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Hey there, I've searched through various threads here and on other forums but can't find any for this model. Going by what I've picked up, the problem is either pressure switch, float switch, air brake, aquastop, pcb or a general blockage somewhere. Had a quick look earlier, managed to...

i drained my heating system to move a radiator. The combi boiler is a glow worm 30cxi. when i came to refill it i found that there is no fill loop, just a blue filling tap, which the manual says is to re-pressurise the system if it drops below 0.7 bar. It then says this tap is not intended...