i have now topped it up to 1 bar but there is still no change
There were two valves that released no water or air that seemed to be dry
think the 2 of u aare confusing each othe. if you have a header tank then ur systems pressure is comming from the 'head' of water above. the water naturally takes the easiest route which is down creating ur sys pressure. the other guy right in what he says bout the auto air vent is i think assuming it is a 'sealed' system in what case u would have a auto air vent. without knowing ur sys i could confuse u even further but i take it becuse u said u tried to bleed the pump of air you have acces to it?! therefore not a combi! Turn the t/stat on ur boile right down to 0, but keep all external sources (eg.programmer, c/h t/stat etc calling for heat. this will make the pump run alone without running the risk of itoverheating whilst airlocked up! on the flat side of ur pump there will be a little dial with 3 speed settings on it, u wiil be able to hear the pump running let it run 1st for least 4/5 mins @ speed3, then turn thelitte arm on the dial in between speed 2nd 3. the pump in this position with u controlling it will stop the piump runnig,. this will take a few attempt till u get the feel of it. listen to sound of pump running and sound as u approach speed 2. u will see what i mean. repeat stopping pump then letting run 4/5 mins several times. when it starts to work u will clearly be able to hear the air bubbling back up the expansion pipe! honestly in an open sys propperly locked, this is the only way. may take a wee while but it all the good things do! Beanie(B.G. Engineer)
Turn the t/stat on ur boile right down to 0, but keep all external sources (eg.programmer, c/h t/stat etc calling for heat. this will make the pump run alone without running the risk of itoverheating whilst airlocked up!
If you need to find a tradesperson to get your job done, please try our local search below, or if you are doing it yourself you can find suppliers local to you.
Select the supplier or trade you require, enter your location to begin your search.
Are you a trade or supplier? You can create your listing free at DIYnot Local