vaillant ecoTEC plus boiler fault code - how to fix?
I have ave a vaillant boiler and just now i used the kitchen tap water and there is not hot water. And, the boiler is flashing F.22 and i don't know what this means! and the pressure has dropped to 0.2 and i have read the installation booklet, but it doesn't help me. How to i fix this problem?? thanks
Bal, April 2017
done
