pressure goes up past 3 bar and releif valve lets water out continually but boiler seems to work ok

paul laff, May 2008

hi
difficult to say without looking at it but i would have to say maybe your filling loop is faulty or slightly open if the kids have got to it or maybe even a pet has knocked it.
filling loop is the pipe (usually a flexi pipe) that goes from your main supply to your cold supply to the boiler.
worth a look
gaz

gary, May 2008