Swiming pool heat pump 1>Reliable quality, EOC-Friendy 2>Spa, sauna room partner 3>Titanium heat exchanger,anti-corrosive Swiming pool heat pump1. compressor: ... is something wrong with the heat pump.8. display panel can show working state of heat pump, and if there is something ... so that can reduce the start current of the heat pump10.Refrigerant: R417A/R407C/R404A, ODP:0 Swiming pool heat pump