Hello,
I have a Vaillant boiler and since a few days back I don't have any hot water. First it was a f22 error, the pressure was around 0.7 bar, but I've fixed that now so it's up to 1.8 bar and the error message has disappeared and it's only a green light. The temperature is pending between 40-50 celsius but still no hot water.
Any suggestions what I could do?
Thanks
Henrik