i have a worcester 24 cdi combi boiler, the red light keeps flashing on the radiator dial, no hot water and the damned thing just keeps clicking and will not fire up ? i have pressed the reset button in the past which has worked, but not anymore ! the engineer has changed the condenser twice, but same problem again.
when you say no hot water you also have no heating too? What is you presser is it at 1 bar ? if yes then i would look at you flow swich,this tell the boiler that there is water in side it and could be blocked, yes i know it show water but check it,
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