dang Posted November 2, 2019 Report Share Posted November 2, 2019 Hi I just replaced my brainbox and heater in my 30 year old spa with a Balboa VS500 unit. I am regularly getting a "DY" low flow code and have had no luck troubleshooting. The small 3/4 circ pump is installed after the filter, is it possible that there isnt enough flow through the filter to keep the heater supplied?? Any other ideas anyone has? thanks Dan Quote Link to comment Share on other sites More sharing options...
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