Hi All,
It would seem that unfortunatley I am cursed with one of these boilers, although to be fair, apart from the temp sensor needing cleaning a couple of times, ive not had any problems to date.
Anyway to the issue...
Started boiler on central heating around a month ago, and its been working pretty much fine until this week.
Basically the heating and/or the DHW are not working properly.
Initial problems began with the CH firing and then going off, sometimes it would restart, other times it would just cut out. ( no lock out) but it wouldnt start again after its time delay.
By manually switching it off and on again at the wall or on the boiler, it would start up again, and either keep running or cut out again.
It also has a fault of not switching on on the timer, I mean not even firing. Again, a switch off/on seemed to help.
Another time, it will run and the CH will get hot and work 'fine', but I noticed on occasion that the pressure goes up to nearly 3 bar, and im not sure exactly if it stays just under the relief pressure of if the valve is operating. (think i can hear a sort of clicking when its at this pressure so wondering if that the valve)
It seems to work 'ok' with the DHW, and seems to swicth from Ch to DHW ok.
Boiler is around 7 years old.
Ive pressed the valve in the EX vessel, air came out no water, and although I havnt messured the pressure, the air came out quite well. (comparing to a car tyre being 28ish psi, and the EXV being 14ish)
When cold, the boiler pressure doesnt drop below 1bar, (maybe a tad under sometimes)
Im a car mechanic and general good DIYer, so can hopefully get this fixed myself (unless its gas prob of course)
Ive read loads of posts about this boiler and am aiming towards the flow switches and maybe the EXV, its just that the range of faults make me want to post first for your advice.
many thanks for any suggestions
Wayne
Also - I have the original service instruction book,and while it has a good diagnostic flow chart for the DHW, the one for the CH basically just shows how it works. and due to the seeming big range of faults I have, its difficult to judge what is not working.
It would seem that unfortunatley I am cursed with one of these boilers, although to be fair, apart from the temp sensor needing cleaning a couple of times, ive not had any problems to date.
Anyway to the issue...
Started boiler on central heating around a month ago, and its been working pretty much fine until this week.
Basically the heating and/or the DHW are not working properly.
Initial problems began with the CH firing and then going off, sometimes it would restart, other times it would just cut out. ( no lock out) but it wouldnt start again after its time delay.
By manually switching it off and on again at the wall or on the boiler, it would start up again, and either keep running or cut out again.
It also has a fault of not switching on on the timer, I mean not even firing. Again, a switch off/on seemed to help.
Another time, it will run and the CH will get hot and work 'fine', but I noticed on occasion that the pressure goes up to nearly 3 bar, and im not sure exactly if it stays just under the relief pressure of if the valve is operating. (think i can hear a sort of clicking when its at this pressure so wondering if that the valve)
It seems to work 'ok' with the DHW, and seems to swicth from Ch to DHW ok.
Boiler is around 7 years old.
Ive pressed the valve in the EX vessel, air came out no water, and although I havnt messured the pressure, the air came out quite well. (comparing to a car tyre being 28ish psi, and the EXV being 14ish)
When cold, the boiler pressure doesnt drop below 1bar, (maybe a tad under sometimes)
Im a car mechanic and general good DIYer, so can hopefully get this fixed myself (unless its gas prob of course)
Ive read loads of posts about this boiler and am aiming towards the flow switches and maybe the EXV, its just that the range of faults make me want to post first for your advice.
many thanks for any suggestions
Wayne
Also - I have the original service instruction book,and while it has a good diagnostic flow chart for the DHW, the one for the CH basically just shows how it works. and due to the seeming big range of faults I have, its difficult to judge what is not working.