No matter what heat temperature set point I enter on Intellitouch control panel the heater is cut off at about 28C (82F). The heater itself is set at 38C (100F). I have found a work around by using the calibrate temp fuction to set pool temp say 10C low but this means I just keep heating to heater's set point and I do not have remote control through pentair. Any suggestions on how I get the Pentair to stop cutting heater at 28C without using my work around ?