The filter cycle icon on my display is flashing, why?

In order to prevent excessive water temperatures due to long Filter cycles during warm weather, the system has a special safeguard.
If the water temperature exceeds the set point by more than 2^oF(1^oC) the system will cancel the Filter cycle and the Filter cycle icon will blink for the remainder of the filter cycle. The Filter cycle icon blink pattern will be : ON for 1/2 second, OFF for 1/2 second, ON for 1/2 second, and then finally OFF for 1 1/2 seconds. This sequence will then repeat. The filtration cycle will automatically reset itself once the water temperature falls below the setpoint.