Jay, As I remember, that is the classic failure mode. We used to see it now and then, more often than we liked. It's why I used to recommend always getting the extended warranty. And, it can be either the CU200 or the pump itself. It might also be a corroded connection between the two. Brad
On Thu, Feb 24, 2022 at 8:12 PM Jay <jay.pe...@gmail.com> wrote: > Yes. > And if that light is on it’s supposed to stop pumping. Even if the float > was bad or maybe the wires were bad, if the cu200 is seeing a full tank > signal it’s supposed to shut off the pump. > And it’s not. > > I’ve just never seen this failure mode before. > > Jay > > > > On Feb 24, 2022, at 8:48 PM, Mac Lewis <maclew...@gmail.com> wrote: > > > Hi Jay, > > Have you ruled out a problem with the float switch/wiring? > > On Thu, Feb 24, 2022 at 5:13 PM jay <jay.pe...@gmail.com> wrote: > >> HI All, >> >> Has anyone seen this failure mode on a Grundfos CU200. >> >> The tank full light is on and it keeps pumping ( green arrows working) >> >> I suspect the CU200 just needs to be replaced, but as they are pretty >> pricy I’d thought I’d ask around first. >> >> thanks >> >> jay >> >> >> _______________________________________________ >> List sponsored by Redwood Alliance >> >> Pay optional member dues here: http://re-wrenches.org >> >> List Address: RE-wrenches@lists.re-wrenches.org >> >> Change listserver email address & settings: >> http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org >> >> There are two list archives for searching. When one doesn't work, try the >> other: >> https://www.mail-archive.com/re-wrenches@lists.re-wrenches.org/ >> http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org >> >> List rules & etiquette: >> http://www.re-wrenches.org/etiquette.htm >> >> Check out or update participant bios: >> http://www.members.re-wrenches.org >> >> > > -- > > > > Mac Lewis > > *"Yo solo sé que no sé nada." -Sócrates* > _______________________________________________ > List sponsored by Redwood Alliance > > Pay optional member dues here: http://re-wrenches.org > > List Address: RE-wrenches@lists.re-wrenches.org > > Change listserver email address & settings: > http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org > > There are two list archives for searching. When one doesn't work, try the > other: > https://www.mail-archive.com/re-wrenches@lists.re-wrenches.org/ > http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org > > List rules & etiquette: > http://www.re-wrenches.org/etiquette.htm > > Check out or update participant bios: > http://www.members.re-wrenches.org > > _______________________________________________ > List sponsored by Redwood Alliance > > Pay optional member dues here: http://re-wrenches.org > > List Address: RE-wrenches@lists.re-wrenches.org > > Change listserver email address & settings: > http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org > > There are two list archives for searching. When one doesn't work, try the > other: > https://www.mail-archive.com/re-wrenches@lists.re-wrenches.org/ > http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org > > List rules & etiquette: > http://www.re-wrenches.org/etiquette.htm > > Check out or update participant bios: > http://www.members.re-wrenches.org > >
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