Dear Community
First of all, apologies for writing in English.
I have a Vitodens 300 with hot water tank (sanitary water) of 120L.
Every now and then the boiler doesn't heat it back to the setpoint.
The pump is working, the temperature probe (sensor) is working and I get no error. It simply doesn't activate the pump.
Any tip of what can be preventing it to work? Anything you suggest to check?
Again, no error, no message. Simply the pump is not requested to be activated despite the Actual temperature is much lower than the
Setpoint (e.g. Setpoint = 50 and Actual = 25).
Then, out of a sudden, it works again.
Thanks
Kind regards
/Nairo
