This unit will run Pump 1- 2 speed, Pump 2 or Blower -1 speed and a circulation pump and uses the standard SClass topsides K-9,K-18 or K-19

Note: When the spa temperature rises 2 F above the desired set point (this may occur in hot climates), the circulation pump is normally shut off to allow the water to cool back down to the desired set point, at which point the Circulation pump output is re-activated

SC-MP-P121-P211-O1-CP1-NE-LS