This alert will show when the water temperature is between 40º - 45ºC and the unit will operate as normal. This alert is in the event that there may be a closed valve, pump fault or water flow issue.
There may also be cases where the ambient air temperature may be heating the water inside the cell housing, particularly if the pool equipment is in direct sunlight for long periods which can also contribute to the high water temp alert being activated.
Should the water rise above 45ºC the unit will pause and wait for the water temperature to drop again, once more to protect your equipment and the safety of others.