I have a gas water heater with a circulation pump (for far areas of my house). Lately, when turning on the cold water in my master bath -- which is about 110 feet from the water heater, hence the circulation pump -- the water is hot until it has a chance to run through. This takes about 3-4 minutes and is a tremendous waste of water.

At first, this problem just appeared in the areas farthest away from the heater, but lately, it has been showing up in the kitchen, which is about 30 feet from the heater.

Before I call the plumber who installed the system, does anyone have any suggestions? I see from previous postings that such a problem may be caused by a "check valve", whatever that is.

Thank you in advance.

afaroo

Hi John,

I think Home Depot or Lowe's may have it, you take the model number with you and they be able to help you, I am attaching the pump and the instruction link how to install the sensor, Thanks.

John

http://www.freshwatersystems.com/spe...-UP-TL-043.pdf

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countryman47

John,

Your diagnosis was absolutely correct. I learned that the sensor valves are only available from a Grundfos distributor, so I called my original plumber who did the installation. He confirmed your diagnosis, and mentioned that in recent weeks he's had three such sensor valves go south, which he thought to be strange. Anyway, he's ordered me a new one.

Thanks so much for your help in this matter.

John G.

afaroo

Hi John,

Thanks for the update, please let us know when you get it it fixed.

Regards,
John

countryman47

John,

Just an update to the hot water in the cold water faucet problem here in Oregon: Ordered the sensor valve from the plumbing contractor who installed the system; he delivered it, and I installed it. Everything works perfectly now.

Thanks for your help.

John

afaroo

Hello John,

Thanks for the update, and it is my pleasure that we could help.

Best regards,
John