This alert will indicate that the temperature inside the Naked Control Unit has increased above normal operating temperature. The Naked control unit can operate normally at temperatures up to 80 degrees Celsius, if the internal temperature increases above this the software will start to modulate the output of the OXI CELL to reduce the load on the transformer inside the control unit and begin to reduce the internal temperature.
The internal temperature of the Naked Control Unit can increase for several reasons, a high TDS level will increase the load and stress on the internal components which will therefore create extra heat internally. Always ensure that the TDS levels are within the ideal range of 800-1200ppm.
Another common reason you may see this alert is if the Naked Control Unit is situated in a position where it is in direct sunlight for a majority of the day, particularly on very warm days this will impact the internal temperature of the control unit and trigger the alert. Installing a protective cover to ensure that the control unit is out of direct sunlight will alleviate the issue from arising again.