I have avokera combi and it over heats, so far we have replaced the Expansion Vessel and the PRV, signeficant improvement but still it overheat. After a couple of days we checked the EV pressure again it was16 PSI but the boiler still overheat. Some suggest that I should clean the flexi pipe, any idea what is the reasonable cost for doing this?

khosrow, February 2013

Which is it vokera compact two in one heat exchanger? If its than undo cold hot inlet out let ,fexi heating in out ,take out heat exchanger clean with sprit of salt remove all filter ,all blocked up no need to put back half ,days job "......

ltd, February 2013