Your boiler is currently performing an automatic air-removal process after detecting a change in water pressure, and it will return to normal operation once this cycle finishes.

Filling the product: The diverter valve is moved to the mid-position. The burner and pump are switched off (to fill or drain the product). If the pressure is lower than 0.05 MPa (0.5 bar) and then is above 0.07 MPa (0.7 bar) for longer than 15 seconds, the automatic purging function is activated. The function is activated for 15 minutes.