Today my wife expressed her wish to have a cappuccino, which I gladly started preparing. I use my V 99% of the time to make double ristretto shots, and a few times a year I would switch the steam boiler on to froth some milk.
I have had the machine since February 2020 and it has been seamless by far. Today after the boiler heated up to 127 deg I decided to renew the water inside. I poured out around a litre of hot water, the pump kicked in and refilled it. When it started re-heating all of a sudden the display showed 2.7 bar and the red Alarm sign popped up (as shown in the picture) and I managed to switch off the boiler from the touch screen. Just before the screen went all red I heard some steam leaving the boiler, as I suspect, from the relieve valve.
I waited ten minutes and switched on the steam boiler again. Again, the temperature was raising steadily to 121 deg C when once again the display turned red and I had to switch it off.
My thoughts are (I have not yet opened the machine as it is still very hot) that the thermal probe (PID?) has gone wrong and it did not switch off the heating element letting the temperature to raise above the limit and cause the relieve valve to open. I do remember that quite a few users had to replace their thermal probes so I believe my boiler suffered similar fate.
I will very much appreciate your thoughts. I hope that @DavecUK could advise me on the best way of action.
For the time being I will continue using the machine in brew mode, as I have been doing for almost three years now.
I, however, would like to resolve the issue in due time.
Thank you in advance for your wisdom .