ChrisR - it's a MicroCombi, according to all the documentation.
None of the indicator lights are flickering when it's on, so there's nothing obviously making a circuit.
Even with the CH dial turned right down to its minimum, it's producing some very hot radiators.
thanks for the...
Our Ariston 23 MFFI combi boiler has developed an strange problem, which the CORGI guy couldn't work out, so I thought I'd share it.
A couple of days ago, the boiler started to fire up and then immediately turn off, repeating this cycle until the whole unit was switched off. The CH is off...