Valliant ecotec plus 824 boiler. Pressure guage is in red and can't get it to come down. When press the - button, it says 2.1. How can I get this down. Can I tirn my heating on, is it safe?
quite safe that it has safety valve fitted,you can drain out some water via flow or return pipes under boiler fitted with drain out build in ,or from Rads air vent yo 1.2 bar
