wire in the electrical circuit that powers the solenoid valve. You may want to check the connections and wiring, and consult a plumber or electrician if necessary, to help diagnose and repair the issue.

Posted on Jan 29, 2023

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Hope this helps. If it does, I'd appreciate your vote. Thanks,

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