Our back boiler keeps tripping out - i.e the overheat stat kicks in and we have to relight the pilot.
We have had it serviced, checked etc and the only advice we have had is that we need a new boiler - but it will cost us at least £2.8k and I still dont know what the root cause problem is
We did convert to a pressurised system with a megaflow and had the overheat stat fitted and it started tripping out then (or maybe was much worse then).
The pressure is not dropping and the last advice we had was that all parts of the boiler were OK.
Might our problem be that the back boiler is downstairs and we have now put the pump in the loft and would this cause cavitation leading to hot air bubbles circulating and tripping out the boiler ?
Any advice really because I dont want to spend nearly £3k