I have a Procombi boiler and for some weeks now the green light has been flashing intermittently every 0.5 seconds (but working fine). Now however, it is a constant red and fails to work. I suspect this may be an issue with needing to re-pressurise the system (2.3 in the users manual) since the pressure seems low (around 0.3 bar) but I’d like some confirmation of this!Is this something I can sort out easily myself?
nthere should be a flexible hose under the boiler with a tap on it open the tap till you reach 2 bar turn off the tap your boiler should work as normal
Set standing pressure at 1 bar , be careful to high pressure will blow seals
You should have a good working understanding of your system before you do anything. It will be worth your money to find and pay someone to help you. You can ask a lot of questions and do it your self next time. If you have say a munchkin boiler do a google search and find a dealer that installs them. You are dealing with pressure, water and air not a good thing. It is great heat when working properly.
Hi if you look under your boiler you will see a filling loop it is a flexible silver pipe with a valve at each end, it will look like this: www.google .uk/imgres?imgurl=ht... sometimes they only have one valve. all you need to do is turn the valve tap until it is perpendicular (straight) to the pipe , this means it is open, open both, you may hear water running. watch the pressure gauge when it is just above 1 bar turn it off. do not put more than 1.5 bar in as the water needs to expand (about50%) when it gets hot. Now your boiler will work again. NEXT thing to do is look for the cause of your problem. firstly bleed all of the radiators it may just be a build up of air causing the pressure loss. this is simple and can be done with a Radiator bleed key. then check the pressure relief valve, it will be a pipe coming out of the wall behind the boiler, check to see if this is dripping water, if it is: your pressure relief valve will need to be replaced. check all the valves to the radiators you are looking for a very small amount of water from one of these or a sign it has been leaking, ie limescale/staining if you find one that is leaking tighten it up or replace it. the only other option after this is a concealed pipework leak, look for damp patches on your floor or in the ground floor ceiling. leaksalant can be added to a system to remove small leaks but this is a job for a Professional as this can cause damage to the boiler/pump if done wrong. good luck, stay warm.
