andrew smith asked ... 2009 fiesta 1388 cc titainum?    |    Eric asked ... Strimmer fuel line?    |    Frank asked ... Working fine. No cold air?    |    c.m.brown asked ... Replace chuck on aeg power drill sb2e 700r?    |    tom dimmock asked ... How can i mend the lid on russell hobbs elec?    |    Click here to ask your question

Pressure keeps building up within the system?

All radiators are bled within the system and are hot, however pressure keeps building up and the only way to reduce the pressure is to let off some water, what is causing the pressure to build up ?
Kathryn James, May 2008
filling loop left open
filling loop passing even though it appears off
holed heat exchanger allowing mains pressure into system

you never advised on boiler but they're the possabilities

iain, May 2008