Installer blew in Air Pressure Tube and it worked ok for all of a couple of weeks. New engineer replaced Air Pressure Tube and this worked for all of a few days. Engineer returned and blew in tube and this lasted a couple of hours. Stiil not working, engineer is baffled can anyone help?

Bazzerbeeza, December 2010

Thanks Stuart for your rapid response. Will certainly try this.

bazzerbeeza, December 2010

yeah change the air prssure switch not the tube

stuart, December 2010