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12.2.10 Automatic water supply management
The controller detects if there is no supply water or alternatively if the flow-rate is too low, by controlling the increase in the
phase current at the electrodes after the opening of the fill electrovalve.
When insufficient supply water is detected, the controller runs the fol lowing sequence:
1. displays the alarm “EF” and activates the alarm relay;
2. opens the remote control switch and closes the fill electrovalve for 10 min;
3. after 10 min, opens the fill electrovalve and closes the remote control switch, and then measures the phase current: If
the current increases, the controller concludes water has returned, and cancels the alarm on the display, deactivates the
alarm relay and returns to normal operation; otherwise, it returns to step 2, awaiting the next check.
