Hi there,
Limited DIY'er however would appreciate constructive advice.
Recently had hot water cylinder replaced due to leaking indirect connection, after a week or so, instead of boiler (open vented system) stopping at 82oC when fired up, temperature would rise to 99oC....and occasionally cut out with fault code f22 or f25 appearing indicating restriction in system, faulty pump, air in system etc.
Summary: All radiators are working and hot water is ok.
1) Bled all rads and no air came out - clear water.
2) Checked F&E tank and water present above feed pipe and below overflow pipe, however orange scum present on surface of water indicating air in system (?) which I removed.
3) All stop valves within airing cupboard (adjacent to cylinder) open albeit one feeding cylinder was not fully open which was opened.
4) Pressure release valve (?) adjacent to cylinder bled and fresh water squirted out.
5) Bled screw on pump - clear water came out - tested pump for operation by increasing/decreasing speed setting = flow of bleeding increased/decreased accordingly.
6) Switched all trv valves off for 5min then opened each one independently to hopefully push any blockage (?) our of system by water pressure.
Boiler is 3yo and recently serviced - problem has only occurred since hot water tank replaced - any suggestions where next to look?
Thanks in advance,
Scott
Limited DIY'er however would appreciate constructive advice.
Recently had hot water cylinder replaced due to leaking indirect connection, after a week or so, instead of boiler (open vented system) stopping at 82oC when fired up, temperature would rise to 99oC....and occasionally cut out with fault code f22 or f25 appearing indicating restriction in system, faulty pump, air in system etc.
Summary: All radiators are working and hot water is ok.
1) Bled all rads and no air came out - clear water.
2) Checked F&E tank and water present above feed pipe and below overflow pipe, however orange scum present on surface of water indicating air in system (?) which I removed.
3) All stop valves within airing cupboard (adjacent to cylinder) open albeit one feeding cylinder was not fully open which was opened.
4) Pressure release valve (?) adjacent to cylinder bled and fresh water squirted out.
5) Bled screw on pump - clear water came out - tested pump for operation by increasing/decreasing speed setting = flow of bleeding increased/decreased accordingly.
6) Switched all trv valves off for 5min then opened each one independently to hopefully push any blockage (?) our of system by water pressure.
Boiler is 3yo and recently serviced - problem has only occurred since hot water tank replaced - any suggestions where next to look?
Thanks in advance,
Scott