I have an Alpha boiler and since yesterday it's been exhibiting the following strange behaviour...
We had the central heating on in the evening and it seemed to be working fine. A few hours in and I notice that the boiler seem to come on more often to check radiator water temp before heating it up. I find that normally it would do this every 5mins but now it was doing it every 15 seconds. At this point the radiators became too hot to touch so it was heating them up every time it came on.
We have a digital control, instead of the analogue clock, to control when we want the CH on. I set it to the off position so that the CH should turn of. No luck, the CH was still doing it's 15 second thing. I then go downstairs and turn the thermostat to the 0degrees, same result as before. I then put the boilor in to domestic hot water only mode and still the CH comes on every 15 seconds!
I've tried using the reset function but that doesn't resolve it either. The only way to stop the CH coming on is to turn off its electric supply, which obviously means we don't get domestic hot water either.
So I left it completely off overnight thinking it might have been an over-heating issue. I try it again this morning and shortly after turning on the electric for the boiler the CH kicks in again despite still being disabled in the 3 places described above!
Anyone ever come across this kind of behaviour?
We had the central heating on in the evening and it seemed to be working fine. A few hours in and I notice that the boiler seem to come on more often to check radiator water temp before heating it up. I find that normally it would do this every 5mins but now it was doing it every 15 seconds. At this point the radiators became too hot to touch so it was heating them up every time it came on.
We have a digital control, instead of the analogue clock, to control when we want the CH on. I set it to the off position so that the CH should turn of. No luck, the CH was still doing it's 15 second thing. I then go downstairs and turn the thermostat to the 0degrees, same result as before. I then put the boilor in to domestic hot water only mode and still the CH comes on every 15 seconds!
I've tried using the reset function but that doesn't resolve it either. The only way to stop the CH coming on is to turn off its electric supply, which obviously means we don't get domestic hot water either.
So I left it completely off overnight thinking it might have been an over-heating issue. I try it again this morning and shortly after turning on the electric for the boiler the CH kicks in again despite still being disabled in the 3 places described above!
Anyone ever come across this kind of behaviour?