Following link shows links to grundfos and grundfos manuals.
http://waterheatertimer.org/Water-heater-recirculation-system.html#Grundfos
1) My grundfos stopped working because sediment clogged the pump, and the motor slowed.
When motors slow, they get hot and burn up.
I ask my friend who rewinds motors how to fix it, he said in the old days, they rewound every motor, but today they throw valuable scrap into landfill, and then buy new motors from China.
I told him not to retire, but go to school and teach kids how to rewind motors, and then took apart the grundfos line and cleaned it out with CLR, but it never worked again.
2) If timer stops working, but pump still works, you can buy cheap plug-in timer and connect grundfos to the cheap timer
Add a comment for more free help.
Also take advantage of fixya phone service.
For a price, expert speaks with you over phone while you work on timer or any do-it-yourself project.
Fixya is always less expensive than a service call.
The link did not contain info for the up10-16...Lots of info for other models, but none for the model I have....
The grundfos 'contact-us' link is right there. Grundfos makes 100s of products with different suffixes for each model number. Certainly you are able to move forward with your project using the important information provided here, and with the key Grundfos links shown, plus the grundfos contact link. If somebody bothered to give me that help for free, I would be appreciative. Next time, bring your checkbook.
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