by boardy_61 »
Sun Dec 26, 2010 12:57 pm
[quote="htg engineer"]If it's a pressurised system, check system pressure and top-up if necessary.
If not or if system pressure is fine, then the bleed points could be blocked. Turn off both radiator valves, remove bleed nipple and insert a pin into the radiator to clear blockage - replace nipple open valves and bleed as normal.
thankyou for your reply, but im not sure how to check if the pressure is ok, and how to top up if necessary, thankyou.