Question about Grundfos Comfort System Recirculator 595916
I cannot find the number "595916" on the devices, but I do find: TYPE: UP15 -10SU7P/TLC Comfort Series Model CS-1 Class F
Posted by Anonymous on
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Posted on Jan 02, 2017
SOURCE: After replace the cold water
Many times when pipes are worked on, the work loosens sediment that was built up in the pipe.
Sediment is probably why cold water line was replaced.
That's why faucet aerators get clogged up after pipes are worked on.
It sounds like your grundfos pump got clogged too.
Immediately unplug the pump so motor is not overheating.
Motors are meant to turn freely and can be damaged when blocked.
Take apart the pipes at grundfos pump and see if you can clean out the line.
If line cannot be cleaned or pump doesn't restart, then the grundfos has to be replaced.
Also look at adjoining pipes and see if there is a clog in nearby elbow, especially where galvanized and copper pipes join..
Posted on Dec 26, 2010
It sounds like the installation loosened sediment inside pipe.
Remove sink aerator and see if you can flush open the faucet.
Also check if other faucets are receiving hot water from hot-and-cold taps that says if grundfos is pumping hot water from the water heater correctly.
When recirculation pump is running, both hot and cold water lines have hot water.
If other faucets have hot water in both lines, then that tells you the blockage is localized in furthest faucet supply lines.
You may have to dissemble those supply lines and flush the sediment out.
Posted on Dec 30, 2010
SOURCE: Same problem as another writer
If the pump is hot, the motor has overheated and will stop working. There's no cure for motor at this point. Be sure to de-lime and de-scale re-circulation pumps occasionally.
Return pump and exchange for new. Sounds like you already diagnosed the problem correctly.
Posted on Apr 10, 2011
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