jdw Posted January 14, 2013 Report Share Posted January 14, 2013 trying to rehab older tub with Balboa controls. changed pumps and now heater lights up when jets on high but not when on low. Quote Link to comment Share on other sites More sharing options...
Spa_Guru Posted February 26, 2013 Report Share Posted February 26, 2013 You have your pump high and low speed wires switched (120v spas) or -- your filter is dirty (remove the cartridge and see if it works) or your pressure switch needs adjusted. Quote Link to comment Share on other sites More sharing options...
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