Good Evening, I have the Above Boiler which was serviced a couple of years ago by my next door neighbour ( Corgi regsitered) He trained me in general maintenece of the machine (I have an electronics & Engineering Degree so am a bit handy) and its been fine, its a big old noisy girl but keeps on chugging!
However, recently she letting me down. When we need hot water its running Hot for a minute, cold for a minute and tonight its got worse, more cold, then luke warm, then cold. Its because the burner is kicking in and out, ie not staying on. Different flow rates through the tap don't seem to make a difference, and by going through the fault guides in the user manual if got it down to the thermostat or the control board.
What do you guys think? could it be a simple fix? ( ive tried bleeding the DHW Heat Exchanger but to no avail!!
Forgot to mention. CH side seems fine, radiators are hot & burner clicks in and out as normal
However, recently she letting me down. When we need hot water its running Hot for a minute, cold for a minute and tonight its got worse, more cold, then luke warm, then cold. Its because the burner is kicking in and out, ie not staying on. Different flow rates through the tap don't seem to make a difference, and by going through the fault guides in the user manual if got it down to the thermostat or the control board.
What do you guys think? could it be a simple fix? ( ive tried bleeding the DHW Heat Exchanger but to no avail!!
Forgot to mention. CH side seems fine, radiators are hot & burner clicks in and out as normal