central heating

[dgw100]

hi all, i could do with some advice/info on my holstead ace boiler. it doesn't seem to fire up because the system pressure is too high. I cracked a joint and dropped the pressure to about 1.2 bar, but it keeps creeping up and then settling itself at about 2.2 bar when cold. What should the pressure be at and if it persists what could be done to deal with it?

 

[jackthom]

The pressure should be just over 0.5 bar when cold. Any less and it may not ignite.

If the pressure is creeping up when cold it's almost always a leak of mains cold water entering via the filling loop.

 

[assured heating]

The pressure should be just over 0.5 bar when cold. Any less and it may not ignite.

If the pressure is creeping up when cold it's almost always a leak of mains cold water entering via the filling loop.[/quote

The pressure should be between 1 and 1.5 bar not 0.5 most boilers stop working at 0.8 bar the other info is correct