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Sundance Spa Issue

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I have a 2004 Sundance Spa 6 person.  It seems like we are always battling a low flo error.  It almost seems to just randomly come and go.  I have replaced the flo switch but it didn't seem to resolve the issue.  I remove the filter and that doesn't seem to do any good either.  Is this a known problem for the spas or is the problem maybe the pump?



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When you get the low flow error, is any water coming out of the heat return?

Is the water level at least halfway up the skimmer?

Does the weir gate float with the water level, or does it get stuck up?

When you get the low flow error, can you look at the flow switch and see if the two pieces in the middle are touching?



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If it uses a small Lanig circ pump it could be starting to go on you. They will sometimes start and stop then throw an error code. The circ pump is often tied to the waterfall so if it is turned on when only the circ is running keep an eye on it for the flow to start and stop. It can often be intermittent and hard to diagnose.

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