my heat exchanger on my non condenser 24cbi is leaking and needs replacing.its only 7 yrs old but cant seem to find any stockists of parts. is it worth fixing and how hard a job is it? what may be the best current direct replacement be?
i have flashing right hand light on the facia. I have changed the flame sensor electrode, and overheat thermostat. pcb was replaced some months ago believed ok. boiler works for 20 mins then locks out. i have discovered everything works fine - hot water and radiators - when the inner cover...