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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.



1 Answer

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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When installing do you silicone each piece for example the faucet , the soap dispenser ,the sprayer , and the tap

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If you have a granite or stone countertop/sink, use silicone as plumber's putty will stain the stone. Plumber's putty is petroleum based so it will not adhere to stone. Normally you should use what the manufacturer recommends and where they recommend. When installing a faucet, put either around the base of any piece that goes through the countertop.

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

Handie Andie

Water leaking from the faucet onto the countertop.

Check out this web site and it looks like it should be a o ring at the base, anyway I hope this will be helpful.
It has a breakdown of faucet internal parts.

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