Operating State Screens

Welcome screen displaying the current firmware version. This screen is shown only after the device is restarted.

If Wi-Fi is enabled, the device displays connection information together with the SSID of the network it is connecting to.

The firmware version is checked during startup. If the installed firmware is up to date, this message is displayed.

A new firmware version is being downloaded and installed. The device will automatically restart when the update process is complete.

The device is connecting to the MQTT server. After a successful connection, it switches to the configured MAN or AUTO operating mode.

Main AUTO mode screen waiting for the scheduled start time. The current time is also displayed.

Main AUTO mode screen waiting for the configured light level to be reached. The current time is also displayed.

Main AUTO mode screen showing the countdown started after the required ambient light level has been reached. If light conditions worsen, the system returns to the waiting state. When the countdown finishes, heating mode will start.

Main AUTO heating screen while heating is active. Current pool and heating temperatures are displayed. If either temperature value is blinking, a temperature measurement is in progress and will finish after the configured Pool circ and Heat circ intervals.

Indicates a pause after insufficient heat was detected from the solar panels. The countdown shows when the next measurement will be performed.

Main AUTO heating screen shown when the heating period has ended or the pool temperature has reached the target level. The blinking value indicates the last known measured pool temperature.

Main heating screen displaying the pool temperature, heating water temperature, running pump indicator and the target pool temperature. After activation, the pump indicator is displayed as an hourglass during the heating circulation cycle.

Pool heating has finished either because the pool reached the target temperature or because the heating period ended. Filtration will start at 20:00. This screen is displayed only if filtration is enabled.

Indicates that filtration is currently running. A countdown to the end of the filtration cycle is displayed. When filtration ends, the unit returns to standby mode.

Main MAN mode screen showing the status of the pump, heating valve and filtration valve. When heating or filtration is ON, the corresponding valve is closed. The current pool temperature is also displayed. If the temperature value is blinking, a temperature measurement is currently in progress. A blinking hourglass symbol in the upper-right corner indicates that a timer is running.

If a timer is running (indicated by the hourglass symbol in the upper-right corner of MAN mode), pressing the DOWN button displays the timer status for approximately 1.5 seconds. The remaining time and the operating mode that will be activated when the timer expires are shown.

Determining the circulation path length between the pool and the NTC temperature sensor. The system monitors temperature changes until a stable temperature reading is detected.

Determining the circulation path length between the pool and the NTC temperature sensor. The system monitors temperature changes until a stable temperature reading is detected. Additional calibration screens may be displayed during this process. Calibration is normally performed only during the first startup of the controller. It can be forced again by resetting the default circulation path lengths for the pool and solar panels. In some installations, manual adjustment of the measured times may provide more accurate results.

Error in the NTC sensor connection. Check that all sensors are connected correctly and that no sensor cable has been damaged or disconnected.

Heating reactivation is not possible. The active heating period has already ended.

The battery powering the real-time clock has reached the critical level of 2.5 V. The clock will continue working for some time, but battery replacement is recommended. If your unit is still under warranty, contact service for battery replacement.

Flow monitoring. Warning: This feature requires a custom modification of the control unit for monitoring water flow in the piping. It is not available in the standard production model of the control unit. If the pump is running and the flow sensor is not activated, the flow monitoring function will switch off the pump after the configured delay and notify you of the problem. To enable flow monitoring, a hardware modification is required: the 3-pin NTC sensor connector must be replaced with a 4-pin connector, and a 10k pull-up resistor must be added to pin 7 of the ESP chip. The activated state of the sensor indicates water flow. Flow monitoring can then be enabled in the application by setting [flowDelay] to > 0.