Hi there,
Got an old (10 yrs or so) Glowworm boiler, the flow switch is bust but other than that seems to work ok so I would like to replace the part. Im having terrible trouble sourcing the part, some, but not all suppliers require a 'GC' number which I assume must be found inside since I cant see it anywhere. I would welcome any suggestions, there must be one somewhere!
And of course any reccommendations for a fitter...
Many thanks.