We have a Worcester Greenstar R40HE combi boiler.
The pressure is dropping on an almost daily basis though we cannot find any signs of leaks.
I've tried bleeding the radiators but have several where they are hot (+ water on bleeding) at the top but cold at the bottom.
We have been told we can force the air out by turning off all the radiators, then just turning on 1 at a time. If this is so should the system be running and is there any specific order.
The system was only fitted and commissioned last year.

many thanks.

david Spencer, December 2005

Check the Expansion vessel, remove valve cap and test to see if air comes out of vessel or water. U can try recharging the vessel with a pump. Dee

Dee, January 2006