I have an indirect system using a Baxi Solo 60Rs boiler. My problem is that when heating water only the boiler ignites but shuts off after about 1-2 mins. It will reignite again about 5 mins later but again only for a minute or so. Consequently I cannot get enough hot water from the taps, in fact barely any.
If, however I start the CH this has no problem and the boiler will stay on and the rads are supplied no problem.
Any advice where to start?