My boiler will only work properly if i release one of the clips of the air box cover so letting air in but when i seal it back up the boiler will keep cutting out nobody i've asked so far has an answer for it. I have replaced the pressure differrential switch.can anybody out there help me please.

R Matthews, December 2008

my boiler seems to not be light ant not heating as a result how do i re light?

PAUL, June 2012