Greg T. Posted April 1, 2021 Report Share Posted April 1, 2021 Hello. I just got a VSP and I noticed something strange. When my pump goes into the Low RPM mode at 1500 RPMs, the flow goes to 0 GPM (what it reads on the pump) but I haven't lost the priming function. Is this ok? What is the ideal flow rate for the Low RPM mode? I have solar pool panels that the water goes through. Any advice will help. Thank you! Quote Link to comment Share on other sites More sharing options...
RDspaguy Posted April 1, 2021 Report Share Posted April 1, 2021 That means your system has too much head (resistance to water flow) for 1500rpm to overcome. Could be a clogged filter, broken (or missing) bypass valve on the solar panels, or other flow restriction. I think it may be time to call in a pro. @jimmythegreek, @Pool Clown, anything to add? Quote Link to comment Share on other sites More sharing options...
Greg T. Posted April 1, 2021 Author Report Share Posted April 1, 2021 I will have the pool guy check it out. My thought is that since the low flow is too low, it makes it almost pointless to run it at that RPM until the pool guy can check it out. Does that make sense? Quote Link to comment Share on other sites More sharing options...
jimmythegreek Posted April 12, 2021 Report Share Posted April 12, 2021 Do you actually have amy flow at that speed coming out of the returns? Not sure how you control solar but 1500 isnt enough for solar. I have a small 4 panel array amd run 2100 on a full size Hayward VS for optimum flow. 1 Quote Link to comment Share on other sites More sharing options...
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