After just over 2 years of excellent continuous service my boiler has stopped working. DHW is fine but on the CH side I get a S.0 status most of the time, even when there is clearly a heat demand, so the radiators remain cold. D40 and 41 both give the same temperature reading, e.g. 67C at the moment, though the return pipe beneath the boiler is cold.
Not sure whether this is relevant or related, but there is a dried up green/black residue in the bottom of the boiler and a similar looking stain down the wall beneath, which first appeared about 3 weeks ago. I haven't been able to see any similar deposits on any of the pipework within the boiler. Everything looks pristine.
Any thoughts anyone?
Not sure whether this is relevant or related, but there is a dried up green/black residue in the bottom of the boiler and a similar looking stain down the wall beneath, which first appeared about 3 weeks ago. I haven't been able to see any similar deposits on any of the pipework within the boiler. Everything looks pristine.
Any thoughts anyone?